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HP OMEN 27 Monitor Review

Tested using Methodology v1.0
Review updated Sep 06, 2018 at 08:20 am
Latest change: Retest Jan 07, 2019 at 03:28 pm
HP OMEN 27 Picture
Mixed Usage
Media Creation
HDR Gaming

The HP OMEN 27 is an LCD QHD monitor with a TN panel. It has decent picture quality and is more suitable for brighter environments as it can get bright and can handle reflections well. It has excellent motion handling with support for G-Sync variable refresh rate and black frame insertion to improve motion quality and clarity. Unfortunately, the best picture is reserved for those sitting right in front, and the low native contrast ratio along with the bad black uniformity make dark room performance disappointing.

Our Verdict

7.3 Mixed Usage

The HP OMEN 27 is a decent monitor for mixed usage. The disappointing contrast and bad black uniformity in addition to the good brightness and great reflection handling make this monitor suitable for brighter rooms. Its great motion handling and low input lag make a good choice for gamers.

  • Excellent refresh rate and gaming features
  • Very low input lag
  • Terrible black uniformity
  • Poor ergonomics
7.2 Office

Decent performance for office use for this HP OMEN 27. The QHD resolution is very good for the 27" screen allowing you to display more detail. On the other hand, the viewing angles and the ergonomics of the monitor are not helping if you want to work side by side with your colleagues.

8.3 Gaming

Very good gaming performance for the HP OMEN 27. This is mainly due to the very low input lag and fast pixel response time, along with the excellent motion handling with a high refresh rate and support for variable refresh rate and black frame insertion to clear blur. This monitor will please most hardcore gamers who are looking for great responsiveness along with smooth motion.

7.0 Multimedia

The OMEN 27 is a decent monitor for multimedia. The lack of good native contrast, the bad black uniformity, and the poor ergonomics do not make watching multimedia a great experience. If you plan to use this monitor for streaming movies in a dark room, you would be better off with a different monitor.

7.2 Media Creation

Decent performance of the HP OMEN 27 in media creation. The QHD resolution for the 27" inch screen area is good as it has enough detail. On the other hand, the viewing angles and bad ergonomics do not allow you to easily work with your colleagues. Finally, those in the professional media publishing should be aware that this monitor can not display the entire Adobe RGB color space.

5.3 HDR Gaming

HDR is not supported, and the monitor can't produce bright, saturated colors. If you are looking for HDR support then check out the Samsung CHG70.

  • 7.3 Mixed Usage
  • 7.2 Office
  • 8.3 Gaming
  • 7.0 Multimedia
  • 7.2 Media Creation
  • 5.3 HDR Gaming
  1. Updated Jan 07, 2019: The gradient score has been updated, as it was scored incorrectly at the time of the review.
  2. Updated Sep 06, 2018: Review published.
  3. Updated Sep 04, 2018: Our testers have started testing this product.
  4. Updated Sep 04, 2018: Early access published.
  5. Updated Sep 02, 2018: The product has arrived in our lab, and our testers will start evaluating it soon.
  6. Updated Aug 15, 2018: We've purchased the product and are waiting for it to arrive in our lab.

Differences Between Sizes And Variants

We tested the 27" model (OMEN 27). The other models shown in the table below have different specs and our review isn't representative of them.

If someone comes across a different type of panel or if their HP OMEN 27 doesn't correspond to our review, let us know and we will update the review. Note that some tests such as the gray uniformity may vary between individual units.

Model Size Refresh rate Resolution
OMEN 24.5 24.5" 144Hz FHD(1920x1080)
OMEN 27 27" 144Hz QHD(2560x1440)
OMEN X 27 27" 240Hz QHD(2560x1440)
OMEN QHD 32" 75Hz QHD(2560x1440)
OMEN 35" Curve 35" 100Hz WQHD(3440x1440)

The model we've tested was manufactured in August 2017.

Compared To Other Monitors

Comparison picture

Left: Samsung CHG70. Middle: HP OMEN 27. Right: ASUS ROG PG279Q.
Unlike our other photographs, this picture wasn't taken under a controlled environment, so do not draw conclusions from it.

The HP OMEN 27 is a monitor with excellent motion handling and very low input lag. See our recommendations for the best 1440p 144hz monitors, the best gaming monitors, and the best budget gaming monitors.

