TCL QM751G vs QM7K

Which TV Is Better?

Products

TCL QM751G
TCL QM7K

Tested using Methodology v2.0.1

Updated Jul 28, 2025 02:45 PM

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BestBuy.com

Tested using Methodology v2.0.1

Updated Nov 20, 2025 01:54 PM

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BestBuy.com
  1. Recommended in 22 articles:
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  5. 19

Our Verdict

TCL QM751G

TCL QM7K

The TCL QM751G and the TCL QM7K are similar TVs, although the newer QM7K provides slightly better image quality due to its vastly improved contrast ratio. Still, the QM751G is brighter in HDR, sometimes delivering a more impactful HDR experience depending on the scene. While its contrast isn't as good overall, its black levels are comparable due to its slightly faster and more precise local dimming solution. It's also a bit more colorful than its successor. Gamers will appreciate the QM7K's slightly faster pixel transitions and 288Hz support at 1080p.

4 

Variants

  • 55QM751G (55")
  • 65QM751G (65")
  • 75QM751G (75")
  • 85QM751G (85")
  • 98QM751G (98")
  • 55QM7K (55")
  • 65QM7K (65")
  • 75QM7K (75")
  • 85QM7K (85")
  • 98QM7K (98")

Check Price

55"
55QM751G
Amazon.com

Main Differences for
Mixed Usage

Threshold 

0.10

Mixed Usage 

7.8
7.8

HDR Brightness 
 

8.1
7.4

Contrast 
 

8.2
9.4

Black Uniformity 
 

9.5
7.5

Full Comparison

Brightness

HDR Brightness 
 

8.1
7.4

HDR Hallway Photo  

HDR Cityscape Photo  

HDR Landscape Photo  

Hallway Lights (~1950 cd/m²) 
 

828 cd/m²
542 cd/m²

Yellow Skyscraper (~700 cd/m²) 
 

397 cd/m²
302 cd/m²

Landscape Pool (~300 cd/m²) 
 

299 cd/m²
286 cd/m²

Peak 2% Window 
 

1,315 cd/m²
1,312 cd/m²

Peak 10% Window 
 

1,555 cd/m²
1,731 cd/m²

Peak 25% Window 
 

1,449 cd/m²
1,408 cd/m²

Peak 50% Window 
 

899 cd/m²
854 cd/m²

Peak 100% Window 
 

564 cd/m²
518 cd/m²

Sustained 2% Window 
 

1,115 cd/m²
940 cd/m²

Sustained 10% Window 
 

1,527 cd/m²
1,637 cd/m²

Sustained 25% Window 
 

1,428 cd/m²
1,383 cd/m²

Sustained 50% Window 
 

897 cd/m²
852 cd/m²

Sustained 100% Window 
 

564 cd/m²
516 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.052
0.059
Show Text 

HDR Brightness In Game Mode 
 

8.0
7.7

HDR Hallway Photo  

HDR Cityscape Photo  

HDR Landscape Photo  

Hallway Lights (~1950 cd/m²) 
 

796 cd/m²
596 cd/m²

Yellow Skyscraper (~700 cd/m²) 
 

400 cd/m²
377 cd/m²

Landscape Pool (~300 cd/m²) 
 

293 cd/m²
361 cd/m²

Peak 2% Window 
 

1,297 cd/m²
1,320 cd/m²

Peak 10% Window 
 

1,466 cd/m²
1,783 cd/m²

Peak 25% Window 
 

1,378 cd/m²
1,457 cd/m²

Peak 50% Window 
 

862 cd/m²
887 cd/m²

Peak 100% Window 
 

543 cd/m²
541 cd/m²

Sustained 2% Window 
 

1,098 cd/m²
954 cd/m²

Sustained 10% Window 
 

1,443 cd/m²
1,677 cd/m²

Sustained 25% Window 
 

1,364 cd/m²
1,440 cd/m²

Sustained 50% Window 
 

860 cd/m²
885 cd/m²

Sustained 100% Window 
 

542 cd/m²
540 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.052
0.058
Show Text 

