LG - UltraGear 45GX950A-B vs Samsung - ViewFinity S9 (S90PC)
Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | LG - UltraGear 45GX950A-B | Samsung - ViewFinity S9 (S90PC) |
|---|---|---|
| Refresh rate | 165 Hz | 60 Hz |
| Peak brightness | 1300 nits | 600 nits |
| Response time (GtG) | 0.03 ms | 5 ms |
| Screen size | 45 " | 27 " |
| G-Sync | true | false |
| FreeSync | true | false |
Between the UltraGear 45GX950A-B and ViewFinity S9 (S90PC), the UltraGear 45GX950A-B comes out ahead in refresh rate / peak brightness, while the ViewFinity S9 (S90PC) wins on dci-p3 coverage. Overall, the UltraGear 45GX950A-B scores 81.4 and the ViewFinity S9 (S90PC) scores 65.9 on our Mars Score.
Which should you buy?
The UltraGear 45GX950A-B is the clear pick on raw spec strength, leading by 15.5 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 refresh rate, peak brightness, response time (gtg), among others. The single most decisive one: Refresh rate — 175.00% more. 165 Hz vs 60 Hz.
Pick the ViewFinity S9 (S90PC) if you care most about dci-p3 coverage. Its strongest claims are dci-p3 coverage. The single most decisive one: DCI-P3 coverage — 0.51% more. 99 % vs 98.5 %.
Both ship with comparable usb-c power delivery, so those specs do not 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.
Which should you buy: LG - UltraGear 45GX950A-B or Samsung - ViewFinity S9 (S90PC)?
LG - UltraGear 45GX950A-B leads the current Mars Score by 15.5 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 45GX950A-B if…
LG - UltraGear 45GX950A-B has the measurable edge on refresh rate hz, peak brightness nits, response time ms.
Choose Samsung - ViewFinity S9 (S90PC) if…
Samsung - ViewFinity S9 (S90PC) has the measurable edge on color gamut dci p3 pct.
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 45GX950A-B wins
- ▲Refresh rate — 175.00% more. 165 Hz vs 60 Hz.
- ▲Peak brightness — 116.67% more. 1300 nits vs 600 nits.
- ▲Response time (GtG) — 99.40% less. 0.03 ms vs 5 ms.
- ▲Screen size — 66.67% more. 45 " vs 27 ".
- ▲Has G-Sync.
- ▲Has FreeSync.
- ▲Panel type: OLED (vs IPS).
Why Samsung - ViewFinity S9 (S90PC) wins
- ▲DCI-P3 coverage — 0.51% more. 99 % vs 98.5 %.
Spec comparison
Panel
| Spec | LG - UltraGear 45GX950A-B | Samsung - ViewFinity S9 (S90PC) |
|---|---|---|
| Screen size | 45 "lead | 27 " |
| Panel typeⓘ | OLEDlead | IPS |
| Resolutionⓘ | 5K | 5K |
| Aspect ratioⓘ | 21:9 | 16:9 |
| Curvedⓘ | truelead | false |
Performance
| Spec | LG - UltraGear 45GX950A-B | Samsung - ViewFinity S9 (S90PC) |
|---|---|---|
| Refresh rateⓘ | 165 Hzlead | 60 Hz |
| Response time (GtG)ⓘ | 0.03 mslead | 5 ms |
| Peak brightnessⓘ | 1300 nitslead | 600 nits |
| DCI-P3 coverageⓘ | 98.5 % | 99 %lead |
| HDRⓘ | true | true |
| G-Syncⓘ | truelead | false |
| FreeSyncⓘ | truelead | false |
Connectivity
| Spec | LG - UltraGear 45GX950A-B | Samsung - ViewFinity S9 (S90PC) |
|---|---|---|
| HDMI ports | 2lead | 1 |
| DisplayPort ports | 1lead | 0 |
| USB-C inputⓘ | true | true |
| USB-C Power Deliveryⓘ | 90 W | 90 W |
| KVM | truelead | false |
Frequently asked
Which has higher refresh rate, UltraGear 45GX950A-B or ViewFinity S9 (S90PC)?+
UltraGear 45GX950A-B refreshes at 165Hz vs 60Hz.
Which has faster response time, UltraGear 45GX950A-B or ViewFinity S9 (S90PC)?+
UltraGear 45GX950A-B responds in 0.03ms vs 5ms.
Does UltraGear 45GX950A-B or ViewFinity S9 (S90PC) have USB-C with power delivery?+
Both offer USB-C PD — 90W on UltraGear 45GX950A-B, 90W on ViewFinity S9 (S90PC).