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To try to better understand how long a TV should last, we're running 100 TVs through an accelerated longevity test for the next two years. We've just posted our 1-year video update with our latest findings on temporary image retention, burn-in, and more!

Toshiba Fire TV 2020 TV Review

Tested using Methodology v1.6
Review updated Jul 28, 2021 at 01:36 pm
Latest change: Retest Aug 03, 2021 at 10:31 am
Toshiba Fire TV 2020 Picture
6.7
Mixed Usage
Value for price beaten by
: Not at the latest test bench
6.1
Movies
Value for price beaten by
: Not at the latest test bench
7.2
TV Shows
Value for price beaten by
: Not at the latest test bench
7.1
Sports
Value for price beaten by
: Not at the latest test bench
6.9
Video Games
Value for price beaten by
: Not at the latest test bench
6.1
HDR Movies
Value for price beaten by
: Not at the latest test bench
6.7
HDR Gaming
Value for price beaten by
: Not at the latest test bench
6.8
PC Monitor
Value for price beaten by
: Not at the latest test bench
This TV was replaced by the Toshiba C350 Series 2021

The Toshiba Fire TV 2020 is an okay 4k TV and a decent upgrade over its predecessor, the Toshiba Fire TV 2019. Its high contrast ratio and excellent black uniformity mean it's not a bad choice for dark room viewing, and it can deliver an okay gaming experience with its fast response time and low input lag. Unfortunately, its narrow viewing angles make it less ideal for wide seating arrangements, it has low peak brightness in SDR and HDR, and it can't display a wide color gamut. Its color accuracy is also quite bad, but on the bright side, its Fire TV platform is user-friendly and has tons of streaming services available, and the built-in voice control works with other Amazon smart home products.

Our Verdict

6.7 Mixed Usage

The Toshiba Fire TV is okay overall. Although it has a VA panel with a high contrast ratio and excellent black uniformity, it's mediocre for watching movies in SDR or HDR because it doesn't get bright, can't display a wide color gamut, and lacks local dimming. It's decent for watching sports and TV shows as it has good reflection handling, but it doesn't get bright enough to fight glare. It's okay for gaming as it has low input lag and a quick response time, but it doesn't have other gaming features like variable refresh rate support.

Pros
  • High contrast ratio.
  • Fast response time.
  • Good reflection handling.
Cons
  • Low peak brightness in SDR and HDR.
  • Sub-par viewing angles.
  • Poor color accuracy.
6.1 Movies

The Toshiba Fire TV is mediocre for watching movies in dark rooms. Although it has a high contrast ratio and excellent black uniformity, it doesn't have local dimming and it can't remove judder at all. It upscales lower resolution movies well, though, and it doesn't stutter too much in low frame rate content.

Pros
  • High contrast ratio.
  • Excellent black uniformity.
Cons
  • Low peak brightness in SDR and HDR.
  • Sub-par viewing angles.
7.2 TV Shows

The Toshiba Fire TV is decent for watching TV shows during the day. It upscales lower resolution content well, there are tons of streaming services available, and there's no risk of permanent burn-in if you leave it on the same news channel all day. Unfortunately, even though it has good reflection handling, it doesn't get very bright, so visibility can be an issue in well-lit rooms. Additionally, its narrow viewing angles make it less suitable for those with wide seating areas.

Pros
  • No risk of permanent burn-in.
  • Good reflection handling.
Cons
  • Low peak brightness in SDR and HDR.
  • Sub-par viewing angles.
7.1 Sports

The Toshiba Fire TV is decent for watching sports in a bright room. It has a fast response time, it upscales lower resolution content from cable boxes well, and there isn't too much dirty screen effect. That said, its low peak brightness can make it hard to see in bright settings, and its narrow viewing angles aren't ideal for watching with a big group of people.

Pros
  • Fast response time.
  • Good reflection handling.
Cons
  • Low peak brightness in SDR and HDR.
  • Sub-par viewing angles.
6.9 Video Games

The Toshiba Fire TV is okay for gaming. It has low input lag, fast response time, and it has great dark room performance due to its high contrast ratio and excellent black uniformity. Sadly, the refresh rate is limited to 60Hz and it doesn't support any advanced gaming features like variable refresh rate technology.