LG 27GL850-B/27GL83A-B

The LG 27GL850-B/27GL83A-B is much better than the HP OMEN 27 for most uses, but they offer very similar performance for gaming. The HP has better reflection handling and an optional black frame insertion feature, but the LG has slightly better motion handling overall, with slightly clearer motion. The LG supports HDR and has much better viewing angles, as well as slightly better ergonomics.


The HP OMEN 27 is slightly better than the HP OMEN X 25f. The 25f has a faster refresh rate, but the difference in response time is minor, and the 25f has a lower native resolution and smaller screen size than the OMEN 27. The X 25f has better black uniformity and it supports FreeSync, whereas the OMEN 27 supports G-SYNC.


The HP OMEN X 27 is a bit better than the HP OMEN 27. The 'X' version has a higher native refresh rate and it supports HDR. The non-'X' version supports G-SYNC instead of FreeSync, and it has an optional black frame insertion feature.


The AOC AGON AG271QX is better than the HP OMEN 27. The AOC AGON AG271QX has better ergonomics and this is very useful no matter the usage. It also has better black uniformity that improves the quality of blacks in a dark room. On the other hand, the HP supports the black frame insertion feature that helps reduce blur during fast action.


The ASUS ROG PG279Q is a significantly better monitor than the HP OMEN 27 in almost every use. The ASUS has an IPS panel and thus better viewing angles than the TN panel HP. Also, the ASUS has better uniformity and better contrast ratio, and this is great for many different uses.

Samsung CHG70

The Samsung CHG70 is a much better monitor than the HP OMEN 27 in almost every use. The Samsung has better contrast and overall better dark room performance. It also supports HDR and delivers better picture quality than the HP. The HP, on the other hand, has a TN panel and a very fast pixel response time that leaves a very small blur trail. Both monitors support variable refresh rate but through different implementations. The HP supports G-SYNC whereas the Samsung supports FreeSync. So be careful to have a matching graphics card or gaming console.

Dell S2716DG

The Dell S2716DG is a bit better than the HP OMEN 27, mainly due to the better ergonomics that allow you to position the monitor to your liking. Other than that, the two monitors perform very similarly.

Dell S2719DGF

The HP OMEN 27 and the Dell S2719DGF both have very similar performance in almost all uses. The Dell S2719DGF supports FreeSync VRR whereas the HP Omen 27 supports G-SYNC VRR. The Dell has better ergonomics, but the HP has a black frame insertion (BFI) feature that isn't available on the Dell.

Samsung JG50

The HP OMEN 27 is better than the Samsung JG50, although they use different panel types. The OMEN 27 has a TN panel, which delivers outstanding motion, with almost no noticeable blur trail behind fast-moving objects. The OMEN also supports G-SYNC and has better ergonomics. The JG50, on the other hand, uses a VA panel, which delivers much deeper blacks but has a slightly slower response time.


The HP OMEN 27i is better than the HP OMEN 27 for most users. The 27i has better viewing angles, better reflection handling, and better uniformity. Some gamers may prefer the older OMEN 27 though, as it has a faster response time, and it supports NVIDIA G-SYNC variable refresh rate technology.

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Test Results

Size 27"
Curved No
Curve radius N/A
Weight (without stand)
9.5 lbs (4.3 kg)
Weight (with stand)
14.1 lbs (6.4 kg)

The design of the HP OMEN 27 is good. The stand provides the monitor with stability and the entire construction feels sturdy. The ergonomics will give you some trouble until you are able to position the monitor to your liking, and the thickness of the monitor, when placed on its stand, will not allow you to place it too close to the wall.  The monitor has a neat LED light feature to create a nice ambiance.

10.3" (26.2 cm)
10.3" (26.2 cm)

The stand is metallic, heavy and very sturdy and supports the monitor well, but does allow some wobbling.

Height Adjustment
5.2" (13.2 cm)
Switch portrait/landscape No
Swivel Range N/A
Tilt Range -20° to 5°

The ergonomics of this monitor are poor as it cannot swivel or rotate. It can, however, be easily positioned to the height of your liking, and be tilted so as to face you directly.

Wall Mount VESA 100x100

The back of the monitor is plastic but feels more premium. There is a vent along the top edge to help dissipate heat. The stand has a hook at the top for your headphones and a loop near the base that helps cable management.

