Between the NucBox M6 and UM790 Pro, the NucBox M6 comes out ahead in tdp and volume, while the UM790 Pro wins on ram and storage. Overall, the NucBox M6 scores 67.1 and the UM790 Pro scores 71.8 on our Mars Score.
Which should you buy?
The UM790 Pro edges ahead on the Mars Score (67.1 vs 71.8), but the 4.7-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the NucBox M6 if you care most about tdp and volume. The biggest gaps in its favor are tdp, volume.
Pick the UM790 Pro if you push the hardware — gaming, on-device AI, heavy multitasking — and the extra compute headroom is worth the trade-offs. Its strongest claims are ram, storage.
Both ship with comparable thunderbolt, so those specs don't 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 tells you both are well-rounded; the differences are about trade-offs, not quality.
Why GMKtec - NucBox M6 wins
- ▲TDP — 20.00 W less. 45 vs 65.
- ▲Volume — 0.20 L less. 0.55 vs 0.75.
Why Minisforum - UM790 Pro wins
- ▲RAM — 100.00% more. 32 GB vs 16 GB.
- ▲Storage — 100.00% more. 1024 GB vs 512 GB.
Spec comparison
Core
Form & I/O
| Spec | GMKtec - NucBox M6 | Minisforum - UM790 Pro |
|---|---|---|
| Volume | 0.55 Llead | 0.75 L |
| Weight | 0.55 kglead | 0.66 kg |
| TDPⓘ | 45 Wlead | 65 W |
| USB ports | 4 | 5lead |
| Thunderboltⓘ | false | false |
Frequently asked
Spec-level deep dives
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