Pros
  • High contrast ratio.
  • Fast response time.
  • Low input lag.
  • Excellent black uniformity.
Cons
  • Low peak brightness in SDR and HDR.
  • Sub-par viewing angles.
  • No VRR support.
6.1 HDR Movies

The Toshiba Fire TV is mediocre for watching movies in HDR. It performs very well in dark rooms thanks to its high contrast ratio and excellent black uniformity; however, it lacks local dimming, it can't display a wide color gamut, and its low HDR peak brightness isn't enough to make highlights stand out. Color accuracy is pretty bad too, and it can't remove judder at all.

Pros
  • High contrast ratio.
  • Excellent black uniformity.
Cons
  • Low peak brightness in SDR and HDR.
  • Sub-par viewing angles.
6.7 HDR Gaming

The Toshiba Fire TV is okay for gaming in HDR. Its response time is great, and it has a high contrast ratio and excellent black uniformity, making it a good choice for gaming in the dark. Unfortunately, it can't really deliver a satisfying HDR experience due to the lack of local dimming and wide color gamut, and it doesn't get bright enough to make highlights pop. Also, its input lag is a lot higher when playing in HDR.

Pros
  • High contrast ratio.
  • Fast response time.
  • Low input lag.
  • Excellent black uniformity.
Cons
  • Low peak brightness in SDR and HDR.
  • Sub-par viewing angles.
  • No VRR support.
6.8 PC Monitor

The Toshiba Fire TV is okay for use as a PC monitor. It has a fast response time, and its VA panel is immune to permanent burn-in. However, it doesn't support chroma 4:4:4 and it has narrow viewing angles, so the image looks washed out at the edges if you sit too close. It has good reflection handling but doesn't get bright enough to fight a ton of glare.

Pros
  • Low input lag.
  • No risk of permanent burn-in.
  • Good reflection handling.
Cons
  • Low peak brightness in SDR and HDR.
  • Sub-par viewing angles.
  • Can't display chroma 4:4:4.
  • 6.7 Mixed Usage
  • 6.1 Movies
  • 7.2 TV Shows
  • 7.1 Sports
  • 6.9 Video Games
  • 6.1 HDR Movies
  • 6.7 HDR Gaming
  • 6.8 PC Monitor
  1. Updated Aug 03, 2021: Added the real content local dimming videos.
  2. Updated Jul 28, 2021: Updated review for accuracy and clarity.
  3. Updated Mar 03, 2021: Converted to Test Bench 1.6.
  4. Updated Aug 21, 2020: Review published.
  5. Updated Aug 14, 2020: Early access published.
  6. Updated Jul 23, 2020: Our testers have started testing this product.
  7. Updated Jul 23, 2020: The product has arrived in our lab, and our testers will start evaluating it soon.
  8. Updated Jul 19, 2020: We've purchased the product and are waiting for it to arrive in our lab.

Differences Between Sizes And Variants

We tested the 50 inch Toshiba Fire TV (50LF621U21), and we expect our review to be valid for the 43 inch (43LF621U21) and 55 inch (55LF621U21) models as well. It's only available in North America, and the model codes are slightly different between the U.S. and Canada. There's also a 32 inch model available (32LF221U21), but it has a 720p resolution and should perform differently from the 4k model we tested.

Size Resolution United States Canada
32" 720p 32LF221U21  32LF221C21
43" 4k  43LF621U21 43LF621C21
50" 4k 50LF621U21 50LF621C21
55" 4k 55LF621U21 55LF621C21

 

If someone comes across a different type of panel or if their Toshiba 50LF621U21 doesn't correspond to our review, let us know and we will update the review. Note that some tests like the gray uniformity may vary between individual units.

Our unit of the Toshiba 50LF621U21 was manufactured in May 2020; you can see the label here.

Compared To Other TVs

The Toshiba Fire TV Edition is an okay budget TV for most uses. Compared to other TVs in its price range, it's one of the better options for watching TV shows because it has good reflection handling. However, there are better options for watching movies or for use as a PC monitor, like the TCL 4 Series 2019.

For more options, check out our recommendations for the best TVs under $300, the best budget TVs, and the best 40-43 inch TVs.

Toshiba C350 Series 2021
43" 50" 55" 65" 75"

The Toshiba C350 Fire TV 2021 replaces the Toshiba Fire TV 2020 and the units we tested have different panel types. The 55 inch version of the 2021 model has an IPS-like panel with wider viewing angles than the 2020 model, which has a better contrast. However, it's possible some of the sizes of the 2021 model also have VA panels. Other than that, the 2021 model is worse in a few ways because it doesn't get as bright and it has issues upscaling lower-resolution content, but it does a better job at displaying native 4k content.

