Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Dell - UltraSharp U2725QE | HP - Z27k G3 4K USB-C |
|---|---|---|
| Refresh rate | 120 Hz | 60 Hz |
| USB-C Power Delivery | 140 W | 100 W |
| Peak brightness | 450 nits | 400 nits |
Between the UltraSharp U2725QE and Z27k G3 4K USB-C, the UltraSharp U2725QE comes out ahead in refresh rate / usb-c power delivery, while the Z27k G3 4K USB-C wins on several specs. Overall, the UltraSharp U2725QE scores 64.6 and the Z27k G3 4K USB-C scores 63.3 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (64.6 vs 63.3). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the UltraSharp U2725QE 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, usb-c power delivery, peak brightness. The single most decisive one: Refresh rate — 100.00% more. 120 Hz vs 60 Hz.
The Z27k G3 4K USB-C similarly does not carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable response time (gtg), dci-p3 coverage, screen size, 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: Dell - UltraSharp U2725QE or HP - Z27k G3 4K USB-C?
Dell - UltraSharp U2725QE leads the current Mars Score by 1.3 points.The more useful decision is the trade-off behind that result: compare refresh rate against the way you will actually use the product.
Choose Dell - UltraSharp U2725QE if…
Dell - UltraSharp U2725QE has the measurable edge on refresh rate hz, has usb c pd w, peak brightness nits.
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.
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 Dell - UltraSharp U2725QE wins
- ▲Refresh rate — 100.00% more. 120 Hz vs 60 Hz.
- ▲USB-C Power Delivery — 40.00% more. 140 W vs 100 W.
- ▲Peak brightness — 12.50% more. 450 nits vs 400 nits.
Why HP - Z27k G3 4K USB-C wins
- No decisive advantages.
Spec comparison
Panel
| Spec | Dell - UltraSharp U2725QE | HP - Z27k G3 4K USB-C |
|---|---|---|
| Screen size | 27 " | 27 " |
| Panel typeⓘ | IPS | IPS |
| Resolutionⓘ | 4K | 4K |
| Aspect ratioⓘ | 16:9 | 16:9 |
| Curvedⓘ | false | false |
Performance
| Spec | Dell - UltraSharp U2725QE | HP - Z27k G3 4K USB-C |
|---|---|---|
| Refresh rateⓘ | 120 Hzlead | 60 Hz |
| Response time (GtG)ⓘ | 5 ms | 5 ms |
| Peak brightnessⓘ | 450 nitslead | 400 nits |
| DCI-P3 coverageⓘ | 98 % | 98 % |
| HDRⓘ | true | true |
| G-Syncⓘ | false | false |
| FreeSyncⓘ | false | false |
Connectivity
| Spec | Dell - UltraSharp U2725QE | HP - Z27k G3 4K USB-C |
|---|---|---|
| HDMI ports | 1 | 1 |
| DisplayPort ports | 1 | 1 |
| USB-C inputⓘ | true | true |
| USB-C Power Deliveryⓘ | 140 Wlead | 100 W |
| KVM | true | true |
Frequently asked
Which has higher refresh rate, UltraSharp U2725QE or Z27k G3 4K USB-C?+
UltraSharp U2725QE refreshes at 120Hz vs 60Hz.
Which has faster response time, UltraSharp U2725QE or Z27k G3 4K USB-C?+
Z27k G3 4K USB-C responds in 5ms vs 5ms.
Does UltraSharp U2725QE or Z27k G3 4K USB-C have USB-C with power delivery?+
Both offer USB-C PD — 140W on UltraSharp U2725QE, 100W on Z27k G3 4K USB-C.