0.3" (0.8 cm)

The border around the monitor is metallic with average thickness and a very thin bezel. The screen has a small gap between the bezel and where the pixels start. This is similar to other monitors we've tested like HP 22CWA.

Thickness (with stand)
7.3" (18.5 cm)
Thickness (without stand)
3.8" (9.7 cm)

The monitor looks thick when attached to its stand. If you wish to VESA mount it, you must first attach the included VESA adaptor. The adapter attaches to the monitor using the same metal mounting socket that the monitor uses to attach to the stand (shown here). Unfortunately, when you attach the adapter, the entire setup is quite thick and the monitor still protrudes quite a lot from the VESA mount.

Build Quality

Excellent build quality. The whole construction feels robust and the metallic stand and border give it a premium feel. There are no gaps in the monitor and you should have no issues with it.

Picture Quality
Picture Quality
LCD Type
Native Contrast
755 : 1
Contrast with local dimming

The OMEN has a disappointing native contrast. This is expected for a monitor with a TN panel. Its native contrast is very similar to that of ASUS PB277Q and it is in the middle of the list of TN monitors.

Picture Quality
Local Dimming
Local Dimming

The HP OMEN 27 does not have a local dimming feature. The video is for reference only.

Picture Quality
SDR Peak Brightness
SDR Real Scene
399 cd/m²
SDR Peak 2% Window
424 cd/m²
SDR Peak 10% Window
421 cd/m²
SDR Peak 25% Window
419 cd/m²
SDR Peak 50% Window
418 cd/m²
SDR Peak 100% Window
417 cd/m²
SDR Sustained 2% Window
422 cd/m²
SDR Sustained 10% Window
420 cd/m²
SDR Sustained 25% Window
418 cd/m²
SDR Sustained 50% Window
417 cd/m²
SDR Sustained 100% Window
416 cd/m²

The SDR Peak brightness of this HP OMEN 27 monitor is great. The monitor is suitable for brighter rooms as it can fight glare and its brightness is consistent among the bright window sizes. It is one of the highest brightness levels we have measured so far, similar to other TN monitors like the Acer GN246HL or the Dell S2417DG.

Picture Quality
HDR Peak Brightness
HDR Real Scene
HDR Peak 2% Window
HDR Peak 10% Window
HDR Peak 25% Window
HDR Peak 50% Window
HDR Peak 100% Window
HDR Sustained 2% Window
HDR Sustained 10% Window
HDR Sustained 25% Window
HDR Sustained 50% Window
HDR Sustained 100% Window

HDR is not supported.

Picture Quality
Horizontal Viewing Angle
Color Shift from Left
Color Shift from Right
Brightness from Left
Brightness from Right
Black Level from Left
Black Level from Right
Curve Radius N/A

TN monitors are notorious for their bad viewing angles, so the disappointing performance of the HP OMEN 27 is no surprise. At a few degrees off center, the black level raises and the image turns grayish, while a few degrees more and the colors start to shift. This is a very similar behavior to the ASUS VG248QE which also has a TN panel.

Picture Quality
Vertical Viewing Angle
Color Shift from Below
Color Shift from Above
Brightness from Below
Brightness from Above
Black Level from Below
Black Level from Above

The situation is slightly better with the vertical viewing angles. When you look from above the monitor keeps its image quality for slightly higher off-center angles. However, when you look from below the image loses accuracy at very small angles. This causes the top edge of the screen to look darker when you sit close to the screen.

This is one of the best results for TN monitors we've tested so far, second only to Dell S2417DG.

Picture Quality
Gray Uniformity
50% Std. Dev.
50% DSE
5% Std. Dev.
5% DSE

The HP OMEN 27 has good gray uniformity, especially in the darker gray shades. There are some obvious uniformity issues but it is unlikely that you will spot any dirty screen effect. The image shows the top edge darker than the rest of the screen. This is because of the bad viewing angle from below, rather than a uniformity issue. This behavior is very similar to the Dell S2417DG.

Picture Quality
Black Uniformity
Native Std. Dev.
Std. Dev. w/ L.D.

Bad black uniformity. One of the worst black uniformity performances we have tested so far and the worst among TN panels just after Dell S2417DG. Backlight bleed is evident everywhere in the screen.