LG UN7300
43" 49" 50" 55" 65" 70" 75"

The LG UN7300 is marginally better than the Toshiba Fire TV 2020. The LG is generally better if you want to use the TV as a PC monitor, as it has wider viewing angles, better reflection handling, and better color accuracy. Also, it has lower input lag and it can display proper chroma 4:4:4. The Toshiba is better for watching movies due to its higher contrast ratio and better black uniformity.

TCL 4 Series 2019
43" 49" 50" 55" 65" 75"

The TCL 4 Series 2019 is slightly better than the Toshiba Fire TV 2020. The TCL has a higher contrast ratio, better color accuracy, and lower input lag. It also has better gradient handling and can display chroma 4:4:4 properly. The Toshiba gets much brighter, though, and it has better reflection handling.

Toshiba Fire TV 2019
43" 50" 55"

Overall, the Toshiba Fire TV 2020 is a decent upgrade from its predecessor, the Toshiba Fire TV 2019. The 2020 has a higher contrast ratio, better black uniformity, and its response time is significantly faster. Input lag has improved a lot as well but color accuracy is worse, and although it doesn't get as bright in SDR, it gets brighter in HDR.

Samsung NU6900
43" 50" 55" 65" 75"

Overall, the Samsung NU6900 is marginally better than the Toshiba Fire TV 2020. The Samsung has a much higher contrast ratio to deliver deep blacks, it has better screen uniformity and color accuracy, and its gradient handling is much better, so there's less banding. On the other hand, the Toshiba has faster response time, lower input lag, and it gets brighter in HDR.

LG UN6950
43" 50" 55" 60" 65" 75"

The LG UN6950 is slightly better than the Toshiba Fire TV 2020. The LG has much better color accuracy, it has a lower input lag, it has better gradient handling, and it removes 24p judder. On the other side, the Toshiba handles reflections better, it gets slightly brighter, and it has a slightly quicker response time.

Hisense H6570G
43" 50" 55" 65" 70" 75" 85"

The Toshiba Fire TV 2020 is a bit better than the Hisense H6570G. The Toshiba gets brighter, has a quicker response time, and has much lower input lag. The built-in Fire TV interface is also easier to use, while the Android TV on the Hisense has more apps available to download. The Hisense has a better contrast ratio and much better out-of-the-box accuracy, but this may vary between units.

TCL 3 Series 2020
32"

The Toshiba Fire TV 2020 is much better than the TCL 3 Series 2020. The Toshiba is a 4k TV, it has better uniformity, a quicker response time, lower input lag, and it supports HDR. However, the TCL has wider viewing angles.

TCL 4 Series/S435 2020
43" 50" 55" 65" 75" 85"

The Toshiba Fire TV 2020 is slightly better than the TCL 4 Series/S435 2020. The Toshiba gets much brighter, has better black uniformity, slightly better reflection handling, and quicker response time. However, the TCL has better gradient handling, displays chroma 4:4:4, and removes 24p judder from native sources.

Hisense H6510G
50" 55" 65" 75" 85"

The Toshiba Fire TV 2020 and the Hisense H6510G are very similar TVs. The Toshiba gets brighter, has slightly better reflection handling, has a much quicker response time, and much lower input lag. However, the Hisense has much better gradient handling, displays native 4k content perfectly, and has a better contrast ratio.

Hisense R6090G
43" 50" 55" 65"

The Hisense R6090G is better than the Toshiba Fire TV 2020. The Hisense has better contrast, better out-of-the-box color accuracy, displays native 4k content perfectly, and has lower input lag. However, the Toshiba gets brighter in HDR and has a quicker response time.

Amazon Fire TV Omni Series
43" 50" 55" 65" 75"

The Amazon Fire TV Omni Series is better than the Toshiba Fire TV 2020 overall, but the Toshiba might be a better choice for some people. The Amazon can remove judder from any source, and it's brighter. The Toshiba has better black uniformity and much better accuracy after calibration, as it has a full calibration system compared with the simple white balance calibration on the Omni Series. The Toshiba also has a faster response time and slightly better reflection handling.

