MONITORGARAGE

Tested by IMartz

Gigabyte G27Q3

A 27-inch, 1440p, 320 Hz IPS with very good colours for its price. On the tested unit, poor brightness uniformity and colour balance that drifts during use undermine an otherwise attractive specification.

PanelIPS

Gigabyte G27Q3
See test results ↓

IMartz verdict

Pros

  • Very good colours for the price.
  • An appreciably smooth gaming experience at 320 Hz.
  • Strong specifications for the price and an adjustable stand.

Things to consider

  • Very poor brightness uniformity on the tested unit.
  • Colour balance drifted noticeably after a short period of use.
  • Image retention during the UFO test and a plasticky-feeling stand.

A good fit if…

  • You want very smooth motion and good colours on a tight budget.
  • You prioritise PC gaming performance over build quality.

Consider another option if…

  • You need even brightness and stable colour for image work.
  • You want HDR with deep blacks or VRR on PS5.

Measurements and specifications

IMartz test results. See each section for the measurement conditions.

Display and format

General specifications
Panel
IPS
Resolution
2560 x 1440
Refresh rate
320 Hz
Screen size
27″
Aspect ratio
16:9
Curvature
Flat
Screen finish
Light matte
Speakers
No

SDR performance

Color, brillo, contraste y comportamiento básico fuera de HDR.

SDR assessmentAcceptable
Coverage
DCI-P3
98.6 %
Adobe RGB
93.9 %
Accuracy and calibration
DCI-P3 accuracy
1.51
Test note · DCI-P3 accuracy

Initial calibration measures well, but after a short period of use I observed a substantial shift in colour balance. This unit appears unstable in that respect; these initial measurements do not guarantee that it will maintain the same result during use.

sRGB mode
Yes
sRGB accuracy
0.99
Brightness uniformity
Poor
Colour uniformity
Good
Brightness and contrast
SDR brightness
444 nits
Test note · SDR brightness

Brightness uniformity is very poor on this unit: the largest difference between areas reaches 23% at 100% white and 27% at 50% grey.

Native contrast
1021:1

HDR performance

Brillo pico, volumen de color, EOTF y experiencia HDR real.

HDR assessmentLimited
HDR brightness and color
HDR brightness
491 nits
BT.2020 coverage
78.87 %
BT.2020 colour volume
70.376 %
Accuracy and tracking
ΔE ITP HDR
2.81
EOTF tracking
Raises shadow levels
Test note · EOTF tracking

The measured curve raises shadows: black level is around 0.49 nits and dark steps sit above the reference. Midtones also show small upward deviations, and brightness plateaus near 491 nits at the upper end. The wide colour gamut is good, but panel contrast limits black depth and HDR impact.

Response time and PC gaming

Overdrive, tiempo de respuesta, overshoot, VRR e input lag.

Gaming ratingFast
Response measurements
Response time
4.37 ms
Test note · Response time

I observed image retention after running the UFO test for a while. At 120 Hz, disabling overdrive avoids the overshoot seen with Smart OD and Picture Quality, at the cost of slower transitions. Off is also a conservative choice at 60 Hz.

Overshoot
1.6 RGB
Input lag
1.5 ms
Features and settings
VRR PC
FreeSync Premium
MBR / Strobing
No MPRT or similar mode was found.
Recommended overdrive
Smart OD at 320 Hz; Off at 120 and 60 Hz

PS5 and consoles

Compatibilidad con VRR, ALLM y resoluciones permitidas.

PS5 assessmentLimited
Compatibility
VRR PS5
No
ALLM PS5
No
PS5 resolutions
1440p 120 Hz
4K 60 Hz
PS5 notes
Supports 4K at 60 Hz and 1440p at 120 Hz, including HDR. It does not support VRR or ALLM. At 1440p and 120 Hz, HDR uses YUV 4:2:2.

Connectivity

Entradas de vídeo, USB-C, KVM, hub USB y extras de conexión.

Video
HDMI
2 × HDMI 2.0
DisplayPort
1 × DisplayPort 1.4
Additional connections
Audio output
Yes
Other ports
USB 2.0 dedicated to firmware updates.

Stand, mounting and extras

Calidad física, ergonomía, VESA y detalles destacables.

RatingFair
Ergonomics and mounting
Stand adjustments
Yes
Stand quality
Fair
VESA
100 x 100 mm
Extras
Notable extras
It has rear RGB lighting and a simple menu. The stand is adjustable, but feels plasticky to me: it is not the worst I have tested, though there is plenty of room for improvement. Gigabyte specifies 130 mm of height adjustment, −5° to +20° tilt, ±160° swivel and ±90° pivot. DisplayPort supports 320 Hz; the advertised HDMI maximum is 144 Hz. My impression is that quality control receives less attention in these price ranges, but this is an opinion based on this experience, not something I can confirm about the brand or the whole range.

Alternatives

Other options, each with its own specifications and test results.

KTC H27E6

Alternative model

KTC H27E6

Tested by IMartz

1440p · 320 Hz · IPS

€249.99 Guide priceAmazon reported no stock at the last check. Reference reviewed on 15/09/2026 11:20 CEST. Source: pccomponentes.com. Confirm the final price and availability at the retailer.
AmazonCheck price
More stores
AliExpressCheck pricePcComponentesCheck price
View specificationsOfficial specifications

Measurements may vary with the unit, firmware and settings. Some links are affiliate links that help support this website at no extra cost to you.

Back to top ↑
Open original file ↗︎

Language and stores

Choose your language and where to shop. We save your preferences in this browser.

Language

Stores and currency

Changing markets does not convert prices. You can adjust your budget in the selected currency.