LG 27GN950-B vs ASUS ROG Strix XG27UQ: Which Monitor is Best?

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lg 27gn950-b vs asus xg27uq
lg 27gn950-b vs asus xg27uq

Whether you’re looking to max out the capabilities of the best GPU the market has to offer or enjoy your favorite online multiplayer’s graphics at their highest resolution, you can maintain the ability to compete at a high level with the use of a 4K 144 Hz monitor

Of course, in order to take full advantage of the resolution and framerate of such displays, you will need the best hardware the industry has to offer. This does not necessarily mean a $1,500 Nvidia RTX 3090, or even a $1,000 AMD Radeon RX 6900 XT, are mandatory, but you will need some serious graphical processing power. At 4K, the CPU and RAM will not make much of a difference in terms of framerate performance, because most of the load of processing game at such high resolutions falls mostly upon the GPU. Still, even small framerate boosts are critical for achieving the desired FPS threshold for competitive multiplayer games, even if they are less hardware-intensive than triple-A titles. 

Even if you have allocated most of your budget into creating a high-end PC build, the excellent prices that the LG 27GN950-B and the ASUS ROG Strix XG27UQ have to offer, make 4K 144 Hz gaming approachable. Considering that these two 27-inch monitors cost about half the price of other 4K 144 Hz variants – as they are priced at just $800 for the LG 27GN950-B, and $1,100 for the ASUS XG27UQ– they are definitely worth the investment. 

Now, you may be wondering: Does the ASUS XG27UQ outperform the LG 27GN950, and by how much? Does it warrant the extra cost?

In this article, we will compare all facets of these two 4K 144Hz monitors, and come to a conclusion on which monitor is better worth your money. 


MonitorLG 27GN950-BASUS ROG Strix XG27UQ
DesignLG 27GN950-BASUS ROG Strix XG27UQ
Screen Size27 inches27 inches
Resolution3840 x 21603840 x 2160
Refresh Rate144 Hz144 Hz
Aspect Ratio1.778:1 (16:9)1.778:1 (16:9)
Panel TypeNano IPSAHVA IPS
Display Area0.93790.8273
Bit Depth8 bits + FRC8 bits + FRC
Colors1.07 billion1.07 billion
Brightness450-600 nits470-540 nits
MPRT/G2G1 ms5 ms

Resolution & Refresh Rate – TIE

The LG 27GN950 and the ASUS ROG Strix XG27UQ both have the highest resolution possible for gaming applications; despite what Nvidia’s marketing department falsely claimed when releasing the GeForce RTX 3090 about its supposed “8K gaming capabilities”.

Indeed, we cannot jump to 8K gaming when even with the release of the flagship GeForce RTX 3090 and the AMD Radeon RX 6900 XT, gaming at 4K has still not reached its full potential. According to benchmarks, neither of these two GPUs can average above over 110-115 FPS at 4K.

That being said, if you own – or are planning to build – a high-end PC with the best hardware money can buy, like a Ryzen 9 5900X/5950X and DDR4 3,800 C14 RAM (though the CPU and RAM play less of a role when it comes to 4K resolutions, as the system will be bottlenecked by the GPU), and don’t mind reducing in-game graphical settings, then a 120-144 FPS average can be achieved and you can make the most of these 4K 144 Hz monitors have to offer.

Do note, that for the LG 27GN950 you will need a DisplayPort connection in order to reach its 144 Hz limit, as HDMI (2.0) will only give you a 60 Hz refresh rate. Respectively, for the ASUS ROG Strix XG27UQ, you will need a GPU that supports Display Stream Compression over a DisplayPort connection, in order to reach its maximum 144 Hz refresh rate. Also, its FreeSync range reaches only up to 120 Hz, since it lacks FreeSync 2 or Premium Pro compatibility. 

Appearance – ASUS ROG Strix XG27UQ


As is the case with most LG gaming monitors, its design is quite plain. It has a V-shaped stand, red accents on the bottom side of its base and behind the screen, as well as an RGB-lit ring around its rear vents. The stand has a hook for cable-management; which is only useful if the cables lead to the right of the monitor. What’s great about the exterior of this monitor, is its four-sided ultra-thin bezel which creates an almost borderless design that is excellent for multi-monitor setups.