SDR Brightness 
 

8.6
8.6

Real Scene Peak Brightness 
 

604 cd/m²
600 cd/m²

Peak 2% Window 
 

1,222 cd/m²
1,233 cd/m²

Peak 10% Window 
 

1,509 cd/m²
1,568 cd/m²

Peak 25% Window 
 

1,406 cd/m²
1,266 cd/m²

Peak 50% Window 
 

844 cd/m²
894 cd/m²

Peak 100% Window 
 

532 cd/m²
537 cd/m²

Sustained 2% Window 
 

1,031 cd/m²
872 cd/m²

Sustained 10% Window 
 

1,487 cd/m²
1,513 cd/m²

Sustained 25% Window 
 

1,329 cd/m²
1,253 cd/m²

Sustained 50% Window 
 

840 cd/m²
891 cd/m²

Sustained 100% Window 
 

531 cd/m²
537 cd/m²

Automatic Brightness Limiting (ABL) 
 

0.053
0.052
Show Text 
Black Level

Contrast 
 

8.2
9.4

Contrast Picture  

Contrast 
 

135,500 : 1
265,133 : 1

Native Contrast 
 

5,651 : 1
8,392 : 1
Show Text 

Lighting Zone Precision 
 

7.5
7.0

Lighting Zone Precision Picture  

Show Text 

Lighting Zone Transitions 
 

8.0
7.0

Preferred LD Video, Moving Object  

Local Dimming 
 

Yes
Yes

Backlight 
 

Full-Array
Full-Array

Dimming Zone Count Of The Tested TV 
 

1,248
966
Show Text 

Contrast And Dark Details In Game Mode 
 

8.0
7.5

Lighting Zone Precision Photo In Game Mode  

Preferred LD Video, Moving Object In Game Mode  

Game Transitions With VRR And Preferred LD  

Show Text 

Black Uniformity 
 

9.5
7.5

Black Uniformity Picture With Preferred Local Dimming  

Std. Dev. 
 

0.269%
1.253%

Native Black Uniformity Picture  

Native Std. Dev. 
 

