Best Buy via eBay has
27" AOC Q27G40XMN 1440p QHD 180Hz VA Mini-LED Gaming Monitor (Black) on sale for
$199.99 (discount shown in cart or by clicking 'See price' link).
Shipping is free.
Best Buy also has
27" AOC Q27G40XMN 1440p QHD 180Hz VA Mini-LED Gaming Monitor (Black) on sale for
$199.99.
Shipping is free or select free store pickup where stock permits.
- Note: Availability for pickup may vary by location.
Thanks to Deal Hunter
tDames for sharing this deal.
Specs:- Resolution: 2560 x 1440
- Refresh Rate: 180Hz
- Response Time: 1ms
- Panel: Fast VA Mini-LED
- Brightness: 1200 nits
- VRR: G-SYNC Compatible (NVIDIA Adaptive Sync)
- VESA Wall Mount Standard: 100mm x 100mm
- Ports:
- 1x 3.5mm Headphone Jack
- 1x DisplayPort 1.4
- 1x HDMI 2.0
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I'm on a G9 49" OLED personally. So we're in two different universes, display-wise.
FWIW, here's the RTings review. https://www.rtings.com/monitor/re.../q27g40xmn
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This is what it gave me for my 9070 xt
PART 1 — Fix SDR First (Turn HDR OFF)
Yes — disable HDR in Windows for now.
Step 1 — Disable Windows HDR
In Windows:
- Right-click Desktop
- Display Settings
- Click the AOC monitor (make sure you're adjusting the correct display)
- Scroll to HDR
- Toggle HDR OFF
Now we're in clean SDR mode.PART 2 — Fix Monitor (OSD Settings on the AOC)
All of this is done using the monitor's physical joystick/button.
Open the monitor menu → this is the OSD (On-Screen Display).
Step 2 — Set Correct Picture Mode (Monitor OSD)
In the OSD:
Game Setting / Picture Mode → choose:Do NOT use:
- FPS
- RTS
- sRGB
- HDR modes (we disabled HDR)
Those lock or distort gamma and color.Step 3 — Turn Local Dimming OFF (for SDR)
Still inside OSD:
Picture → Local Dimming → OFF
Mini-LED local dimming in SDR can cause:
- Raised blacks
- Gamma shifts
- Washed midtones
We only use it in HDR.Step 4 — Set Gamma Properly
OSD → Gamma:
- Try Gamma 2.2 first
- If blacks still look grey → try 2.4
2.4 gives deeper perceived contrast in dim rooms.Step 5 — Fix Color Temperature
OSD → Color Temp → User
Set approximately:
- Red: 50–55
- Green: 50–55
- Blue: 45–48
This reduces the cool/blue wash VA panels often ship with.Step 6 — Brightness & Contrast
In SDR:
- Brightness: 35–50 (adjust for your room)
- Contrast: Leave default (usually 50)
Do NOT max brightness in SDR — it flattens contrast perception.PART 3 — AMD Adrenalin Settings (Very Important)
Now we make sure Windows/GPU aren't washing things out.
Open AMD Adrenalin → Settings (gear icon) → Display
Select the AOC monitor.
Check:
Pixel Format
Set to:If it's on Limited, colors will look grey and washed.
Custom Color (Optional but Helpful)
Enable Custom Color and try:
- Saturation: 105–110
- Contrast: 100
- Brightness: 0
Do NOT go crazy here. Small changes only.At this point, in SDR, the AOC should look:
- Deeper blacks than your Omen
- Slightly less "pop" (IPS has more perceived vibrancy)
- More contrast overall
If it still looks flat in SDR after this, we dig deeper.PART 4 — Now Let's Set Up HDR Correctly
Only after SDR looks good.
Step 1 — Turn HDR Back On in Windows
Windows → Display → Select AOC → HDR → ON
Step 2 — Run Windows HDR Calibration Tool
Search in Windows:Follow the 3 brightness screens carefully:
- Set minimum so black is just barely visible
- Set peak brightness to where logo just disappears
- Adjust color saturation slider conservatively
This step is CRITICAL.Step 3 — Monitor OSD in HDR Mode
When HDR is active:
OSD → HDR Mode → choose:Then:
OSD → Local Dimming:Avoid Strong — it causes blooming and desaturation on this model.
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