Consumercarts is reader-supported. Learn more
AOC 27G4X vs Cooler Master GM27-FQS: Comparison
AOC 27G4X vs Cooler Master GM27-FQS refresh rate compared
Start with refresh rate, because it is the widest measured gap between them: AOC 27G4X 180 Hz against Cooler Master GM27-FQS 165 Hz, 8% in favour of AOC 27G4X. Measured rather than claimed: in Australian Energy Rating: Active standby power (W), Australian Energy Rating label the AOC 27G4X returns 0.24 against 0.31, a 29% lead. Vrr standard is not the same on both, G-Sync Compatible on the AOC 27G4X versus FreeSync Premium on the Cooler Master GM27-FQS. There is a split on dci-p3 coverage as well, 95.5 % on the AOC 27G4X versus 90 % on the Cooler Master GM27-FQS.
Which should you buy, AOC 27G4X or Cooler Master GM27-FQS?
Buy the AOC 27G4X for extreme budget-conscious gamers and first-time QHD high-refresh upgraders, though it is not the pick for buyers wanting real HDR contrast and anyone wanting a fully adjustable stand. The Cooler Master GM27-FQS suits PC builders already invested in Cooler Master's ecosystem and value-focused QHD gaming shoppers, though it is not built for buyers wanting mature, polished OSD software and HDR content enthusiasts. Our rating of the AOC 27G4X (7.6/10): an aggressively priced high-refresh QHD monitor that delivers solid core gaming performance without extra frills. Our rating of the Cooler Master GM27-FQS (7.7/10): A competent first-generation gaming monitor from a trusted PC hardware brand, competitive on specs if not yet on software polish.
What AOC 27G4X and Cooler Master GM27-FQS have in common
Everything else lines up. Panel type, screen size, sdr brightness, hdr support and hdr certification read the same on both, so those are not worth weighing. They match on 8 further specifications as well.
Frequently asked questions
Do the AOC 27G4X and Cooler Master GM27-FQS differ on max refresh rate?
Yes. Max Refresh Rate reads 180 Hz on the AOC 27G4X versus 165 Hz on the Cooler Master GM27-FQS.
Is the HDR Formats the same on the AOC 27G4X and Cooler Master GM27-FQS?
It is. Both are listed at HDR10, so it is not a reason to pick one over the other.
Specs and benchmarks
Panel Type
- AOC 27G4X
- IPS
- Cooler Master GM27-FQS
- IPS
Brand
- AOC 27G4X
- AOC
- Cooler Master GM27-FQS
- Cooler Master
Model Number
- AOC 27G4X
- 27G4X
- Cooler Master GM27-FQS
- GM27-FQS
Screen Size
- AOC 27G4X
- 27 in
- Cooler Master GM27-FQS
- 27 in
Resolution
- AOC 27G4X
- 1920 x 1080 (Full HD)
- Cooler Master GM27-FQS
- 2560 x 1440 (QHD)
Panel Technology
- AOC 27G4X
- IPS
- Cooler Master GM27-FQS
- IPS
Aspect Ratio
- AOC 27G4X
- 16:9
- Cooler Master GM27-FQS
- 16:9
Refresh Rate
- AOC 27G4X
- 180 HzBest
- Cooler Master GM27-FQS
- 165 Hz-8%
Adaptive Sync
- AOC 27G4X
- Adaptive-Sync, NVIDIA G-Sync Compatible
- Cooler Master GM27-FQS
- AMD FreeSync Premium, G-Sync Compatible
HDR Support
- AOC 27G4X
- Yes
- Cooler Master GM27-FQS
- Yes
Curved
- AOC 27G4X
- No
- Cooler Master GM27-FQS
- No
Native Resolution
- AOC 27G4X
- 1920x1080
- Cooler Master GM27-FQS
- 2560x1440
Screen Curvature
- AOC 27G4X
- Flat
- Cooler Master GM27-FQS
- Flat
Max Refresh Rate
- AOC 27G4X
- 180 HzBest
- Cooler Master GM27-FQS
- 165 Hz-8%
Response Time MPRT
- AOC 27G4X
- 0.5 msBest
- Cooler Master GM27-FQS
- 1 ms
VRR Standard
- AOC 27G4X
- G-Sync Compatible
- Cooler Master GM27-FQS
- FreeSync Premium
HDR Certification
- AOC 27G4X
- HDR10 signal only
- Cooler Master GM27-FQS
- HDR10 signal only
SDR Brightness
- AOC 27G4X
- 300 nits
- Cooler Master GM27-FQS
- 300 nits
Native Contrast Ratio
- AOC 27G4X
- 1000:1
- Cooler Master GM27-FQS
- 1000:1
DCI-P3 Coverage
- AOC 27G4X
- 95.5 %
- Cooler Master GM27-FQS
- 90 %
HDMI Version
- AOC 27G4X
- 2.0
- Cooler Master GM27-FQS
- 2.0
Height Adjustment Range
- AOC 27G4X
- 130 mm
- Cooler Master GM27-FQS
- 110 mmBest
Pivot To Portrait
- AOC 27G4X
- Yes
- Cooler Master GM27-FQS
- Yes
VESA Mount Pattern
- AOC 27G4X
- 100x100
- Cooler Master GM27-FQS
- 75x75
Series
- AOC 27G4X
- AOC Gaming 27G4X
- Cooler Master GM27-FQS
- Cooler Master Gaming GM27-FQS
Color Gamut
- AOC 27G4X
- 128.3% sRGB, 95.5% DCI-P3
- Cooler Master GM27-FQS
- 90% DCI-P3
HDR Formats
- AOC 27G4X
- HDR10
- Cooler Master GM27-FQS
- HDR10
Benchmarks
- Other Published Benchmarks
Australian Energy Rating: Active standby power (W), Australian Energy Rating label
- AOC 27G4X
- 0.24Best
- Cooler Master GM27-FQS
- 0.31-29%
Energy Rating (GEMS) registered computer monitors, data.gov.au, retrieved 23 Sept 2026. Lower is better.
Energy use declared under Australia's energy label scheme.
Australian Energy Rating: Labelled energy consumption (kWh/yr), Australian Energy Rating label
- AOC 27G4X
- 102Best
- Cooler Master GM27-FQS
- 113-11%
Energy Rating (GEMS) registered computer monitors, data.gov.au, retrieved 23 Sept 2026. Lower is better.
Energy use declared under Australia's energy label scheme.
Energy Rating data, Commonwealth of Australia (Department of Climate Change, Energy, the Environment and Water), via data.gov.au, licensed CC BY 3.0 AU (creativecommons.org/licenses/by/3.0/au/).
Which one should you pick?
Choose AOC 27G4X if you want the higher screen size (27 in vs 27 in), the higher refresh rate (180 Hz vs 165 Hz) and the higher max refresh rate (180 Hz vs 165 Hz).
Choose Cooler Master GM27-FQS if you already have it on hand or find it at a lower price.
Verdict
AOC 27G4X
7.6 / 10 Expert Rating
An aggressively priced high-refresh QHD monitor that delivers solid core gaming performance without extra frills.
Cooler Master GM27-FQS
7.7 / 10 Expert Rating
A competent first-generation gaming monitor from a trusted PC hardware brand, competitive on specs if not yet on software polish.