0.420%
0.424%
Show Text 
Color

SDR Color Volume 
 

8.0
7.5

DCI-P3 Gamut Rings  

CIELAB DCI-P3 Coverage 
 

92.27%
89.42%

BT.2020 Gamut Rings  

CIELAB BT.2020 Coverage 
 

70.17%
66.06%
Show Text 

HDR Color Volume 
 

8.5
8.0

P3 Color Volume ITP Picture  

1,000 cd/m² DCI P3 Coverage ITP 
 

82.8%
84.4%

2020 Color Volume ITP Picture  

10,000 cd/m² BT.2020 Coverage ITP 
 

44.8%
40.0%

White Luminance 
 

1,199 cd/m²
975 cd/m²

Red Luminance 
 

291 cd/m²
221 cd/m²

Green Luminance 
 

826 cd/m²
678 cd/m²

Blue Luminance 
 

91 cd/m²
63 cd/m²

Cyan Luminance 
 

920 cd/m²
741 cd/m²

Magenta Luminance 
 

383 cd/m²
207 cd/m²

Yellow Luminance 
 

1,117 cd/m²
840 cd/m²
Show Text 

SDR Pre-Calibration Color Accuracy 
 

5.2
8.2

Pre White Balance Picture  

Pre Gamma Curve Picture  

Pre Color Picture  

White Balance dE 2000 
 

6.27
2.44

Color dE 2000 
 

3.22
2.14

Gamma 
 

2.20
2.02

Color Temperature 
 

5,794 K
6,674 K

Picture Mode 
 

Movie
Movie

Color Temp Setting 
 

Warm -5
warm 5

Gamma Setting 
 

2.2
2.2
Show Text 

SDR Post-Calibration Color Accuracy 
 

9.7
9.6

Post White Balance Picture  

Post Gamma Curve Picture  

Post Color Picture  

White Balance dE 2000 
 

0.40
0.34

Color dE 2000 
 

0.48
0.90

Gamma 
 

2.21
2.16

Color Temperature 
 

6,470 K
6,502 K

White Balance Calibration 
 

20 point
20 point

Color Calibration 
 

Yes
Yes
Show Text 

HDR Pre-Calibration Color Accuracy 
 

7.0
5.6

HDR Pre White Balance Picture  

HDR Pre Color Picture  

White Balance dE ITP 
 

14.66
14.87

Color dE ITP 
 

19.2
18.2

Color Temperature 
 

6,534 K
7,503 K

Picture Mode 
 

Movie
Movie
Show Text 

HDR Post-Calibration Color Accuracy 
 

9.2
7.9

HDR Post White Balance Picture  

HDR Post Color Picture  

White Balance dE ITP 
 

2.86
9.80

Color dE ITP 
 

4.70
9.20

Color Temperature 
 

6,358 K
6,525 K
Show Text 
Processing

PQ EOTF Tracking 
 

5.3
8.3

PQ EOTF Graph  

See details
See details

600 Nit Tracking Delta 
 

0.0156
0.0045

1000 Nit Tracking Delta 
 

0.0155
0.0045

4000 Nit Tracking Delta 
 

0.0156
0.0045
Show Text 

Low-Quality Content Smoothing 
 

8.1
8.1

Low-Quality Content Smoothing Picture  

Smoothing 
 

8.5
8.5

Detail Preservation 
 

7.0
7.0
Show Text 

Upscaling: Sharpness Processing 
 

7.5
7.0

Sharpness Picture - 480p  

Show Text 

HDR Native Gradient 
 

7.5
7.3

HDR Gradient Picture  

100% Black To 50% Gray  

6.0
6.0

50% Gray To 100% White  

6.0
8.0

100% Black To 50% Red  

8.0
6.0

50% Red To 100% Red  

8.0
8.0

100% Black To 50% Green  

8.0
8.0

50% Green To 100% Green  

8.0
6.0

100% Black To 50% Blue  

8.0
8.0

50% Blue To 100% Blue  

8.0
8.0
Show Text 
Game Mode Responsiveness

Input Lag 
 

8.3
8.8

1080p @ 60Hz 
 

14.3 ms
10.1 ms

1080p @ 60Hz Outside Game Mode 
 

125.2 ms
109.1 ms

1080p @ 120Hz 
 

6.4 ms
5.8 ms

1080p @ Max Refresh Rate 
 

8.1 ms
3.5 ms

4k @ 60Hz 
 

14.4 ms
10.1 ms

4k @ 60Hz @ 4:4:4 
 

14.8 ms
14.0 ms

4k @ 60Hz Outside Game Mode 
 

124.9 ms
108.4 ms

4k @ 60Hz With Interpolation 
 

116.9 ms
113.5 ms

4k @ 120Hz 
 

6.0 ms
5.8 ms

4k @ Max Refresh Rate 
 

5.2 ms
5.3 ms

8k @ 60Hz 
 

N/A
N/A
Show Text 

Supported Resolutions 
 

9.5
9.5

Resolution  

4k
4k

480p @ 59.94Hz (Widescreen) 
 

