Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | ASUS - Prime Z890-P | Gigabyte - B850 AORUS Pro |
|---|---|---|
| M.2 slots | 4 | 3 |
| Wi-Fi 7 | false | true |
Between the Prime Z890-P and B850 AORUS Pro, the Prime Z890-P comes out ahead in m.2 slots, while the B850 AORUS Pro wins on wi-fi 7. Overall, the Prime Z890-P scores 65 and the B850 AORUS Pro scores 59.2 on our Mars Score.
Which should you buy?
The Prime Z890-P edges ahead on the Mars Score (65 vs 59.2), but the 5.8-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the Prime Z890-P if you care most about m.2 slots. The biggest gaps in its favor are m.2 slots. The single most decisive one: M.2 slots — 1.00 more. 4 vs 3.
Pick the B850 AORUS Pro if you care most about wi-fi 7. Its strongest claims are wi-fi 7. The single most decisive one: Has Wi-Fi 7.
Both ship with comparable max memory, ram slots, pcie slots, so those specs do not separate the two — focus on the differences below.
Bottom line: the Prime Z890-P 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: ASUS - Prime Z890-P or Gigabyte - B850 AORUS Pro?
ASUS - Prime Z890-P leads the current Mars Score by 5.8 points.The more useful decision is the trade-off behind that result: compare m.2 slots against the way you will actually use the product.
Choose ASUS - Prime Z890-P if…
ASUS - Prime Z890-P has the measurable edge on m2 slots.
Choose Gigabyte - B850 AORUS Pro if…
Gigabyte - B850 AORUS Pro has the measurable edge on has wifi 7.
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 ASUS - Prime Z890-P wins
- ▲M.2 slots — 1.00 more. 4 vs 3.
Why Gigabyte - B850 AORUS Pro wins
- ▲Has Wi-Fi 7.
Spec comparison
Platform
Expansion
| Spec | ASUS - Prime Z890-P | Gigabyte - B850 AORUS Pro |
|---|---|---|
| RAM slots | 4 | 4 |
| Max memory | 192 GB | 192 GB |
| PCIe slots | 3 | 3 |
| M.2 slotsⓘ | 4lead | 3 |
I/O
| Spec | ASUS - Prime Z890-P | Gigabyte - B850 AORUS Pro |
|---|---|---|
| USB ports | 10 | 10 |
| 2.5GbE LAN | true | true |
| Wi-Fi 7ⓘ | false | truelead |