The Asus ROG Swift PG27UQ G-SYNC HDR Monitor Review: Gaming With All The Bells and Whistles

Tuesday, October 2nd, 2018 - Monitors, Teknologi

The Asus ROG Swift PG27UQ G-SYNC HDR Monitor Review: Gaming With All The Bells and Whistles

Delayed past its original late 2017 timeframe, let alone the April and May estimates, NVIDIA’s G-Sync HDR technology finally arrived over the last couple months courtesy of Asus’ ROG Swift PG27UQ and Acer’s Predator X27. First shown at Computex 2017 as prototypes, the 27-inch displays bring what are arguably the most desired and visible aspects of modern gaming monitors: ultra high resolution (4K), high refresh rates (144Hz), and variable refresh rate technology (G-Sync), all in a reasonably-sized quality panel (27-inch IPS-type). In addition to that, of course, are the various HDR-related capabilities with brightness and color gamut.

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Individually, these features are just some of the many modern display technologies, but where resolution and refresh rate (and also input latency) are core to PC gaming, those elements typically work as tradeoffs, with 1440p/144Hz being a notable middle ground. So by the basic 4K/144Hz standard, we have not yet had a true ultra-premium gaming monitor. But today, we look at one such beast with the Asus ROG Swift PG27UQ.

ASUS ROG Swift PG27UQ G-SYNC HDR Monitor Specifications
 ROG Swift PG27UQ
Panel27" IPS (AHVA)
Resolution3840 × 2160
Refresh RateOC Mode144Hz (HDR, 4:2:2)144Hz (SDR, 4:2:2)
Standard120Hz (HDR, 4:2:2)
98Hz (HDR, 4:4:4)
120Hz (SDR, 4:4:4)
Over HDMI60Hz
Variable Refresh RateNVIDIA G-Sync HDR module
(actively cooled)
Response Time4 ms (GTG)
BrightnessTypical300 – 0 cd/m²
Peak1000 cd/m² (HDR)
ContrastTypical1000:1
Peak50000:1 (HDR)
BacklightingFALD, 384 zones
Quantum DotYes
HDR StandardHDR10 Support
Viewing Angles178°/178° horizontal/vertical
Pixel Density163 pixels per inch
0.155mm pixel pitch
Color Depth1.07 billion
(8-bit with FRC)
Color GamutsRGB: 100%
Adobe RGB: 99%
 DCI-P3: 97%
Inputs1 × DisplayPort 1.4
1 × HDMI 2.0
Audio3.5-mm audio jack
USB Hub2-port USB 3.0
Stand AdjustmentsTilt: +20°~-5°
Swivel: +0°~+0°
Pivot: +0°~-0°
Height Adjustment: 0~0 mm
Dimensions (with stand)634 x 437-557 x 268 mm
VESA Mount100 × 100
Power ConsumptionIdle: 0.5 W
Peak: 180 W (HDR)
Price$1999

As an ultra-premium gaming monitor of that caliber, the PG27UQ also has an ultra-premium price of $1999. For reasons we’ll soon discuss, the pricing very much represents the panel’s HDR backlighting unit, quantum dot film, and G-Sync HDR module. The full-array local dimming (FALD) backlighting system delivers the brightness and contrast needed for HDR, while the quantum dot film enhances the representable colors to a wider gamut, another HDR element. The new generation G-Sync HDR module deals with the variable refresh implementation, but with HDR, high refresh rate, and high resolution combined, bandwidth constraints require chroma subsampling beyond 98Hz.

In terms of base specifications, the PG27UQ is identical to Acer’s Predator X27 as it uses the same AU Optronics panel, and both monitors are essentially flagships for the G-Sync HDR platform, which includes the curved ultrawide 35-inch models and 4K 65-inch Big Format Gaming Displays (BFGD). Otherwise, there isn’t anything new here that we haven’t already known about in the long run-up.

NVIDIA G-SYNC HDR Monitor Lineup
 Acer
Predator X27
ASUS
ROG Swift PG27UQ
Acer
Predator X35
ASUS
ROG Swift PG35VQ
Acer
Predator BFGD
ASUS
ROG Swift PG65
HP
OMEN X 65 BFGD
Panel27" IPS-type (AHVA)35" VA
1800R curve
65" VA?
Resolution3840 × 21603440 × 1440 (21:9)3840 × 2160
Pixel Density163 PPI103 PPI68 PPI
Max Refresh Rates144Hz
60Hz (HDMI)
200Hz
60Hz (HDMI)
120Hz
60Hz (HDMI)
BacklightingFALD (384 zones)FALD (512 zones)FALD
Quantum DotYes
HDR StandardHDR10 Support
Color GamutsRGB
DCI-P3
Inputs2 × DisplayPort 1.4
1 × HDMI 2.0
DisplayPort 1.4
HDMI 2.0
DisplayPort 1.4
HDMI 2.0
Ethernet
Price$1999TBATBA
AvailabilityPresent2H 2018?

Furthermore, Asus’ ROG Swift PG27UQ also had a rather insightful channel for updates on their ROG forums, so there's some insight into the panel-related firmware troubles they've been having.

How We Got Here: Modern Gaming Monitors and G-Sync HDR

One of the more interesting aspects about the PG27UQ is about its headlining features. The 3840 x 2160 ‘4K’ resolution and 144Hz refresh rate are very much in the mix, and so is the monitor being not just G-Sync but G-Sync HDR. Then there is the HDR aspect, with the IPS-type panel that has localized backlighting and a quantum dot film. G-Sync HDR means both a premium tier of HDR monitor, as well as the new generation of G-Sync that works with high dynamic range gaming.

Altogether, the explanation isn’t very succinct for gamers, especially compared to a non-HDR gaming monitor, and it has all to do with the vast amount of moving parts involved in consumer monitor features, something more thoroughly covered by Brett. For some context, recent display trends include

  • Higher resolutions (e.g. 1440p, 4K, 8K)
  • Higher refresh rates (e.g. 120Hz, 165Hz, 240Hz)
  • Variable refresh rate (VRR) (e.g. G-Sync, FreeSync)
  • Panel size, pixel density, curved and/or ultrawide formats
  • Better panel technology (e.g. VA, IPS-type, OLED)
  • Color bit depth
  • Color compression (e.g. chroma subsampling)
  • Other high dynamic range (HDR) relevant functions for better brightness/contrast ratios and color space coverage, such as local dimming/backlighting and quantum dot films

These features obviously overlap, and much of their recent developments are not so much ‘new’ as they are now ‘reasonably affordable’ to the broader public. For a professional class price, monitors for professional visualization have offered many of the same specifications. And most elements are ultimately limited by PC game support, even uncapped refresh rates and 4K+ resolutions. This is, of course, not including connection standards, design (i.e. bezels and thinness), or gaming monitor features (e.g. ULMB). All these bits, and more, are served up to consumers in a bevy of numbers and brands.

Why does all of this matter? All of these points are points of discussion with the Asus ROG Swift PG27UQ, and especially to G-Sync HDR at the heart of this display. Gaming monitors are moving beyond resolution and refresh rate in their feature sets, especially as games start to support HDR technologies (i.e. HDR10, Dolby Vision, FreeSync 2 tone-mapping). To implement those overlapping features, much more has to do with the panel rather than the VRR hardware/specification, which has become the de facto identifier of a modern gaming monitor. The goal is no longer summarized by ‘faster frames filled with more pixels’ and becomes more difficult to communicate, let alone market, to consumers. And this has much to do with where G-Sync (and VRR) started and what it is now aspiring to be.

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