LG - UltraGear 27GP950-B vs ASUS - ROG Swift PG34WCDM
Between the UltraGear 27GP950-B and ROG Swift PG34WCDM, the UltraGear 27GP950-B comes out ahead in several specs, while the ROG Swift PG34WCDM wins on peak brightness and response time (gtg). Overall, the UltraGear 27GP950-B scores 78.2 and the ROG Swift PG34WCDM scores 75.1 on our Mars Score.
Which should you buy?
The UltraGear 27GP950-B edges ahead on the Mars Score (78.2 vs 75.1), but the 3.1-point gap is small enough that the right pick comes down to which spec advantages matter to you.
The UltraGear 27GP950-B doesn't pull ahead on any single popular-comparison spec — its strengths sit in the spec table groups rather than the headline advantages.
Pick the ROG Swift PG34WCDM 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 peak brightness, response time (gtg), refresh rate, among others.
Both ship with comparable g-sync, freesync, so those specs don't separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity tells you both are well-rounded; the differences are about trade-offs, not quality.
Why LG - UltraGear 27GP950-B wins
- No decisive advantages.
Why ASUS - ROG Swift PG34WCDM wins
- ▲Peak brightness — 116.67% more. 1300 nits vs 600 nits.
- ▲Response time (GtG) — 97.00% less. 0.03 ms vs 1 ms.
- ▲Refresh rate — 50.00% more. 240 Hz vs 160 Hz.
- ▲Screen size — 25.93% more. 34 " vs 27 ".
- ▲DCI-P3 coverage — 1.02% more. 99 % vs 98 %.
- ▲Panel type: QD-OLED (vs IPS).
Spec comparison
Panel
| Spec | LG - UltraGear 27GP950-B | ASUS - ROG Swift PG34WCDM |
|---|---|---|
| Screen sizeⓘ | 27 " | 34 "lead |
| Panel typeⓘ | IPS | QD-OLEDlead |
| Resolutionⓘ | 4Klead | 1440p |
| Aspect ratioⓘ | 16:9 | 21:9 |
| Curvedⓘ | false | truelead |
Performance
| Spec | LG - UltraGear 27GP950-B | ASUS - ROG Swift PG34WCDM |
|---|---|---|
| Refresh rateⓘ | 160 Hz | 240 Hzlead |
| Response time (GtG)ⓘ | 1 ms | 0.03 mslead |
| Peak brightnessⓘ | 600 nits | 1300 nitslead |
| DCI-P3 coverageⓘ | 98 % | 99 %lead |
| HDRⓘ | true | true |
| G-Syncⓘ | true | true |
| FreeSyncⓘ | true | true |
Connectivity
| Spec | LG - UltraGear 27GP950-B | ASUS - ROG Swift PG34WCDM |
|---|---|---|
| HDMI ports | 2 | 2 |
| DisplayPort ports | 1 | 1 |
| USB-C input | false | truelead |
| USB-C Power Deliveryⓘ | — | 90 W |
| KVM | false | truelead |
Frequently asked
Which has higher refresh rate, UltraGear 27GP950-B or ROG Swift PG34WCDM?+
ROG Swift PG34WCDM refreshes at 240Hz vs 160Hz.
Which has faster response time, UltraGear 27GP950-B or ROG Swift PG34WCDM?+
ROG Swift PG34WCDM responds in 0.03ms vs 1ms.
Does UltraGear 27GP950-B or ROG Swift PG34WCDM have USB-C with power delivery?+
ROG Swift PG34WCDM offers USB-C with 90W power delivery.
Spec-level deep dives
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