HP Omen 27u 144 Hz screen test: design and image quality

Ergonomics

The original design of the HP Omen 27u

The original design of the HP Omen 27u

The Omen 27u displays a rather original design in the monitor market gaming. The materials are noble, in particular the screen casing and the foot, both in aluminum.

The rear of the day monitor...

The rear of the day monitor…

...and at night.

The back of the monitor offers a little more character and assumes its style gaming. The foot incorporates a fairly basic, but effective cable passage, and above all the design is even more assertive. Gaming monitor requires, there is a luminous border that surrounds the housing grouping the electronics. It is rather pretty and above all very well finished. Note that this monitor is VESA 100 x 100 mm compatible, but requires a stand that can rotate 45°.

In addition to the rear, the monitor can count on a lighting system under the slab.

In addition to the rear, the monitor can count on a lighting system under the slab.

It also includes under-the-panel lighting that is supposed to reduce eye strain by creating extra lighting. Like the rear lighting, it is configurable via the OSD (color, intensity, beat, random change, etc.).

The foot also allows you to put a helmet on it.

The foot also allows you to put a helmet on it.

The stand also incorporates a rather practical helmet holder that avoids misplacing his favorite helmet.

The square foot and the rather compact external power supply.

The square foot and the rather compact external power supply.

The foot is not very bulky, nor is the power supply which will take place under the desk. It is less discreet than an integrated power supply, but it facilitates replacement in the event of failure.

Height and tilt adjustment.

Height and tilt adjustment.

The screen focuses on the essential settings, namely height adjustment over 13 cm and tilt between -5° and +20°. The manufacturer skips left and right rotation as well as portrait swivel, but that’s not really important on a dedicated gaming monitor.

The connection

The connection consists of two HDMI inputs including one HDMI 2.1 compatible (4K 120 Hz, VRR), a DisplayPort 1.4 input, a headphone output, two USB 3.0 ports and a USB-C port (used only to replicate USB ports). It is angled at 45°, making it accessible without having to bend over behind the monitor. This is particularly useful for easier access to USB ports.

A joystick and a power button.

A joystick and a power button.

To navigate the OSD menus, HP uses a single joystick. For us, it’s simply the most effective system yet for quickly setting up a monitor. HP’s also allows you to use the four directions as customizable shortcuts to change sources, choose image mode, adjust brightness, etc. A good idea ! The OSD also allows you to adjust the blue light filter to four levels and change the basic settings (brightness, contrast, temperature, overdrive, etc.).

The HP Omen 27u monitor on our desk.

The HP Omen 27u monitor on our desk.

On our 120 x 80 cm desk, the HP Omen 27u is particularly comfortable with its compact dimensions. The foot still has a depth of 25.6 cm, but its design frees up space on the desk. The latest versions of the Windows and macOS operating systems perfectly handle Ultra HD definition and allow effective upscaling to 150% or even 200% (Full HD equivalent). The text elements are large enough to be readable and the image is perfectly sharp. On the other hand, the native definition of 3840 x 2160 px on a 27-inch panel, or 163 pixels per inch (ppi), is almost unusable without scaling. In games, the contribution of Ultra HD on a 27-inch panel is not necessarily obvious, and for the moment still, the choice of a Quad HD monitor, especially on this diagonal, seems to us more judicious , especially to reach 144 fps, except for playing with consoles.

Editor's Rating: 4 out of 5

Colors and contrast



Right out of the box, the HP Omen displays colors that can be considered accurate; as proof, we measured a delta E of just 1.7. The color temperature is very good, with a stable curve and an average of 6990 K very close to the reference value (6500 K). Only the gamma curve lacks a bit of stability, with very slightly overexposed dark grays. Logically, the average measured at 2.1 is slightly lower than the reference (2.2). The drop in brightness to 150 cd/m² has no impact on image quality, which remains equivalent. Finally, the calibration of the monitor to the probe makes it possible to perfectly smooth the temperature curve and improve color fidelity. The colorimetric profile is available on this link.

Contrast

Editor's Rating: 3 out of 5

1040:1

Measured at 1040:1, the average contrast ratio is rather average due to a black that drops to just 0.14 cd/m². In the image, this translates into washed out blacks that appear greyish in the dark. In broad daylight, this contrast ratio does not pose any particular problem. The Omen 27u monitor still remains a notch behind the best IPS monitors, such as the Asus VG27AQ with its contrast of 1220:1 or the AOC 27G2U and its 1250:1. Of course, the HP Omen 27u remains very far from the best VA monitors whose contrast ratio exceeds 4000:1, such as the Huawei MateView GT 34 or the MSI Optix MAG271CR.

The average difference in brightness homogeneity is measured at 5% over the entire 28-inch panel; a very good value which guarantees good homogeneity of the slab. The model we tested was not affected by any phenomenon of clouding. IPS panel obliges, the viewing angles are very wide and there is little variation in brightness when you observe the screen by offsetting it at 45°.

Editor's Rating: 4 out of 5

Reactivity

The Omen 27u does not use Pulse Width Modulation (PWM) to adjust brightness; it is therefore devoid of flicker and does not cause headaches for those who are sensitive to this phenomenon.

This monitor manages FreeSync between 48 and 144 Hz and therefore works optimally when the graphics card sends between 48 and 144 fps. The range supported is therefore very wide and covers all uses. We would still recommend a high-performance graphics card, such as the AMD Radeon RX 6900 XT or the Nvidia GeForce RTX 4090, in order to take advantage of native Ultra HD definition and a high number of images. In all cases, the fluidity is there and the image does not suffer from tearing problems (tearing) or jerks (microstuttering).

Reactivity

Editor's Rating: 4 out of 5

7.5ms

The responsiveness of 7.5ms is good for an IPS panel. This value is obtained with an overdrive setting on “level 2”, with a very slight effect of reverse ghosting. With the more aggressive settings (Level 3 and 4), the reverse ghosting is too present. This monitor does no better than the Asus VG28UQ, also Ultra HD at 144 Hz, which drops to 6 ms. The Asus VG279QM with its Full HD 280 Hz panel is flashed at only 4.5 ms, as are the VA Samsung Odyssey G7 27 and 49G9 models. This Omen can still boast of doing a little better than the Asus VG27AQ, the benchmark for Quad HD IPS 144 Hz monitors.

We measured the display delay (input lag) at 17.5ms. This is a little more than the 10 to 11 ms observed on other monitors for gaming, but the lag between the action performed with the keyboard, mouse or controller and its observation on the screen remains very small.

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