HP - Z27k G3 4K USB-C vs Samsung - ViewFinity S9 (S90PC)
Between the Z27k G3 4K USB-C and ViewFinity S9 (S90PC), the Z27k G3 4K USB-C comes out ahead in usb-c power delivery, while the ViewFinity S9 (S90PC) wins on peak brightness and dci-p3 coverage. Overall, the Z27k G3 4K USB-C scores 59 and the ViewFinity S9 (S90PC) scores 59.3 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (59 vs 59.3). The decision isn't about overall quality — both clear the bar — it's about which specific trade-offs fit your use.
Pick the Z27k G3 4K USB-C if you care most about usb-c power delivery. The biggest gaps in its favor are usb-c power delivery.
Pick the ViewFinity S9 (S90PC) 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, dci-p3 coverage.
Both ship with comparable refresh rate, response time (gtg), screen size, 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 HP - Z27k G3 4K USB-C wins
- ▲USB-C Power Delivery — 11.11% more. 100 W vs 90 W.
Why Samsung - ViewFinity S9 (S90PC) wins
- ▲Peak brightness — 50.00% more. 600 nits vs 400 nits.
- ▲DCI-P3 coverage — 1.02% more. 99 % vs 98 %.
Spec comparison
Panel
| Spec | HP - Z27k G3 4K USB-C | Samsung - ViewFinity S9 (S90PC) |
|---|---|---|
| Screen sizeⓘ | 27 " | 27 " |
| Panel typeⓘ | IPS | IPS |
| Resolutionⓘ | 4K | 5Klead |
| Aspect ratioⓘ | 16:9 | 16:9 |
| Curvedⓘ | false | false |
Performance
| Spec | HP - Z27k G3 4K USB-C | Samsung - ViewFinity S9 (S90PC) |
|---|---|---|
| Refresh rateⓘ | 60 Hz | 60 Hz |
| Response time (GtG)ⓘ | 5 ms | 5 ms |
| Peak brightnessⓘ | 400 nits | 600 nitslead |
| DCI-P3 coverageⓘ | 98 % | 99 %lead |
| HDRⓘ | true | true |
| G-Syncⓘ | false | false |
| FreeSyncⓘ | false | false |
Connectivity
| Spec | HP - Z27k G3 4K USB-C | Samsung - ViewFinity S9 (S90PC) |
|---|---|---|
| HDMI ports | 1 | 1 |
| DisplayPort ports | 1lead | 0 |
| USB-C input | true | true |
| USB-C Power Deliveryⓘ | 100 Wlead | 90 W |
| KVM | truelead | false |
Frequently asked
Which has higher refresh rate, Z27k G3 4K USB-C or ViewFinity S9 (S90PC)?+
ViewFinity S9 (S90PC) refreshes at 60Hz vs 60Hz.
Which has faster response time, Z27k G3 4K USB-C or ViewFinity S9 (S90PC)?+
ViewFinity S9 (S90PC) responds in 5ms vs 5ms.
Does Z27k G3 4K USB-C or ViewFinity S9 (S90PC) have USB-C with power delivery?+
Both offer USB-C PD — 100W on Z27k G3 4K USB-C, 90W on ViewFinity S9 (S90PC).
Spec-level deep dives
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