On the other hand, the ASUS XG27UQ has a tripod stand that projects a logo onto the desk beneath it; and this projection can be changed via the use of three different replaceable acrylic LED light covers that are included with the purchase (one of which is blank, so you can create a custom design with it). The back side of the monitor has an etched design, with a large ROG Strix logo that is RGB-illuminated and can be customized via ASUS’s Aura Sync software. Perhaps the only downside of the ASUS XG27UQ’s design is its thick bezel, which can get in the way of a seamless multi-monitor setup.

The LG 27GN950 has a thickness of 9.1 inches (23 cm), including the stand, and 2.4 inches (6 cm) for the screen alone. The ASUS ROG Strix XG27UQ has a 10.6-inch (27 cm) thickness with the stand, and a far thicker, than the LG 27GN950, screen of 3.9 inches (10 cm).

Panel/Display – LG 27GN950-B

LG 27GN950-B

The ASUS ROG Strix XG27UQ has an Advanced Hyper-Viewing Angle (AHVA) IPS panel – made by AU Optronics – which differs from regular IPS panels due to its faster response times. Still, this IPS variant does falls behind the Nano-IPS panel of the LG 27GN950 in viewing angles, as the LG 27GN950 has a display area of 93.79% versus the 82.79% of the ASUS LG 27GN950, as well as response times. This Nano-IPS make use of nanoparticles that are applied to the W-LED backlight in order to generate a larger color gamut.

What certain LG 27GN950 units lack, in comparison to the ASUS XG27UQ, is proper black uniformity. Many users report extreme backlight bleeding, especially from the corners of the screen.

In terms of their panels’ color depth, both monitors use Frame Rate Control (FRC) in order to upscale their bit depth of eight bits, to one of 10 bits. FRC uses quick cyclic color-tune switching in order to simulate intermediate color tones, thus simulating a larger color reproduction range. With this 8-bit plus FRC color depth, both monitors can display over 1.07 billion, 30-bit, colors.

Contrast & Brightness – TIE

As is the case with most IPS monitors, these two models suffer when it comes to contrast ratios and peak brightness levels.

The ASUS XG27UQ has a static contrast of 1200:1, and a not-so-great Dynamic Dimming feature, as its screen is edge-lit via eight vertical lighting zones. This results in high levels of blooming and overall terrible uniformity; especially when larger bright objects are on screen. The LG 27GN950 does not fare any better, as it has a 1000:1 contrast ratio and a similar edge-lit dimming feature which can become quite distracting during dark scenes. 

The LG 27GN950 does have slightly better brightness levels of around 420 nits on its SDR, and 700 nits on its HDR (DisplayHDR 600 certified) – though it will not maintain this brightness level if an image stays on screen for too long. The ASUS XG27UQ has a slightly better SDR brightness of around 470 nits, but it suffers in peak brightness, reaching only about 500-540 nits. It only meets the requirements for a DisplayHDR 400 certification. 

All in all, the ASUS ROG Strix XG27UQ has a slightly better contrast ratio, and the LG 27GN950’s has slightly higher brightness levels, so a tie can be called in this category.

Color Range – LG 27GN950-B

LG 27GN950-B

The Nano-IPS technology of the LG 27GN950 give it the edge over its ASUS counterpart, despite them both having a 10-bit color depth. It can cover 135% of the sRGB color space, 88.3% of the Adobe RGB color space, 72.4% of the Rec. 2020 color space, and 98% of the DCI P3 color space. Though not quite on that level, the ASUS XG27UQ still has an impressive color range, covering 125% of the sRGB color space, 85% of the Adobe RGB color space, 90% of the DCI P3 color space, and 70% of the Rec. 2020 color space. Both monitors have great out-of-the-box color accuracy; though the LG 27GN950 is more slightly accurate than the ASUS XG27UQ, both by default and post calibration. 

You can find a calibration profile for the 27GN950 here, and a calibration profile for the XG27UQ here (both of which are provided by RTINGS.com).

