Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | MSI - MEG Z890 Ace | MSI - MPG X870E Carbon WiFi |
|---|---|---|
| Max memory | 192 GB | 256 GB |
| M.2 slots | 6 | 4 |
Between the MEG Z890 Ace and MPG X870E Carbon WiFi, the MEG Z890 Ace comes out ahead in m.2 slots, while the MPG X870E Carbon WiFi wins on max memory. Overall, the MEG Z890 Ace scores 76.2 and the MPG X870E Carbon WiFi scores 69.1 on our Mars Score.
Which should you buy?
The MEG Z890 Ace edges ahead on the Mars Score (76.2 vs 69.1), but the 7.1-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the MEG Z890 Ace 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 — 2.00 more. 6 vs 4.
Pick the MPG X870E Carbon WiFi if you care most about max memory. Its strongest claims are max memory. The single most decisive one: Max memory — 33.33% more. 256 GB vs 192 GB.
Both ship with comparable ram slots, pcie slots, wi-fi 7, so those specs do not separate the two — focus on the differences below.
Bottom line: the MEG Z890 Ace 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: MSI - MEG Z890 Ace or MSI - MPG X870E Carbon WiFi?
MSI - MEG Z890 Ace leads the current Mars Score by 7.1 points.The more useful decision is the trade-off behind that result: compare m.2 slots, max memory against the way you will actually use the product.
Choose MSI - MEG Z890 Ace if…
MSI - MEG Z890 Ace has the measurable edge on m2 slots.
Choose MSI - MPG X870E Carbon WiFi if…
MSI - MPG X870E Carbon WiFi has the measurable edge on max memory gb.
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 MSI - MEG Z890 Ace wins
- ▲M.2 slots — 2.00 more. 6 vs 4.
Why MSI - MPG X870E Carbon WiFi wins
- ▲Max memory — 33.33% more. 256 GB vs 192 GB.
Spec comparison
Platform
Expansion
| Spec | MSI - MEG Z890 Ace | MSI - MPG X870E Carbon WiFi |
|---|---|---|
| RAM slots | 4 | 4 |
| Max memory | 192 GB | 256 GBlead |
| PCIe slots | 3 | 3 |
| M.2 slotsⓘ | 6lead | 4 |
I/O
| Spec | MSI - MEG Z890 Ace | MSI - MPG X870E Carbon WiFi |
|---|---|---|
| USB ports | 14lead | 12 |
| 2.5GbE LAN | true | true |
| Wi-Fi 7ⓘ | true | true |