LG - UltraGear 27GP950-B vs ASUS - ROG Swift PG34WCDM
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | LG - UltraGear 27GP950-B | ASUS - ROG Swift PG34WCDM |
|---|---|---|
| Peak brightness | 600 nits | 1300 nits |
| Response time (GtG) | 1 ms | 0.03 ms |
| Refresh rate | 160 Hz | 240 Hz |
| Screen size | 27 " | 34 " |
| DCI-P3 coverage | 98 % | 99 % |
| Panel type | IPS | QD-OLED |
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 / response time (gtg). Overall, the UltraGear 27GP950-B scores 78.2 and the ROG Swift PG34WCDM scores 76.8 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (78.2 vs 76.8). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
The UltraGear 27GP950-B does not 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. The single most decisive one: Peak brightness — 116.67% more. 1300 nits vs 600 nits.
Both ship with comparable g-sync, freesync, so those specs do not 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 says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: LG - UltraGear 27GP950-B or ASUS - ROG Swift PG34WCDM?
LG - UltraGear 27GP950-B leads the current Mars Score by 1.4 points.The more useful decision is the trade-off behind that result: compare screen size, refresh rate, panel type against the way you will actually use the product.
Choose LG - UltraGear 27GP950-B if…
LG - UltraGear 27GP950-B does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
Choose ASUS - ROG Swift PG34WCDM if…
ASUS - ROG Swift PG34WCDM has the measurable edge on peak brightness nits, response time ms, refresh rate hz.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
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.