Between the Prime Z890-P and MAG B650 Tomahawk WiFi, the Prime Z890-P comes out ahead in max memory and m.2 slots, while the MAG B650 Tomahawk WiFi wins on several specs. Overall, the Prime Z890-P scores 65 and the MAG B650 Tomahawk WiFi scores 54.8 on our Mars Score.
Which should you buy?
The Prime Z890-P is the clear pick on raw spec strength, leading by 10.2 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 Prime Z890-P if you care most about max memory and m.2 slots. The biggest gaps in its favor are max memory, m.2 slots.
The MAG B650 Tomahawk WiFi similarly doesn't carry a headline advantage on the popular specs — look at the full table for category-specific deltas.
Both ship with comparable ram slots, pcie slots, wi-fi 7, so those specs don't 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.
Why ASUS - Prime Z890-P wins
- ▲Max memory — 50.00% more. 192 GB vs 128 GB.
- ▲M.2 slots — 1.00 more. 4 vs 3.
Why MSI - MAG B650 Tomahawk WiFi wins
- No decisive advantages.
Spec comparison
Platform
| Spec | ASUS - Prime Z890-P | MSI - MAG B650 Tomahawk WiFi |
|---|---|---|
| Socketⓘ | LGA1851 | AM5 |
| Chipset | Z890 | B650 |
| Form factor | ATX | ATX |
Expansion
| Spec | ASUS - Prime Z890-P | MSI - MAG B650 Tomahawk WiFi |
|---|---|---|
| RAM slots | 4 | 4 |
| Max memory | 192 GBlead | 128 GB |
| PCIe slots | 3 | 3 |
| M.2 slotsⓘ | 4lead | 3 |
I/O
| Spec | ASUS - Prime Z890-P | MSI - MAG B650 Tomahawk WiFi |
|---|---|---|
| USB ports | 10 | 10 |
| 2.5GbE LAN | true | true |
| Wi-Fi 7ⓘ | false | false |
Frequently asked
Spec-level deep dives
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