Which board is better for a new gaming build?

The GIGABYTE B550. It takes current Ryzen CPUs, runs PCIe 4.0 graphics cards at full speed and has Wi-Fi 6. The MSI Z370 only fits Intel 8th and 9th gen chips, which are long out of production.

Can I use the same CPU in both?

No. The MSI takes Intel LGA1151 chips and the GIGABYTE takes AMD AM4 chips. Pick the board to match the CPU you own or plan to buy.

Is the GIGABYTE worth the extra over the MSI?

The GIGABYTE was $167.98 at Walmart as of November 7, 2026, and dropped to $120.99 on November 3. If you need an AM4 board, it is the only one of the two that works, so the price gap matters less than the socket.

Which one supports more RAM?

The GIGABYTE, at 128 GB versus 64 GB on the MSI. Both have four DDR4 slots.

Do either support two graphics cards?

Only the MSI Z370 Krait Gaming lists SLI and CrossFire. The GIGABYTE B550 has a single PCIe x16 slot.

Is the GIGABYTE board ATX or Micro ATX?

The listing is inconsistent: the specs say Micro ATX, while the name and size field say ATX. Check the physical dimensions with the seller before you buy a case.

MSI Z370 Krait Gaming vs Gigabyte B550 Aorus Elite AX V2

These two boards do not fit the same build, so the CPU decides first. The MSI Z370 Krait Gaming is an Intel LGA1151 board for 8th and 9th gen Core chips; the GIGABYTE B550 AORUS Elite AX V2 is an AM4 board for Ryzen. If you are starting fresh, the GIGABYTE is the better buy: newer platform, PCIe 4.0 on the main slot, Wi-Fi 6, 128 GB RAM support and a 4.3 rating from 167 ratings. The GIGABYTE was $167.98 at Walmart as of November 7, 2026, and its lowest daily price since November 3 was $120.99 on November 3.

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