Response Time & Input Lag – LG 27GN950-B 

LG 27GN950-B

Despite being 4K 144 Hz monitors with IPS panels, these monitors have impressively low input lag. Both perform almost equally in this regard, with a variably refresh rate (at 60 Hz) latency of 11 ms for the ASUS ROG Strix XG27UQ, and 11.4 ms for the LG 27GN950. If you enable Nvidia Reflex or AMD Anti-Lag with these monitors, the end-to-end input lag you’ll experience will be minimal, so both can be used for competitive gaming, despite their 4K resolution.

Where the two monitors differ, however, are their response times. The LG 27GN950 has a 1 ms Grey-to-Grey response time – meaning exceptionally clear images with little-to-no blur, even for objects darting across the screen. In fact, it performs almost equally as well with its maximum refresh rate, even when operating at 60 Hz. The ASUS XG27UQ also fares well in this regard, though it has a 5 ms MPRT, so it does have slightly more noticeable blur trails. Its response times do suffer at 60 Hz, so you may need to change overdrive settings depending on the framerate.

Ergonomics – ASUS ROG Strix XG27UQ


Like most ASUS monitors, the XG27UQ has a wide array of ergonomic versatility. Its height can by adjusted by up to 120 millimeters, it can pivot clockwise by up to 90 degrees for a portrait orientation, it can swivel in both directions by 40 degrees, and it can tilt forwards by 5 degrees, and backwards by 20 degrees.

The LG 27GN950 can be adjusted in height by 110 mm, it can pivot to the right by 90 degrees, and it can tilt forwards by 5 degrees and backwards by 15 degrees. However, it does lack the ability to swivel in either left or right direction.

Power Consumption– ASUS ROG Strix XG27UQ


The ASUS XG27UQ is a far more power-efficient monitor, as it averages just 44 W of power consumption: consuming 25 W in eco-mode, and a maximum of 90 watts. The LG 27GN950 lacks an eco-mode, averages a power consumption of 65 W (a 47% increase in comparison to the ASUS) and a maximum consumption of 95 watts.

Connectivity – TIE

Both monitors feature similar connectivity: Two USB 3.0 Type-A downstream ports for peripherals, one USB 3.0 Type-B upstream port, two HDMI 2.0 sockets, and one 3.5 mm audio-out jack. The LG 27GN950 has two DisplayPort 1.4 sockets, while the ASUS has only one.

Features – TIE

Finally, let’s compare the software and technology features that each monitor includes with its purchase.

The features they have in common are: Flick-free technology, a Low Blue Light filter, VESA DSC compatibility, a crosshair overlay, a black stabilizer (which makes objects more visible in dark scenes), preset color modes for different imagery/game modes (named GameVisual for ASUS and Game Mode for LG) and adaptive sync technology; both in the form of AMD’s FreeSync and Nvidia’s G-Sync.

The ASUS ROG Strix XG27UQ includes ELMB (Extreme Low Motion Blur), Display Widget (software that allows you to access the monitor’s gaming features – like the crosshair or timer – via the use of hotkeys rather than the OSD menu), GameFast Input technology (lowers inherent input lag), and GamePlus (an FPS counter and a display alignment helper for multiple monitor setups).

On the other hand, the LG 27GN950 has Dynamic Action Sync (a mode that minimizes display lag), and Sphere Lighting 2.0 (technology which synchronizes the monitor’s backlight with in-game content).


LG 27GN950-B

Usually, for monitor comparisons, we would create separate categories and declare a winner for each, depending on their most optimal mode of utility. However, for this case, we seem to have a clear winner across the board. If you don’t value the external appearance of a monitor, or don’t care much for the ASUS ROG Strix’s looks, the LG 27GN950-B is the better monitor, no matter what its intended use will be. 

Not only does this monitor feature a wider color gamut, better response times, higher brightness levels, and a HDR 600 certification, but it also costs $300 less than its ASUS XG27UQ competition. There is no application – whether it be competitive gaming, triple-A title gaming, general use, or even console gaming (though consoles can only reach 60 FPS at 4K, and may be inconsistent at that) – in which the LG 27GN950 does not reign supreme. 

The ASUS ROG Strix XG27UQ does have a more appealing exterior, a 40-degree swivel range, and better power consumption, but nothing nearly enough to justify its $300 price difference. 

If you can find the ASUS XG27UQ on sale, an argument can be made in its favor, but all things equal, the LG 27GN950 is simply the better monitor.

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