Yes
Yes

720p @ 59.94Hz 
 

Yes
Yes

1080p @ 60Hz @ 4:4:4 
 

Yes
Yes

1080p @ 120Hz 
 

Yes
Yes

1080p Maximum Refresh Rate 
 

240 Hz
288 Hz

4k @ 60Hz 
 

Yes
Yes

4k @ 60Hz @ 4:4:4 
 

Yes
Yes

4k @ 120Hz 
 

Yes
Yes

4k @ 120Hz @ 4:4:4 
 

Yes
Yes

4k Maximum Refresh Rate 
 

144 Hz
144 Hz

8k @ 30Hz Or 24Hz 
 

No
No

8k @ 60Hz 
 

No
No
Show Text 

Variable Refresh Rate 
 

8.8
8.8

Native Refresh Rate 
 

144Hz
144Hz

Variable Refresh Rate 
 

Yes
Yes

HDMI Forum VRR 
 

Yes
Yes

FreeSync 
 

Yes
Yes

G-SYNC Compatible 
 

Yes
Yes

4k VRR Maximum 
 

144 Hz
144 Hz

4k VRR Minimum 
 

< 20 Hz
< 20 Hz

1080p VRR Maximum 
 

240 Hz
288 Hz

1080p VRR Minimum 
 

< 20 Hz
< 20 Hz

VRR + Local Dimming  

Yes
Yes
Show Text 

CAD In Game Mode @ Max Refresh Rate 
 

6.7
7.4

Pursuit Photo Max Refresh  

CAD Heatmap Max Refresh 
 

Transition At Max Refresh 
 

transition-game-max-0-31
0 to 31
transition-game-max-0-31
0 to 31

Avg. CAD 
 

225
183

Best 10% CAD 
 

121
82

Worst 10% CAD 
 

357
298
Show Text 

CAD In Game Mode @ 120Hz 
 

6.8
6.9

Pursuit Photo 120Hz  

CAD Heatmap 120Hz  

Transition At 120Hz 
 

transition-game-120-0-31
0 to 31
transition-game-120-0-31
0 to 31

Avg. CAD 
 

212
204

Best 10% CAD 
 

86
83

Worst 10% CAD 
 

460
431
Show Text 

CAD In Game Mode @ 60Hz 
 

6.8
6.8

Pursuit Photo 60Hz  

CAD Heatmap 60Hz 
 

Transition 60Hz 
 

transition-game-60-0-31
0 to 31
transition-game-60-0-31
0 to 31

Avg. CAD 
 

212
234

Best 10% CAD 
 

85
81

Worst 10% CAD 
 

457
392
Show Text 

PS5 Compatibility 
 

PS5 Screenshot  

Auto Low Latency Mode (ALLM) 
 

Yes
Yes

4k @ 120Hz 
 

Yes
Yes

1440p @ 120Hz 
 

Yes
Yes

1080p @ 120Hz 
 

Yes
Yes

HDR 
 

Yes
Yes

VRR 
 

Yes
Yes
Show Text 

Xbox Series X|S Compatibility 
 

Xbox Series X Screenshot  

Auto Low Latency Mode (ALLM) 
 

Yes
Yes

4k @ 120Hz 
 

Yes
Yes

1440p @ 120Hz 
 

Yes
Yes

1080p @ 120Hz 
 

Yes
Yes

HDR 
 

Yes
Yes

VRR 
 

Yes
Yes
Show Text 
Motion Handling

Stutter 
 

6.4
7.3

Frame Hold Time @ 24 fps 
 

35.4 ms
31.4 ms

Frame Hold Time @ 60 fps 
 

10.4 ms
6.4 ms
Show Text 

24p Judder 
 

10
10

Judder-Free 24p 
 

Yes
Yes

Judder-Free 24p via 60p 
 

Yes
Yes

Judder-Free 24p via 60i 
 

Yes
Yes

Judder-Free 24p via Native Apps 
 

Yes
Yes
Show Text 

Response Time 
 

8.0
8.0

Pursuit Photo 60Hz  

Response Time Heatmap 60Hz 
 

Transition At 60Hz 
 

transition-60-0-31
0 to 31
transition-60-0-31
0 to 31

First Response Time 
 

6.3 ms
6.2 ms

Total Response Time 
 

10.0 ms
10.3 ms

Worst 10% Response Time 
 

21.8 ms
25.3 ms
Show Text 

Flicker 
 

Backlight chart 
 

Flicker-Free 
 

No
No

PWM Dimming Frequency 
 

10,000 Hz
10,400 Hz
Show Text 

Black Frame Insertion (BFI) 
 

