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Yes — these are compatible

Does 64GB DDR4 (2x32GB) work with the B450?

Yes — compatible: 64GB DDR4 (2x32GB) with B450. DDR4 RAM matches the board. Live eBay prices.

✓ Memory compatible

How they line up

Spec
B450 B450
64GB DDR4 (2x32GB) 64GB DDR4 (2x32GB)
Socket
AM4
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Memory
DDR4
DDR4
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64GB DDR4 (2x32GB)
B450

Common questions

DDR4 RAM matches the board.