Which is better for a new gaming build?

The Gigabyte B650 AORUS Elite AX. It uses AM5 and DDR5, so it takes current Ryzen 7000 chips and leaves room to upgrade later. The Asus B550-PLUS is AM4 and DDR4 only.

Can I reuse my old RAM with either board?

Only with the Asus. The B550-PLUS takes DDR4, so existing DDR4 sticks work. The Gigabyte B650 needs DDR5, so old DDR4 will not fit.

Which is better for a NAS?

The Asus Prime B550-PLUS, because it supports ECC memory, which matters for data integrity in always-on storage builds. The Gigabyte does not support ECC.

Is the Gigabyte worth the extra money?

At $149.99 at Best Buy as of November 7, 2026, it is a fair price for an AM5 board. Whether it costs more than the Asus depends on the Asus price at your store, which was not provided. If you need a new CPU and RAM anyway, the AM5 platform is the better long-term buy.

Which board has better storage options?

The Gigabyte. B650 boards typically offer PCIe 5.0 M.2 in addition to PCIe 4.0 slots. The Asus offers dual M.2 at PCIe 4.0/3.0 speeds.

Do either support multiple graphics cards?

The Asus lists CrossFire support. The Gigabyte B650 AORUS Elite AX is not a CrossFire board, which is fine for single-GPU builds.

Gigabyte B650 AORUS Elite AX vs Asus Prime B550-PLUS

Buy the Gigabyte B650 AORUS Elite AX if you are building a new AM5 system with a Ryzen 7000 chip and DDR5. Buy the Asus Prime B550-PLUS only if you already own an AM4 CPU and DDR4 memory, or are building a budget NAS. The Gigabyte is $149.99 at Best Buy as of November 7, 2026; the Asus price was not provided, so compare it at your store before deciding.

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