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AOC U27G4R reviews
Brand: AOC More AOC monitors reviews →
Historic — Current UK availability not confirmed. Reviews and specifications remain available. Browse current products →
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Compare AOC U27G4R reviews, specifications and available UK retailer offers. Check the details for this exact model and follow the original critics’ findings.
Manufacturer codeU27G4R
The product, explained
About the AOC U27G4R
AOC U27G4R is listed in the computer monitors category. The recorded specifications include display diagonal: 68.6 cm (27"); display resolution: 3840 x 2160 pixels; panel type: Fast IPS; maximum refresh rate: 320 Hz. This entry covers manufacturer code U27G4R. Specifications relate to this exact source record; other editions or packages may differ.
The 68.6 cm (27") display is specified at 3840 x 2160 pixels. Consider these together: a larger screen provides more physical space, while resolution determines the number of pixels available. Neither specification establishes brightness, colour accuracy or motion quality.
The listed maximum refresh rate is 320 Hz. To use it, the source device, cable, resolution and input must all support the intended mode. Refresh rate is separate from response time and input lag.
- Screen size
- 68.6 cm (27")
- Screen resolution
- 3840 x 2160 pixels
- Panel type
- Fast IPS
- Maximum refresh rate
- 320 Hz
- Response time
- 1 ms
- Display brightness (typical)
- 400 cd/m²
Make it work for you
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Independent perspectives
Expert reviews 2
Independent ratings, converted to the same five-point scale. Each card links to the original review and identifies the available evidence.
Basic Tutorials
4.50 / 5Original rating: 90 / 100
Review covers AOC U27G4R. The verified product-data labels bind this public model name to code U27G4R, and the original publisher article independently supplies the editorial score. This is not proof that the supplier supplied this review URL, or that the reviewer tested this colour or included accessories.
Read the full review ↗Checked 15 Nov 2026
KitGuru
4.25 / 5Original rating: 8.5 / 10
Review covers AOC U27G4R. The verified product-data labels bind this public model name to code U27G4R, and the original publisher article independently supplies the editorial score. This is not proof that the supplier supplied this review URL, or that the reviewer tested this colour or included accessories.
Read the full review ↗Checked 9 Nov 2026
More expert reviews
TechTesters
AOC Gaming U27G4R Review
By Stephan. Read the publisher’s assessment of this model.
Read the full review ↗Review link · Not included in the COR Score
Independent reviews, made comparable
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Read our scoring methodology →Scale conversion · example
8/ 104.00/ 5
An illustration of conversion, not this product’s rating.
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Show the average to two decimal places after three distinct critics. Otherwise display tbd, keeping individual reviews visible.
Find the best fit by considering the score alongside the critic count, review dates, tested version and the strengths that matter to you. Eligible model-level reviews identify the tested configuration. Reviews of different hardware are shown separately and do not enter this product’s COR Score.
Know exactly what you’re buying
AOC U27G4R specifications
Manufacturer code: U27G4R · Icecat product 129871070 · Checked 17 Sep 2026. Specifications belong to this exact model.
Key specifications
The main features to compare for this exact model. Missing details are not assumed.
| Screen size | 68.6 cm (27") |
|---|---|
| Screen resolution | 3840 x 2160 pixels |
| Panel type | Fast IPS |
| Maximum refresh rate | 320 Hz |
| Response time | 1 ms |
| Display brightness (typical) | 400 cd/m² |
| High Dynamic Range (HDR) supported | Yes |
| HDMI ports | 2 |
| DisplayPort connections | 1 |
More product specifications
Open a section for the details that matter to you.
