Between the UltraGear 45GX950A-B and MPG 271QRX, the UltraGear 45GX950A-B comes out ahead in screen size and peak brightness, while the MPG 271QRX wins on refresh rate and usb-c power delivery. Overall, the UltraGear 45GX950A-B scores 83.8 and the MPG 271QRX scores 70.8 on our Mars Score.
Which should you buy?
The UltraGear 45GX950A-B is the clear pick on raw spec strength, leading by 13.0 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the UltraGear 45GX950A-B if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. The biggest gaps in its favor are screen size, peak brightness.
Pick the MPG 271QRX if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. Its strongest claims are refresh rate, usb-c power delivery, dci-p3 coverage, among others.
Both ship with comparable response time (gtg), g-sync, freesync, so those specs don't separate the two — focus on the differences below.
Bottom line: the UltraGear 45GX950A-B is the safer default. The other model is the right choice only when its specific advantages line up with your priorities.
Why LG - UltraGear 45GX950A-B wins
- ▲Screen size — 66.67% more. 45 " vs 27 ".
- ▲Peak brightness — 30.00% more. 1300 nits vs 1000 nits.
Why MSI - MPG 271QRX wins
- ▲Refresh rate — 118.18% more. 360 Hz vs 165 Hz.
- ▲USB-C Power Delivery — 8.89% more. 98 W vs 90 W.
- ▲DCI-P3 coverage — 0.51% more. 99 % vs 98.5 %.
- ▲Panel type: QD-OLED (vs OLED).
Spec comparison
Panel
| Spec | LG - UltraGear 45GX950A-B | MSI - MPG 271QRX |
|---|---|---|
| Screen sizeⓘ | 45 "lead | 27 " |
| Panel typeⓘ | OLED | QD-OLEDlead |
| Resolutionⓘ | 5Klead | 1440p |
| Aspect ratioⓘ | 21:9 | 16:9 |
| Curvedⓘ | truelead | false |
Performance
| Spec | LG - UltraGear 45GX950A-B | MSI - MPG 271QRX |
|---|---|---|
| Refresh rateⓘ | 165 Hz | 360 Hzlead |
| Response time (GtG)ⓘ | 0.03 ms | 0.03 ms |
| Peak brightnessⓘ | 1300 nitslead | 1000 nits |
| DCI-P3 coverageⓘ | 98.5 % | 99 %lead |
| HDRⓘ | true | true |
| G-Syncⓘ | true | true |
| FreeSyncⓘ | true | true |
Connectivity
| Spec | LG - UltraGear 45GX950A-B | MSI - MPG 271QRX |
|---|---|---|
| HDMI ports | 2 | 2 |
| DisplayPort ports | 1 | 1 |
| USB-C input | true | true |
| USB-C Power Deliveryⓘ | 90 W | 98 Wlead |
| KVM | true | true |
Frequently asked
Which has higher refresh rate, UltraGear 45GX950A-B or MPG 271QRX?+
MPG 271QRX refreshes at 360Hz vs 165Hz.
Which has faster response time, UltraGear 45GX950A-B or MPG 271QRX?+
MPG 271QRX responds in 0.03ms vs 0.03ms.
Does UltraGear 45GX950A-B or MPG 271QRX have USB-C with power delivery?+
Both offer USB-C PD — 90W on UltraGear 45GX950A-B, 98W on MPG 271QRX.
Spec-level deep dives
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