Picture Quality
Pre Calibration
Picture Mode
Custom RGB
427 cd/m²
Luminance Settings
Contrast Setting
RGB controls
Color Temperature
6,474 K
White Balance dE
Color dE

Great out of the box color accuracy for the HP OMEN 27. The Picture mode that we used is 'Custom RGB' since it allows for changing the white balance. However, the 'Native', 'Custom RGB', 'Gaming - Racing' and 'Gaming - FPS' Picture modes were all nearly identical out of the box.

The out of the box white balance dE is well below our threshold of 3, so it is very hard to spot the gray inaccuracies. The Color dE is also below our threshold of 3, but in this case, color inaccuracies will be easier to spot, although most people still won't notice them. The color temperature is very close to our target of 6500 K, and the average gamma is spot on our 2.2 target, although the curve does not quite follow our target curve. Dark shades look slightly darker whereas brighter colors are a little over saturated.

Picture Quality
Post Calibration
Picture Mode
Custom RGB
102 cd/m²
Luminance Settings
Contrast Setting
RGB Controls
Color Temperature
6,437 K
White Balance dE
Color dE

Excellent color accuracy post calibration for the HP OMEN 27, similar to the Dell S2716DG. The white balance dE and the color dE were brought down to below 1 and thus color inaccuracies are almost impossible to spot. The gamma curve now follows our target curve more closely even though the average value is slightly off our 2.2 target.

Note: The contrast wasn't listed in the OSD, but it was changeable via DDC.

You can download our ICC profile calibration here.

Picture Quality
SDR Color Gamut
sRGB xy
Adobe RGB xy

s.RGB Picture Mode: Custom RGB (calibrated)
Adobe RGB Picture Mode: Custom RGB

Excellent coverage of the s.RGB colorspace for the HP OMEN 27. On the other hand, the wider Adobe RGB colorspace used by professionals in graphics and publishing has limited coverage which might not be enough for those editing photos in the Adobe RGB color space.

Picture Quality
SDR Color Volume
sRGB in ICtCp
Adobe RGB in ICtCp

s.RGB Picture Mode: Custom RGB
Adobe RGB Picture Mode: Custom RGB

Excellent coverage of the s.RGB color volume mainly due to the excellent color gamut. On the contrary, the coverage of the Adobe RGB color volume that is used in the publishing media is not enough for those professionals out there.

Picture Quality
HDR Color Gamut
Wide Color Gamut
DCI P3 xy
Rec. 2020 xy

HDR is not supported.

Picture Quality
HDR Color Volume
DCI-P3 in ICtCp
Rec. 2020 in ICtCp

HDR is not supported.

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

No image retention is visible on this monitor. Even after 10 minutes of a high contrast static image, no retention is visible.

Picture Quality
Color Depth
8 Bit

Even though the overall gradient performance is decent, this HP OMEN 27 has banding in most dark colors. This is the worst performance of all the monitors we've tested until now.

Update 01/07/2019: The gradient score has been updated (6.8 -> 8.4), as it was scored incorrectly at the time of the review. The gradient photo is still valid, and shows good overall performance, with a few areas of bad banding in dark green and gray.

Picture Quality
Color Bleed
Pixel row error
Pixel column error

Excellent score in our color bleed test for the HP OMEN 27. There is some minor color bleeding when the monitor displays large areas of uniform color. In our test, this is depicted in the vertical columns image.

Picture Quality

The HP OMEN 27 has good reflection handling. The monitor's matte filter diminishes small reflections well and diffuses stronger light sources across the screen. This might be an issue in rooms with large bright windows.

Motion Blur
80% Response Time
2.3 ms
100% Response Time
5.9 ms
Best Overdrive Setting
Level 3

Response Time Level 1
Response Time Level 2
Response Time Level 3
Response Time Level 4
Response Time Level 6

Excellent performace and almost instantaneous response time for the HP OMEN 27, just like the Dell S2716DG.

The best results were obtained with Response Time set at 'Level 3 (default)' where the monitor has a little overshoot but it's barely noticeable in person. This means that there is very liitle blur on the screen when you move the mouse quickly or you display other fast action.

Image Flicker
Flicker-free Yes
PWM Dimming Frequency
0 Hz
Black Frame Insertion (BFI)
BFI Maximum Frequency
120 Hz
BFI Minimum Frequency
85 Hz

Excellent flicker performance on this HP OMEN 27, almost identical to Dell S2716DG. The backlight dims without flickering. There is some very small wobble but it shouldn't be visible.