Audio & listening4 details
| Digital horizontal frequency | 30 - 360 kHz |
|---|---|
| Digital vertical frequency | 48 - 320 Hz |
| Headphone out | Yes |
| Headphone outputs | 1 |
Display15 details
| Display technology | LED |
|---|---|
| Touchscreen | No |
| Anti-glare screen | Yes |
| Screen shape | Flat |
| Contrast ratio (typical) | 1000:1 |
| Contrast ratio (dynamic) | 80000000:1 |
| Viewing angle, horizontal | 178° |
| Viewing angle, vertical | 178° |
| Display number of colours | 16.7 million colours |
| Display diagonal (metric) | 68.6 cm |
| High Dynamic Range (HDR) technology | DisplayHDR 400 |
| Colour gamut standard | Adobe RGB, DCI-P3, sRGB |
| On Screen Display (OSD) | Yes |
| On Screen Display (OSD) languages | Simplified Chinese, Traditional Chinese, Czech, Dutch, English, Finnish, French, German, Italian, Japanese, Korean, Croatian, Polish, Portuguese, Russian, Spanish, Swedish, Turkish, Ukrainian |
| Native refresh rate | 60 Hz |
Processor, memory & storage1 detail
| Frameless design | Yes |
|---|
Connections & wireless12 details
| Built-in USB hub | Yes |
|---|---|
| USB hub version | 3.2 Gen 1 (3.1 Gen 1) |
| USB upstream port type | USB Type-B |
| Number of upstream ports | 1 |
| USB Type-A downstream ports quantity | 4 |
| HDMI | Yes |
| HDMI version | 2.1 |
| DisplayPort version | 1.4 |
| Headphone connectivity | 3.5 mm |
| Panel mounting interface | 100 x 100 mm |
| DisplayPort cable length | 1.8 m |
| HDMI cable length | 1.8 m |
Power & battery9 details
| Energy efficiency class (SDR) | F |
|---|---|
| Energy efficiency class (HDR) | G |
| Energy consumption (SDR) per 1000 hours | 25 kWh |
| Energy consumption (HDR) per 1000 hours | 50 kWh |
| Power consumption (typical) | 34 W |
| Power consumption (standby) | 0.5 W |
| Power consumption (off) | 0.3 W |
| Power supply type | Internal |
| Energy efficiency scale | A to G |
Controls & features2 details
| Shadow control | Yes |
|---|---|
| Motion blur reduction | Yes |
Design & dimensions13 details
| Product colour | Black, Red |
|---|---|
| Front bezel colour | Black |
| VESA mounting | Yes |
| Height adjustment | Yes |
| Adjustable height (max) | 13 cm |
| Width (with stand) | 613.9 mm |
| Depth (with stand) | 227.6 mm |
| Height (with stand) | 516 mm |
| Weight (with stand) | 6.35 kg |
| Width (without stand) | 613.9 mm |
| Depth (without stand) | 51.3 mm |
| Height (without stand) | 366.3 mm |
| Weight (without stand) | 4.41 kg |
Software & compatibility3 details
| Brand specific technologies | Crosshair |
|---|---|
| Compliance certificates | CE |
| Certification | WEEE,REACH compliant,RoHs compliant,CB,TUV-Bauart-Mark,ISO 9241-307,EAC,FCC |
Further product details33 details
| HD type | 4K Ultra HD |
|---|---|
| Native aspect ratio | 16:9 |
| LED backlight | Yes |
| Backlight type | W-LED |
| Response time measurement type | GTG (Gray to Gray) |
| Response time (MPRT) | 0.3 ms |
| Pixel density | 163 ppi |
| sRGB coverage (typical) | 124.7% |
| Adobe RGB coverage | 93.4% |
| DCI-P3 coverage | 95.9% |
| VESA Adaptive Sync support | Yes |
| Flicker-free technology | Yes |
| Low Blue Light technology | Yes |
| Market positioning | Gaming |
| Detachable stand | Yes |
| HDCP | Yes |
| HDCP version | 1.4/2.2 |
| Cable lock slot | Yes |
| Cable lock slot type | Kensington |
| Pivot | Yes |
| Pivot angle | -90 - 90° |
| Swivelling | Yes |
| Swivel angle range | 30 - 30° |
| Tilt adjustment | Yes |
| Tilt angle range | 3.5 - 21.5° |
| Picture-in-Picture | Yes |
| Number of OSD languages | 19 |
| Doesn't contain | Mercury, PVC/BFR |
| Low input lag | Yes |
| FPS counter | Yes |
| Dial point | Yes |
| Local dimming | Yes |
| Bezel thickness type | Frameless |
Packaging & supplied accessories6 details
| Package width | 825 mm |
|---|---|
| Package depth | 481 mm |
| Package height | 162 mm |
| Package weight | 9.95 kg |
| Cables included | AC, HDMI, DisplayPort |
| Warranty period | 3 year(s) |
Specifications describe the supplied product data, not measured review results. Battery life, range and performance figures are source claims and can vary with use.