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Test Results

perceptual testing image
Design
Design
Style
Curved No

Compared to its predecessor, the Toshiba 50LF621U21 is almost identical. The new stand has thinner feet, giving the TV a more modern look. The borders are slightly thinner, but they still protrude from the screen.

Design
Stand

The feet are thinner and are positioned wider apart compared to the Toshiba Fire TV 2019, so the stand requires a bigger table. The feet are now metal instead of plastic, and they support the TV well; there's very little wobble.

Footprint of the 50 inch model: 42.1" x 11.5"

Design
Back
Wall Mount VESA 200x300

The back of the TV is mostly made out of metal, but the lower portion is plastic, including the area surrounding the inputs. Unfortunately, there's no built-in cable management.

Design
Borders
Borders 0.51" (1.3 cm)
Design
Thickness
Max Thickness 3.23" (8.2 cm)
6.5
Design
Build Quality

The build quality is okay. It's very similar to the Toshiba Fire TV 2019, except that the feet are now metal instead of plastic. There aren't any obvious issues with the construction, and the TV doesn't wobble much.

Picture Quality
8.4
Picture Quality
Contrast
Native Contrast
4,026 : 1
Contrast with local dimming
N/A

The Toshiba 50LF621U21 has an impressive contrast ratio. It's a bit lower than other TVs with VA panels, but it's still high enough to display deep blacks. It doesn't have a local dimming feature to improve it and keep in mind that contrast can vary between units.

6.2
Picture Quality
SDR Brightness
Real Scene Peak Brightness
270 cd/m²
Peak 2% Window
242 cd/m²
Peak 10% Window
267 cd/m²
Peak 25% Window
267 cd/m²
Peak 50% Window
266 cd/m²
Peak 100% Window
266 cd/m²
Sustained 2% Window
242 cd/m²
Sustained 10% Window
267 cd/m²
Sustained 25% Window
267 cd/m²
Sustained 50% Window
266 cd/m²
Sustained 100% Window
266 cd/m²
Automatic Brightness Limiting (ABL)
0.007

The SDR peak brightness is mediocre. Visibility should be fine in a dark to moderately-lit room, but it isn't bright enough to overcome glare in well-lit rooms. The brightness is fairly consistent across different content, except for the slight dimming in the 2% window, which shouldn't be noticeable.

We measured the SDR peak brightness after calibration, using the 'Movie' Picture Mode. Backlight was set to max, Contrast was set to '75', and Mid Luminance Gamma was set to '+1'. Dynamic Contrast and Dynamic Backlight were left disabled as they made the TV dimmer in SDR when using the 'Movie' Picture Mode.

If you don't mind losing image accuracy, you can get a brighter image by setting the Picture Mode to 'Standard', with Backlight set to max, Contrast set to '75', and with Dynamic Contrast and Dynamic Backlight set to 'High'. With these settings, we were able to achieve a peak brightness of 384 cd/m² in the 10% window.

0
Picture Quality
Local Dimming
Local Dimming
No
Backlight
Edge

Update 08/03/2021: Added the real content local dimming videos.

The Toshiba 50LF621U21 doesn't have a local dimming feature. The video is for reference only, so you can see how backlight on this display performs and compare it to a similar product with local dimming.

0
Picture Quality
Local Dimming In Game Mode
Local Dimming
No
Backlight
Edge

Update 08/03/2021: Added the real content local dimming videos.

Once again, there's no local dimming feature. The video is for reference only, so you can see how backlight on this display performs and compare it to a similar product with local dimming.

5.7
Picture Quality
HDR Brightness
Real Scene Highlight
348 cd/m²
Peak 2% Window
330 cd/m²
Peak 10% Window
373 cd/m²
Peak 25% Window
373 cd/m²
Peak 50% Window
372 cd/m²
Peak 100% Window
372 cd/m²
Sustained 2% Window
330 cd/m²
Sustained 10% Window
373 cd/m²
Sustained 25% Window
373 cd/m²
Sustained 50% Window
372 cd/m²
Sustained 100% Window
371 cd/m²
Automatic Brightness Limiting (ABL)
0.008

The Toshiba Fire TV has disappointing HDR peak brightness. It gets brighter than in SDR, but it's still not enough to bring out highlights. Its brightness is consistent across different content, except small highlights are a bit more dim. The EOTF follows the target somewhat well, but most scenes appear over-brightened.

