Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Dell - UltraSharp U3825QW | HP - Z27k G3 4K USB-C |
|---|---|---|
| Refresh rate | 120 Hz | 60 Hz |
| USB-C Power Delivery | 140 W | 100 W |
| Screen size | 37.5 " | 27 " |
| Peak brightness | 450 nits | 400 nits |
| DCI-P3 coverage | 99 % | 98 % |
Between the UltraSharp U3825QW and Z27k G3 4K USB-C, the UltraSharp U3825QW comes out ahead in refresh rate / usb-c power delivery, while the Z27k G3 4K USB-C wins on several specs. Overall, the UltraSharp U3825QW scores 68.4 and the Z27k G3 4K USB-C scores 63.3 on our Mars Score.
Which should you buy?
The UltraSharp U3825QW edges ahead on the Mars Score (68.4 vs 63.3), but the 5.1-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the UltraSharp U3825QW 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, screen size, among others. 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), panel type, g-sync, so those specs do not separate the two — focus on the differences below.
Bottom line: the UltraSharp U3825QW 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: Dell - UltraSharp U3825QW or HP - Z27k G3 4K USB-C?
Dell - UltraSharp U3825QW leads the current Mars Score by 5.1 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 Dell - UltraSharp U3825QW if…
Dell - UltraSharp U3825QW has the measurable edge on refresh rate hz, has usb c pd w, screen size in.
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 U3825QW 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 — 38.89% more. 37.5 " vs 27 ".
- ▲Peak brightness — 12.50% more. 450 nits vs 400 nits.
- ▲DCI-P3 coverage — 1.02% more. 99 % vs 98 %.
Why HP - Z27k G3 4K USB-C wins
- No decisive advantages.
Spec comparison
Panel
| Spec | Dell - UltraSharp U3825QW | HP - Z27k G3 4K USB-C |
|---|---|---|
| Screen size | 37.5 "lead | 27 " |
| Panel typeⓘ | IPS | IPS |
| Resolutionⓘ | 4K | 4K |
| Aspect ratioⓘ | 21:9 | 16:9 |
| Curvedⓘ | truelead | false |
Performance
| Spec | Dell - UltraSharp U3825QW | 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ⓘ | 99 %lead | 98 % |
| HDRⓘ | true | true |
| G-Syncⓘ | false | false |
| FreeSyncⓘ | false | false |
Connectivity
| Spec | Dell - UltraSharp U3825QW | HP - Z27k G3 4K USB-C |
|---|---|---|
| HDMI ports | 2lead | 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 U3825QW or Z27k G3 4K USB-C?+
UltraSharp U3825QW refreshes at 120Hz vs 60Hz.
Which has faster response time, UltraSharp U3825QW or Z27k G3 4K USB-C?+
Z27k G3 4K USB-C responds in 5ms vs 5ms.
Does UltraSharp U3825QW or Z27k G3 4K USB-C have USB-C with power delivery?+
Both offer USB-C PD — 140W on UltraSharp U3825QW, 100W on Z27k G3 4K USB-C.