Build your shortlist
Compare other monitors
More products in this category. Compare their exact features, original reviews and available offers alongside the AOC U27G4R.
| Product | Brand | Shown model | COR Score |
|---|---|---|---|
| Acer Vero B248YG 23.8" Full HD 16:9 ZeroFrame IPS 120Hz 4ms FreeSync USB-Hub Computer Monitor reviews → | Acer | UM.QB8EE.G0460.5 cm (23.8") · Black | tbd0 critic reviews · Available after 3 |
| ASUS VG27WQ5F reviews → | ASUS | 90LM0DB0-B01O7168.6 cm (27") · Black | tbd0 critic reviews · Available after 3 |
| LG 27GM950B-B reviews → | LG | 27GM950B-B.AEK68.6 cm (27") · Black | tbd0 critic reviews · Available after 3 |
| LG 27U731SB-W reviews → | LG | 27U731SB-W.AEK68.6 cm (27") · White | tbd0 critic reviews · Available after 3 |
Your questions, answered
AOC U27G4R FAQs
How many expert reviews are available for AOC U27G4R?
This page currently includes 2 scored critic reviews. Each publisher counts once. Follow the review cards for the original verdict and the version that was tested.
What is the COR Score for AOC U27G4R?
The COR Score is tbd. We publish a combined score only after at least three distinct critics have usable ratings. Any individual reviews already available remain visible.
Which exact version does this page cover?
This page identifies AOC U27G4R using manufacturer code U27G4R. Check that reference, configuration and supplied accessories against the retailer listing. Related-version reviews are labelled separately and do not contribute to this version’s score.
What is the listed display diagonal for AOC U27G4R?
The source specification records display diagonal as 68.6 cm (27"). This is a specification, not an independent performance measurement. Check the exact model and the original critic reviews for real-world results.
What is the listed display resolution for AOC U27G4R?
The source specification records display resolution as 3840 x 2160 pixels. This is a specification, not an independent performance measurement. Check the exact model and the original critic reviews for real-world results.
Where can I compare prices for AOC U27G4R?
Use the retailer-offer section on this page for available matched offers. If no offer is shown, we do not currently have a verified price. Confirm model, stock, delivery and the final total at the retailer; coverage does not include every seller.
Does a higher refresh rate make every app better?
It can make movement feel smoother, but benefits depend on the computer, connection and the activity.
Can I use a USB-C monitor with any laptop?
Not necessarily. Check the laptop port supports the required display mode and charging level.
Is a curved monitor always more immersive?
It depends on size, desk distance and use. Try it for text and multi-window work, not only video.
How should I use the specifications alongside reviews?
Use the recorded features to check compatibility and make a shortlist. Read the original reviews for measured performance, everyday use and the tested configuration.
Understand your options
Monitor buying guides
Explore one topic in depth before making your shortlist.
Start with the complete buying guide →Monitor resolution and size: finding a comfortable matchResolution counts pixels; screen size determines how densely they are packed. The same resolution can look spacious on one diagonal and coarse on another, so compare the combination rather than either number alone.Monitor refresh rates: 60Hz, 120Hz, 144Hz and beyondChoose refresh rate from actual frame rate, motion needs, connection limits and image-quality priorities.IPS, VA and OLED monitors: choosing a panel typeChoose panel behaviour around text, contrast, motion, viewing position and static desktop use.USB-C monitors as laptop docksCheck charging power, video mode, hub bandwidth, network and downstream ports as one system.