BFI Picture  

BFI Frequency Picture  

Optional BFI 
 

Yes
Yes

Min Flicker For 60 fps 
 

60 Hz
60 Hz

60Hz For 60 fps 
 

Yes
Yes

120Hz For 120 fps 
 

Yes
Yes

Min Flicker For 60 fps In Game Mode 
 

60 Hz
60 Hz
Show Text 

Motion Interpolation 
 

Motion Interpolation (30 fps) Picture  

Motion Interpolation (30 fps) 
 

Yes
Yes

Motion Interpolation (60 fps) Picture  

Motion Interpolation (60 fps) 
 

Yes
Yes
Show Text 
Reflections

Direct Reflections 
 

5.3
6.5

Ring Light Picture  

Direct Reflections Graph  

See details
See details

Peak Direct Reflection Intensity 
 

67.1%
41.5%

Screen Finish 
 

Glossy
Glossy
Show Text 

Ambient Black Level Raise 
 

9.1
9.0

Black Level Raise Picture  

Bright Room Black Level Raise Graph  

See details
See details

Black Luminance @ 0 lx 
 

0.00 cd/m²
0.00 cd/m²

Black Luminance @ 1000 lx 
 

0.38 cd/m²
0.43 cd/m²
Show Text 

Total Reflected Light 
 

5.9
8.1

Bright Room Off Picture  

Ring Picture Total Reflection  

Total Reflected Light Intensity 
 

27,092% ⋅ pixel
10,301% ⋅ pixel

Diffraction Artifacts 
 

Yes
Yes
Show Text 

Ambient Color Saturation 
 

8.5
7.4

Bright Room Color Volume Graph  

See details
See details

Low-Luminance Colors @ 1000 lx 
 

71.10%
61.63%

Mid-Luminance Colors @ 1000 lx 
 

71.77%
65.60%

High-Luminance Colors @ 1000 lx 
 

67.56%
59.72%
Show Text 
Panel

Viewing Angle 
 

6.7
6.6

Viewing Angle Video  

Chroma Graph  

Color Washout 
 

23°
25°

Hue Graph  

Color Shift 
 

65°
58°

Lightness Graph  

Brightness Loss 
 

30°
30°

Black Level Raise 
 

18°
17°

Gamma Shift 
 

20°
20°
Show Text 

Gray Uniformity 
 

6.5
6.9

50% Uniformity Picture  

50% Std. Dev. 
 

3.346%
2.165%

50% DSE 
 

0.182%
0.195%

5% Uniformity Picture  

5% Std. Dev. 
 

1.050%
0.468%

5% DSE 
 

0.084%
0.092%
Show Text 

Panel Technology 
 

Spectral Power Distribution  

Pixels Picture  

Type  

LED
LED

Sub-Type 
 

VA
VA

Subpixel Layout 
 

BGR
BGR
Show Text 
Inputs

Input Specifications  

Side Inputs Picture  

Rear Inputs Picture  

HDMI  

4 (2x HDMI 2.0, 2x HDMI 2.1)
4 (2x HDMI 2.0, 2x HDMI 2.1)

HDMI 2.1 Rated Speed 
 

48 Gbps
48 Gbps

ATSC Tuner 
 

1.0
1.0

USB Ports  

2
2

USB 3.0 
 

Yes (1)
Yes (1)

Audio Out 3.5mm  

1
0

Wi-Fi  

Yes (2.4 GHz, 5 GHz)
Yes (2.4 GHz, 5 GHz)

Ethernet Speed  

100 Mbps
100 Mbps

Composite In  

1 (Adapter Required, Not Incl.)
0

Digital Optical Audio Out  

1
1
Show Text 

Audio Passthrough 
 

ARC/eARC Port 
 

eARC
eARC

eARC: Dolby Atmos Over Dolby Digital Plus 
 

Yes
Yes

eARC: Dolby Digital Plus 7.1 
 

Yes
Yes

eARC: LPCM 7.1 Over Dolby MAT 
 

Yes
Yes

eARC: Dolby TrueHD 7.1 
 

Yes
Yes

eARC: DTS:X Over DTS-HD MA 
 

Yes
Yes

eARC: DTS-HD Master Audio 7.1 
 

Yes
Yes

eARC: LPCM Channels (Bitstream) 
 

