Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | HP - Z27k G3 4K USB-C | ASUS - ProArt PA32UCXR |
|---|---|---|
| Peak brightness | 400 nits | 1600 nits |
| Refresh rate | 60 Hz | 120 Hz |
| Screen size | 27 " | 32 " |
| USB-C Power Delivery | 100 W | 96 W |
| FreeSync | false | true |
Between the Z27k G3 4K USB-C and ProArt PA32UCXR, the Z27k G3 4K USB-C comes out ahead in usb-c power delivery, while the ProArt PA32UCXR wins on peak brightness / refresh rate. Overall, the Z27k G3 4K USB-C scores 63.3 and the ProArt PA32UCXR scores 66.2 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (63.3 vs 66.2). The decision is not about overall quality — both clear the bar — it is 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. The single most decisive one: USB-C Power Delivery — 4.17% more. 100 W vs 96 W.
Pick the ProArt PA32UCXR 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, refresh rate, screen size, among others. The single most decisive one: Peak brightness — 300.00% more. 1600 nits vs 400 nits.
Both ship with comparable response time (gtg), dci-p3 coverage, panel type, 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: HP - Z27k G3 4K USB-C or ASUS - ProArt PA32UCXR?
ASUS - ProArt PA32UCXR leads the current Mars Score by 2.9 points.The more useful decision is the trade-off behind that result: compare screen size, refresh rate against the way you will actually use the product.
Choose HP - Z27k G3 4K USB-C if…
HP - Z27k G3 4K USB-C has the measurable edge on has usb c pd w.
Choose ASUS - ProArt PA32UCXR if…
ASUS - ProArt PA32UCXR has the measurable edge on peak brightness nits, refresh rate hz, screen size in.
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 HP - Z27k G3 4K USB-C wins
- ▲USB-C Power Delivery — 4.17% more. 100 W vs 96 W.
Why ASUS - ProArt PA32UCXR wins
- ▲Peak brightness — 300.00% more. 1600 nits vs 400 nits.
- ▲Refresh rate — 100.00% more. 120 Hz vs 60 Hz.
- ▲Screen size — 18.52% more. 32 " vs 27 ".
- ▲Has FreeSync.
Spec comparison
Panel
| Spec | HP - Z27k G3 4K USB-C | ASUS - ProArt PA32UCXR |
|---|---|---|
| Screen size | 27 " | 32 "lead |
| Panel typeⓘ | IPS | IPS |
| Resolutionⓘ | 4K | 4K |
| Aspect ratioⓘ | 16:9 | 16:9 |
| Curvedⓘ | false | false |
Performance
| Spec | HP - Z27k G3 4K USB-C | ASUS - ProArt PA32UCXR |
|---|---|---|
| Refresh rateⓘ | 60 Hz | 120 Hzlead |
| Response time (GtG)ⓘ | 5 ms | 5 ms |
| Peak brightnessⓘ | 400 nits | 1600 nitslead |
| DCI-P3 coverageⓘ | 98 % | 98 % |
| HDRⓘ | true | true |
| G-Syncⓘ | false | false |
| FreeSyncⓘ | false | truelead |
Connectivity
| Spec | HP - Z27k G3 4K USB-C | ASUS - ProArt PA32UCXR |
|---|---|---|
| HDMI ports | 1 | 3lead |
| DisplayPort ports | 1 | 1 |
| USB-C inputⓘ | true | true |
| USB-C Power Deliveryⓘ | 100 Wlead | 96 W |
| KVM | true | true |
Frequently asked
Which has higher refresh rate, Z27k G3 4K USB-C or ProArt PA32UCXR?+
ProArt PA32UCXR refreshes at 120Hz vs 60Hz.
Which has faster response time, Z27k G3 4K USB-C or ProArt PA32UCXR?+
ProArt PA32UCXR responds in 5ms vs 5ms.
Does Z27k G3 4K USB-C or ProArt PA32UCXR have USB-C with power delivery?+
Both offer USB-C PD — 100W on Z27k G3 4K USB-C, 96W on ProArt PA32UCXR.