The monitor has an option to introduce flicker to clear blur through NVIDIA ULMB which is the name of G-Sync's BFI implementation. The frequencies at which you can do it are: 120 Hz, 100 Hz and 85 Hz.

There is also a Pulse Width setting that changes the duration of each backlight pulse, similar to that of other G-Sync monitors like the Dell S2716DG. This makes motion appear even more clear but also decreases brightness even more.

There is more overshoot when BFI is enabled, and the overshoot cannot be reduced. You can see this in the BFI photo where there is more visible overshoot than the Response Time photo. You can not reduce overshoot as the Response Time section of the menu is disabled when BFI is on.

Refresh Rate
Variable Refresh Rate
Native Refresh Rate
144 Hz
Factory Overclock
165 Hz
Variable Refresh Rate
G-SYNC Compatible
Yes (Native)
VRR Maximum
144 Hz
VRR Minimum
< 20 Hz
VRR Maximum With OC
165 Hz
VRR Supported Connectors DisplayPort

Excellent performance of the HP OMEN 27 on our refresh rate test, at par with rival monitor Dell S2716DG. The monitor has a very fast refresh rate of 144Hz that can be boosted to 165Hz through the menu. It has a very good support of the G-SYNC variable refresh rate and will keep those gamers with NVIDIA cards happy.

The HDMI port is limited to 60 Hz and has no G-SYNC support.

The newer HP OMEN X 27 has a higher native refresh rate, and it supports FreeSync instead of G-SYNC.

Input Lag
Native Resolution
4.5 ms
Non-Native Res @ Native Refresh
Native Resolution @ 60 Hz
12.2 ms
Variable Refresh Rate
5.2 ms
10 bit HDR
Black Frame Insertion (BFI)
10.7 ms

BFI Frequency Tested: 120 Hz

Over DisplayPort the only supported resolutions are 640x480, 800x600, 1024x768 and 2560x1440, and only 2560x1440 is capable of 144 Hz; this isn't usually a problem though because most graphics cards will upscale to 2560x1440 without you even knowing.

Resolution and Size
Native Resolution 2560 x 1440
Aspect Ratio 16:9
Megapixels 3.7 MP
Pixel Density 109 PPI
Screen Diagonal 27.0"
Screen Area 311 in²

The HP OMEN 27 has a great QHD resolution which allows it to display a good amount of detail on its 27-inch screen. This is the same as rival monitor Dell S2716DG.

Total Inputs
DisplayPort 1 (DP 1.2)
Mini DisplayPort No
HDMI 1 (HDMI 1.4)
DisplayPort Out No
USB 2 (USB 3.0)
Analog Audio Out 3.5mm 1
Microphone In 3.5mm No
Digital Optical Audio Out No
Analog Audio Out RCA No
Power Supply External Brick
Additional Features
HDR10 No
Multiple input display

Here are some monitor features that you might find useful:

  • Dark Boost: raises the black level to make dark details easier to see in games.
  • Ambient Lighting: The monitor has an LED light to illuminate the stand and create a nice ambiance.The Ambient Lighting system has multiple modes, as shown here.
    • Show average screen color
    • Show a preset color, or even enter your own RGB, as shown here.
    • Cycle between random colors on a timer
    • The brightness of the ambient light can also be changed.
  • 2 USB 3.0 ports: no fast charging.
  • A headphone out port: but no speakers.

On-Screen Display (OSD)

The OSD is hard to use. The layout and naming can be confusing, the controls are unintuitive, and the highlighted entry jumps. Fortunately, once the monitor has been set up for the first time you won't need to browse the OSD all that often.


The buttons are very hard to use as they're on the back of the monitor and they can't be seen from the front. You have to reach underneath the monitor blindly and since they're flush with the back of the monitor, they can be hard to find. Furthermore, the buttons are wide with little space separating them so they're hard to tell apart when you're reaching blindly. And this, of course, leads to pressing the wrong button fairly often. Not one of the better control schemes we've seen on monitors so far.

In The Box

  • Manual and drivers
  • VESA adaptor and screws
  • USB cable
  • HDMI cable
  • DisplayPort cable
  • Not shown: Power cable