We tested HDR brightness in the 'Movie' Picture Mode with the Brightness at its max and Dynamic Backlight and Dynamic Contrast each disabled. If you find it too dim and want a brighter image, use the 'Standard' Picture Mode with the Brightness and Contrast at their max and Dynamic Contrast and Dynamic Backlight each on 'High'. It over-brightens some most scenes, as you can see in this EOTF, but it doesn't actually increase the peak brightness.

5.6
Picture Quality
HDR Brightness In Game Mode
Real Scene Highlight
336 cd/m²
Peak 2% Window
324 cd/m²
Peak 10% Window
338 cd/m²
Peak 25% Window
337 cd/m²
Peak 50% Window
336 cd/m²
Peak 100% Window
336 cd/m²
Sustained 2% Window
323 cd/m²
Sustained 10% Window
338 cd/m²
Sustained 25% Window
337 cd/m²
Sustained 50% Window
336 cd/m²
Sustained 100% Window
335 cd/m²
Automatic Brightness Limiting (ABL)
0.003

The HDR brightness in Game Mode is also disappointing. It's a bit less brightness than outside of Game Mode, but there's no visible difference. Once again, it fails to make highlights stand out, and the EOTF looks similar as most scenes are a bit over-brightened.

We tested it in the 'Game' Picture Mode with the Backlight at its max, Color Temperature set to 'Warm 2' and all other image processing disabled. Use the same settings as outside of Game Mode if you want brighter scenes.

6.9
Picture Quality
Gray Uniformity
50% Std. Dev.
5.339%
50% DSE
0.191%
5% Std. Dev.
1.423%
5% DSE
0.103%

The gray uniformity is okay, but this can vary. There's vignetting and a bit of dirty screen effect at the center, which could get distracting during sports. Uniformity is better in near-dark scenes, but there's still some visible clouding throughout the screen.

8.6
Picture Quality
Black Uniformity
Native Std. Dev.
0.730%
Std. Dev. w/ L.D.
N/A

The Toshiba 50LF621U21 has excellent black uniformity. There's clouding throughout the screen, but it's faint and isn't noticeable in normal content. However, there's no local dimming feature to improve it. Keep in mind that uniformity can vary between units.

5.5
Picture Quality
Viewing Angle
Color Washout
27°
Color Shift
54°
Brightness Loss
28°
Black Level Raise
13°
Gamma Shift
14°

Like most VA panel TVs, the viewing angles are sub-par. This makes the image look washed out when viewed from the side, making it less ideal for large rooms or wide seating areas. If you need wide viewing angles, the 55 inch model of the Toshiba C350 Fire TV 2021 we tested has an IPS-like panel.

Note that the flickering in the video is due to a combination of the backlight's flicker and the camera, and isn't visible in person.

7.5
Picture Quality
Reflections
Screen Finish
Semi-gloss
Total Reflections
5.1%
Indirect Reflections
0.7%
Calculated Direct Reflections
4.4%

The reflection handling is good. It handles ambient light quite well but struggles a bit with direct reflections, so it's best to avoid placing the TV opposite bright light sources.

3.9
Picture Quality
Pre Calibration
White Balance dE
7.07
Color dE
4.56
Gamma
2.11
Color Temperature
7,533 K
Picture Mode
Movie
Color Temp Setting
Warm
Gamma Setting
0

Before calibration, accuracy is bad, but this can vary between individual units. Most colors are noticeably inaccurate, white balance is very off, and the color temperature is much cooler than our 6500K target despite being set to 'Warm'. Gamma doesn't really follow the target, causing most scenes to appear brighter than they should. If you want a TV with much better out-of-the-box accuracy, check out the Hisense H6570G.

8.8
Picture Quality
Post Calibration
White Balance dE
0.82
Color dE
2.11
Gamma
2.15
Color Temperature
6,774 K
White Balance Calibration
1 point
Color Calibration
No

After calibration, color accuracy is excellent. There are still some color inaccuracies with blues, reds, and magentas, but white balance is almost perfect, and the color temperature is much closer to our target. Gamma is better, although some scenes are still too bright. The 'Natural' Picture Mode has a 2-point expert calibration mode; however, any changes made in this mode are discarded as soon as you leave the settings menu.

You can see our recommended settings here.

8.0
Picture Quality
480p Input

480p content looks great, but it has the same issue as the Toshiba Fire TV 2019. The image is stretched horizontally and slightly cropped a bit due to vertical overscan. It's likely a bug that might get fixed via a firmware update.

