Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | Gigabyte - X870 AORUS Master | MSI - MEG Z890 Ace |
|---|---|---|
| Max memory | 256 GB | 192 GB |
| M.2 slots | 4 | 6 |
Between the X870 AORUS Master and MEG Z890 Ace, the X870 AORUS Master comes out ahead in max memory, while the MEG Z890 Ace wins on m.2 slots. Overall, the X870 AORUS Master scores 69.1 and the MEG Z890 Ace scores 76.2 on our Mars Score.
Which should you buy?
The MEG Z890 Ace edges ahead on the Mars Score (69.1 vs 76.2), but the 7.1-point gap is small enough that the right pick comes down to which spec advantages matter to you.
Pick the X870 AORUS Master if you care most about max memory. The biggest gaps in its favor are max memory. The single most decisive one: Max memory — 33.33% more. 256 GB vs 192 GB.
Pick the MEG Z890 Ace if you care most about m.2 slots. Its strongest claims are m.2 slots. The single most decisive one: M.2 slots — 2.00 more. 6 vs 4.
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: Gigabyte - X870 AORUS Master or MSI - MEG Z890 Ace?
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 Gigabyte - X870 AORUS Master if…
Gigabyte - X870 AORUS Master has the measurable edge on max memory gb.
Choose MSI - MEG Z890 Ace if…
MSI - MEG Z890 Ace has the measurable edge on m2 slots.
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 Gigabyte - X870 AORUS Master wins
- ▲Max memory — 33.33% more. 256 GB vs 192 GB.
Why MSI - MEG Z890 Ace wins
- ▲M.2 slots — 2.00 more. 6 vs 4.
Spec comparison
Platform
Expansion
| Spec | Gigabyte - X870 AORUS Master | MSI - MEG Z890 Ace |
|---|---|---|
| RAM slots | 4 | 4 |
| Max memory | 256 GBlead | 192 GB |
| PCIe slots | 3 | 3 |
| M.2 slotsⓘ | 4 | 6lead |
I/O
| Spec | Gigabyte - X870 AORUS Master | MSI - MEG Z890 Ace |
|---|---|---|
| USB ports | 14 | 14 |
| 2.5GbE LAN | true | true |
| Wi-Fi 7ⓘ | true | true |