7.1
7.1

ARC: Dolby Digital 5.1 
 

Yes
Yes

ARC: DTS 5.1 
 

Yes
Yes

Optical: Dolby Digital 5.1 
 

Yes
Yes

Optical: DTS 5.1 
 

Yes
Yes
Show Text 

HDR Format Support  

HDR10 
 

Yes
Yes

HDR10+ 
 

Yes
Yes

Dolby Vision 
 

Yes
Yes

HLG 
 

Yes
Yes
Design

Style  

Design Picture  

Curved  

No
No
Show Text 

Stand  

Stand Picture  

Show Text 

Back  

Back Picture  

Wall Mount  

VESA 400x400
VESA 300x300
Show Text 

Borders  

Borders Picture  

Borders  

0.31" (0.8 cm)
0.39" (1.0 cm)

Thickness  

Thickness Picture  

Max Thickness  

3.11" (7.9 cm)
2.20" (5.6 cm)

Build Quality 
 

8.0
7.0

Build quality picture  

Show Text 
Smart Features

Interface 
 

Smart TV Picture  

Smart OS  

Google TV
Google TV

Version  

12
12
Show Text 

Ad-Free 
 

0.0
0.0

Ads Picture  

Ads 
 

Yes
Yes

Opt-out 
 

No
No

Suggested Content in Home 
 

Yes
Yes

Opt-out of Suggested Content 
 

No
No
Show Text 

Remote  

Remote Picture  

Voice Control  

Yes
Yes
Show Text 

TV Controls  

Controls Picture  

Mute Switch 
 

Yes
Yes
Show Text 

In The Box  

In The Box Picture  

Show Text 

Misc  

Power Consumption  

70 W
61 W

Power Consumption (Max)  

309 W
218 W

Firmware  

V8-T653T02-LF1V097
V8-0012T02-LF1V201
Sound Quality

Frequency Response 
 

6.6
5.6

Frequency Response  

See details
See details

Low-Frequency Extension 
 

119.87 Hz
134.54 Hz

Std. Dev. @ 70 
 

3.63 dB
2.63 dB

Std. Dev. @ 80 
 

3.64 dB
2.84 dB

Std. Dev. @ Max 
 

4.40 dB
4.26 dB

Max 
 

85.9 dB SPL
82.0 dB SPL

Dynamic Range Compression 
 

1.69 dB
4.46 dB

Digital Room Correction  

No
No
Show Text 

Check Price

55"
55QM751G
Amazon.com

TCL QM751G

TCL QM7K

Comments

  1. Comparison

TCL QM751G vs TCL QM7K: Main Discussion

What do you think of these products? Let us know below.


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  1. 2
    1
    0
    1
    0

    How can there be more blooming in the QM7k if the new HVA panel improves the reduction of the distance between the backlight and the LCD panel? Very strange. Maybe different sizes return different results.

    Unfortunately, we don’t know for sure. A big factor in blooming control is a TV’s local dimming algorithm, so it’s likely that’s at least part of the reason it’s a bit worse on the QM7K. It’s also possible that the different sizes perform a bit differently when it comes to blooming.

  2. 2
    1
    0
    1
    0

    How can there be more blooming in the QM7k if the new HVA panel improves the reduction of the distance between the backlight and the LCD panel? Very strange.

    Maybe different sizes return different results.

  3. 2
    1
    0
    1
    0

    If you want to compare two televisions they must be the same size: different local dimming zones can change the result.

  4. 2
    1
    0
    1
    0

    Well that was largely disappointing! The QM7G performed better in most respects! The QM7K has better contrast and that is it.