8.0
Picture Quality
720p Input

720p content, like from a cable box, is upscaled well and without any upscaling artifacts.

9.0
Picture Quality
1080p Input

Upscaling of 1080p content looks outstanding and there are no obvious issues.

9.5
Picture Quality
4k Input

Native 4k content looks amazing; however, there's some sub-pixel dithering that's causing a visible crosshatching effect. It's slightly different from the way that the Toshiba Fire TV 2019 performs, as only the blue sub-pixels are dimming this time. If you want something that displays native 4k content perfectly, check out the Hisense H6510G.

0
Picture Quality
8k Input

The Toshiba Amazon Fire TV can't display an 8k signal.

Picture Quality
Pixels
Type LED
Sub-Type
VA

This TV uses a BGR sub-pixel layout. It doesn't affect picture quality, but it can affect text clarity when using the TV as a PC monitor. You can read about it here. Unlike the Toshiba Fire TV 2019, only the blue sub-pixels are dimming.

7.3
Picture Quality
Color Gamut
Wide Color Gamut
No
DCI P3 xy
80.75%
DCI P3 uv
87.21%
Rec 2020 xy
58.65%
Rec 2020 uv
66.08%

The Toshiba 50LF621U21 has a decent color gamut. However, it's not good enough to be considered a wide color gamut for HDR content according to our testing standards, but it's close to our threshold. It has great coverage of the DCI P3 color space used by most content, but it has limited coverage of the wider Rec. 2020.

6.7
Picture Quality
Color Volume
Normalized DCI P3 Coverage ITP
75.7%
10,000 cd/m² DCI P3 Coverage ITP
25.9%
Normalized Rec 2020 Coverage ITP
58.4%
10,000 cd/m² Rec 2020 Coverage ITP
19.9%

The color volume is okay. It has difficulty displaying bright colors and is limited by the lack of a wide color gamut.

6.1
Picture Quality
Gradient
Color Depth
10 Bit
Red (Std. Dev.)
0.192
Green (Std. Dev.)
0.195
Blue (Std. Dev.)
0.201
Gray (Std. Dev.)
0.149

The Toshiba 50LF621U21 has mediocre gradient handling, and it's much worse than most TVs we've tested. There's banding in all colors, most noticeably in the greens and grays. The Debanding Filter setting can smooth out most of it if you set it to 'Medium' or 'High'; however, it can cause the loss of fine details in some scenes. If you prefer a similar TV with much better gradient handling, then check out the TCL 4 Series/S435 2020.

10
Picture Quality
Temporary Image Retention
IR after 0 min recovery
0.00%
IR after 2 min recovery
0.00%
IR after 4 min recovery
0.00%
IR after 6 min recovery
0.00%
IR after 8 min recovery
0.00%
IR after 10 min recovery
0.00%

There are no signs of temporary image retention on this TV after displaying a high-contrast static image, but this can vary between units.

10
Picture Quality
Permanent Burn-In Risk
Permanent Burn-In Risk
No

We don't expect VA panels to experience permanent image retention, as the VA panel in our long-term test appears immune.

Motion
8.0
Motion
Response Time
80% Response Time
4.8 ms
100% Response Time
12.7 ms

The Toshiba 50LF621U21 has a great response time, resulting in clear motion with only a short blur trail behind fast-moving objects. However, the slight overshoot and slow dark scene transitions can cause some motion artifacts like black smearing in dark scenes.

3.1
Motion
Flicker-Free
Flicker-Free
No
PWM Dimming Frequency
220 Hz

The backlight is flicker-free when it's set to maximum. Below maximum, it uses pulse width modulation to dim the backlight and always flickers at 220Hz. Since the flicker frequency isn't a multiple of 60, it can result in image duplication. If you're bothered by the flickering and want a flicker-free TV, check out the Sony X750H.

4.3
Motion
Black Frame Insertion (BFI)
Optional BFI
No
Min Flicker For 60 fps
220 Hz
60Hz For 60 fps
No
120Hz For 120 fps
N/A
Min Flicker for 60 fps in Game Mode
220 Hz

The Amazon TV doesn't have an optional black frame insertion feature. The backlight always flickers at 220Hz when the brightness is set below maximum.

