Does the H770 use DDR4 or DDR5?

H770 boards exist in both DDR4 and DDR5 versions — the chipset supports either, so check the specific board model before buying memory.

Not compatible

Is the Ryzen 7 5800 compatible with H770?

No — not compatible: Ryzen 7 5800 + H770. Socket mismatch: CPU is AM4, motherboard is LGA1700. Live eBay prices for both.

Spec

Ryzen 7 5800

H770

Socket

AM4

LGA1700

Peak power

142W

—

Memory

—

DDR4 or DDR5 (board variant)

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Ryzen 7 5800

H770

Socket mismatch: CPU is AM4, motherboard is LGA1700. The sockets differ, so the CPU will not fit this board.