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 | Dell - UltraSharp U3225QE |
|---|---|---|
| Refresh rate | 60 Hz | 120 Hz |
| USB-C Power Delivery | 100 W | 140 W |
| Screen size | 27 " | 31.5 " |
| Peak brightness | 400 nits | 450 nits |
| DCI-P3 coverage | 98 % | 99 % |
Between the Z27k G3 4K USB-C and UltraSharp U3225QE, the Z27k G3 4K USB-C comes out ahead in several specs, while the UltraSharp U3225QE wins on refresh rate / usb-c power delivery. Overall, the Z27k G3 4K USB-C scores 63.3 and the UltraSharp U3225QE scores 66.4 on our Mars Score.
Which should you buy?
The UltraSharp U3225QE edges ahead on the Mars Score (63.3 vs 66.4), but the 3.1-point gap is small enough that the right pick comes down to which spec advantages matter to you.
The Z27k G3 4K USB-C 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 UltraSharp U3225QE 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 refresh rate, usb-c power delivery, screen size, among others. The single most decisive one: Refresh rate — 100.00% more. 120 Hz vs 60 Hz.
Both ship with comparable response time (gtg), panel type, g-sync, 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 Dell - UltraSharp U3225QE?
Dell - UltraSharp U3225QE leads the current Mars Score by 3.1 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 does not lead a decisive measured field here, so choose it for price, ecosystem, design, or availability when those matter more to you.
Choose Dell - UltraSharp U3225QE if…
Dell - UltraSharp U3225QE has the measurable edge on refresh rate hz, has usb c pd w, 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
- No decisive advantages.
Why Dell - UltraSharp U3225QE wins
- ▲Refresh rate — 100.00% more. 120 Hz vs 60 Hz.
- ▲USB-C Power Delivery — 40.00% more. 140 W vs 100 W.
- ▲Screen size — 16.67% more. 31.5 " vs 27 ".
- ▲Peak brightness — 12.50% more. 450 nits vs 400 nits.
- ▲DCI-P3 coverage — 1.02% more. 99 % vs 98 %.
Spec comparison
Panel
| Spec | HP - Z27k G3 4K USB-C | Dell - UltraSharp U3225QE |
|---|---|---|
| Screen size | 27 " | 31.5 "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 | Dell - UltraSharp U3225QE |
|---|---|---|
| Refresh rateⓘ | 60 Hz | 120 Hzlead |
| Response time (GtG)ⓘ | 5 ms | 5 ms |
| Peak brightnessⓘ | 400 nits | 450 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 | Dell - UltraSharp U3225QE |
|---|---|---|
| HDMI ports | 1 | 1 |
| DisplayPort ports | 1 | 1 |
| USB-C inputⓘ | true | true |
| USB-C Power Deliveryⓘ | 100 W | 140 Wlead |
| KVM | true | true |
Frequently asked
Which has higher refresh rate, Z27k G3 4K USB-C or UltraSharp U3225QE?+
UltraSharp U3225QE refreshes at 120Hz vs 60Hz.
Which has faster response time, Z27k G3 4K USB-C or UltraSharp U3225QE?+
UltraSharp U3225QE responds in 5ms vs 5ms.
Does Z27k G3 4K USB-C or UltraSharp U3225QE have USB-C with power delivery?+
Both offer USB-C PD — 100W on Z27k G3 4K USB-C, 140W on UltraSharp U3225QE.