Motion
Motion Interpolation
Motion Interpolation (30 fps)
No
Motion Interpolation (60 fps)
No

Unlike its predecessor, the Toshiba 50LF621U21 doesn't have a motion interpolation feature.

7.3
Motion
Stutter
Frame Hold Time @ 24 fps
29.0 ms
Frame Hold Time @ 60 fps
4.0 ms

Due to the TV's fast response time, lower frame rate content like movies can appear to stutter, and there's no way to reduce the stutter.

0
Motion
24p Judder
Judder-Free 24p
No
Judder-Free 24p via 60p
No
Judder-Free 24p via 60i
No
Judder-Free 24p via Native Apps
No

This TV can't remove judder from any source. If you need a TV that can remove judder, check out the LG UN7300.

0
Motion
Variable Refresh Rate
Native Refresh Rate
60 Hz
Variable Refresh Rate
No
HDMI Forum VRR
No
FreeSync
No
G-SYNC Compatible
No
4k VRR Maximum
N/A
4k VRR Minimum
No VRR support
1080p VRR Maximum
N/A
1080p VRR Minimum
No VRR support
1440p VRR Maximum
N/A
1440p VRR Minimum
No VRR support
VRR Supported Connectors
No VRR support

Unfortunately, the Toshiba 50LF621U21 doesn't support any variable refresh rate technology to reduce screen tearing when gaming.

Inputs
9.1
Inputs
Input Lag
1080p @ 60Hz
10.9 ms
1080p @ 60Hz Outside Game Mode
68.5 ms
1440p @ 60Hz
11.1 ms
4k @ 60Hz
10.8 ms
4k @ 60Hz + 10-Bit HDR
36.3 ms
4k @ 60Hz @ 4:4:4
68.0 ms
4k @ 60Hz Outside Game Mode
68.2 ms
4k @ 60Hz With Interpolation
N/A
8k @ 60Hz
N/A
1080p @ 120Hz
N/A
1440p @ 120Hz
N/A
4k @ 120Hz
N/A
1080p with Variable Refresh Rate
N/A
1440p with VRR
N/A
4k with VRR
N/A
8k with VRR
N/A

The Toshiba 50LF621U21's input lag is very low, a significant upgrade from the Toshiba Fire TV 2019. While we were able to measure the input lag at 4k @ 60Hz with chroma 4:4:4, the TV can't actually display chroma 4:4:4 properly. Input lag is also really high in 'PC' mode, so it's better to use the TV in 'Game' mode to get low input lag. If input lag is important to you, look into the LG UN6950.

4.2
Inputs
Supported Resolutions
Resolution 4k
1080p @ 60Hz @ 4:4:4
No
1080p @ 120Hz
No
1440p @ 60Hz
Yes (forced resolution required)
1440p @ 120Hz
No
4k @ 60Hz
Yes
4k @ 60Hz @ 4:4:4
No
4k @ 120Hz
No
8k @ 30Hz or 24Hz
No
8k @ 60Hz
No

This TV supports most common resolutions at 60Hz, but it can't display proper chroma 4:4:4 at all, making it less ideal for use as a PC monitor. If you need the full bandwidth of HDMI 2.0, set the HDMI Input Mode to 'Mode 2' for the port in use. If you need a TV that can display proper chroma 4:4:4, check out the Samsung TU7000.

Inputs
Advanced Console Compatibility
Auto Low Latency Mode (ALLM)
No
PS5, 4k @ 120Hz + HDR
No
PS5, 4k @ 120Hz
No
PS5, 4k @ 60Hz + HDR
Yes
PS5, 1440p @ 120Hz
No
PS5, 1080p @ 120Hz
No
PS5, Variable Refresh Rate
No
Xbox Series X, 4k @ 120Hz + HDR
No
Xbox Series X, 4k @ 120Hz
No
Xbox Series X, 4k @ 60Hz + HDR
Yes
Xbox Series X, 1440p @ 120Hz
No
Xbox Series X, 1080p @ 120Hz
No
Xbox Series X, Variable Refresh Rate
No

As this TV is limited to HDMI 2.0, you won't be able to take advantage of the HDMI 2.1 capabilities of the PS5 or Xbox Series X. It seems that the Xbox detects Auto Low Latency Mode (ALLM) support, but it doesn't switch into Game Mode, and we have no way of testing to know if it's working or not.

