Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | HP - Z2 Mini G1a | Minisforum - UM790 Pro |
|---|---|---|
| RAM | 64 GB | 32 GB |
| TDP | 120 W | 65 W |
| Volume | 2.7 L | 0.75 L |
| Thunderbolt | true | false |
Between the Z2 Mini G1a and UM790 Pro, the Z2 Mini G1a comes out ahead in ram / thunderbolt, while the UM790 Pro wins on tdp / volume. Overall, the Z2 Mini G1a scores 60.1 and the UM790 Pro scores 71.8 on our Mars Score.
Which should you buy?
The UM790 Pro is the clear pick on raw spec strength, leading by 11.7 points on the Mars Score. The margin is wide enough that the underdog only makes sense if its individual strengths line up with what you specifically need.
Pick the Z2 Mini G1a if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. The biggest gaps in its favor are ram, thunderbolt. The single most decisive one: RAM — 100.00% more. 64 GB vs 32 GB.
Pick the UM790 Pro if you care most about tdp / volume. Its strongest claims are tdp, volume. The single most decisive one: TDP — 55.00 W less. 65 vs 120.
Both ship with comparable storage, so those specs do not separate the two — focus on the differences below.
Bottom line: the UM790 Pro 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: HP - Z2 Mini G1a or Minisforum - UM790 Pro?
Minisforum - UM790 Pro leads the current Mars Score by 11.7 points.The more useful decision is the trade-off behind that result: compare ram, volume, tdp against the way you will actually use the product.
Choose HP - Z2 Mini G1a if…
HP - Z2 Mini G1a has the measurable edge on ram gb, has thunderbolt.
Choose Minisforum - UM790 Pro if…
Minisforum - UM790 Pro has the measurable edge on tdp w, volume l.
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 - Z2 Mini G1a wins
- ▲RAM — 100.00% more. 64 GB vs 32 GB.
- ▲Has Thunderbolt.
Why Minisforum - UM790 Pro wins
- ▲TDP — 55.00 W less. 65 vs 120.
- ▲Volume — 1.95 L less. 0.75 vs 2.7.
Spec comparison
Core
Form & I/O
| Spec | HP - Z2 Mini G1a | Minisforum - UM790 Pro |
|---|---|---|
| Volume | 2.7 L | 0.75 Llead |
| Weight | 1.99 kg | 0.66 kglead |
| TDPⓘ | 120 W | 65 Wlead |
| USB ports | 6lead | 5 |
| Thunderboltⓘ | truelead | false |