Inputs
Inputs Specifications
HDR10
Yes
HDR10+
No
Dolby Vision
Yes
HLG
Yes
HDMI 2.0 Full Bandwidth
Yes (HDMI 1,2,3)
HDMI 2.1 Class Bandwidth
No
CEC Yes
HDCP 2.2 Yes (HDMI 1,2,3)
USB 3.0
No
Variable Analog Audio Out Yes
Wi-Fi Support Yes (2.4 GHz, 5 GHz)
Inputs
Input Photos
Inputs
Total Inputs
HDMI 3
USB 1
Digital Optical Audio Out 1
Analog Audio Out 3.5mm 1
Analog Audio Out RCA 0
Component In 0
Composite In 1
Tuner (Cable/Ant) 1
Ethernet 1
DisplayPort 0
IR In 0
SD/SDHC 0
Inputs
Audio Passthrough
ARC
Yes (HDMI 1)
eARC support
Yes
Dolby Atmos via TrueHD via eARC
Yes
DTS:X via DTS-HD MA via eARC
Yes
5.1 Dolby Digital via ARC
Yes
5.1 DTS via ARC
Yes
5.1 Dolby Digital via Optical
Yes
5.1 DTS via Optical
Yes

New on the Toshiba 2020 Fire TV Edition is eARC support. This lets you send high-quality audio like Dolby Atmos via TrueHD and DTS:X via DTS-HD MA over an HDMI connection.

Sound Quality
6.6
Sound Quality
Frequency Response
Low-Frequency Extension
84.76 Hz
Std. Dev. @ 70
3.79 dB
Std. Dev. @ 80
4.00 dB
Std. Dev. @ Max
6.12 dB
Max
87.0 dB SPL
Dynamic Range Compression
4.17 dB

The frequency response is okay. Dialogue sounds reasonably clear and it gets decently loud. However, it doesn't have a lot of bass and it produces some compression artifacts when playing at max volume.

6.3
Sound Quality
Distortion
Weighted THD @ 80
0.317
Weighted THD @ Max
0.499
IMD @ 80
5.99%
IMD @ Max
25.96%

This TV has mediocre distortion performance. The amount of distortion at moderate volume levels is reasonable, but it increases significantly when playing near max volume. That said, not everyone may hear it, and depends on the content.

Smart Features
7.5
Smart Features
Interface
Smart OS Fire TV
Version 6
Ease of Use
Easy
Smoothness
Very Smooth
Time Taken to Select YouTube
4 s
Time Taken to Change Backlight
4 s
Advanced Options
Some

The Fire TV platform has a clean interface that's easy to use. It runs very smoothly, except for a bug that can sometimes cause the highlighted selection to skip when browsing, so instead of moving to the next item on the screen, it would jump to the one after.

0
Smart Features
Ad-Free
Ads
Yes
Opt-out
No
Suggested Content in Home
Yes
Opt-out of Suggested Content
No

There are ads and suggested content on the home page. Unfortunately, they can't be disabled.

8.0
Smart Features
Apps and Features
App Selection
Great
App Smoothness
Average
Cast Capable
Yes
USB Drive Playback
Yes
USB Drive HDR Playback
Yes
HDR in Netflix
Yes
HDR in YouTube
Yes

Amazon's Fire TV app store has a large selection of streaming services and apps for download. The TV can play content directly from a USB thumb drive, but just like native apps like Netflix and YouTube, it uses interlaced scanning instead of a progressive scan. This can result in some motion artifacts known as 'combing' in fast-moving scenes.

8.0
Smart Features
Remote
Size
Small
Voice Control
Many Features
CEC Menu Control
Yes
Other Smart Features
No
Remote App Amazon Alexa

The Toshiba 50LF621U21 comes with a redesigned remote compared to the Toshiba Fire TV 2019. The buttons are now all below the directional pad and there are two new buttons for the settings and to change inputs. It has a built-in mic for voice control, and you can ask it to change inputs, open apps, or search for specific content, but you can't change settings. As expected, the Amazon Alexa feature can also connect with and control other compatible devices.

Smart Features
TV Controls

There's a single button located on the lower left side of the TV. It only allows you to turn the TV On/Off and change the input source.

Smart Features
In The Box

  • User guide
  • Remote control
  • 2x AAA batteries

Smart Features
Misc
Power Consumption 63 W
Power Consumption (Max) 120 W
Firmware Fire OS 7.2.1.3 (PS7213/1462)