Compare 6 products

	ASRock B450 Pro4	ASRock B450M PRO4	MSI B450-A Pro - ATX	MSI B450-A Pro MAX	MSI B450M-A Pro MAX	Supermicro X7DA8

Memory
Supported memory bus clock	2400 MHz 2133 MHz 2667 MHz 2933 MHz 3200 MHz	2400 MHz 2133 MHz 2667 MHz 2933 MHz 3200 MHz	2400 MHz 1866 MHz 2133 MHz 2667 MHz 2800 MHz 2933 MHz 3000 MHz 2667 MHz 3200 MHz 3466 MHz 3066 MHz	2400 MHz 1866 MHz 2133 MHz 2667 MHz 2800 MHz 2933 MHz 3000 MHz 2667 MHz 3200 MHz 3466 MHz 3733 MHz 3866 MHz 4000 MHz 4133 MHz 3066 MHz	2400 MHz 1866 MHz 2133 MHz 2667 MHz 2800 MHz 2933 MHz 3000 MHz 2667 MHz 3200 MHz 3466 MHz 3733 MHz 3866 MHz 4000 MHz 4133 MHz 3066 MHz	667 MHz 533 MHz
RAM technology	DDR4	DDR4	DDR4	DDR4	DDR4	DDR2
Memory slots type	DIMM	DIMM	DIMM	DIMM	DIMM	N/A
Maximum RAM size	64 GB	64 GB	64 GB	64 GB	32 GB	32 GB
Number of memory slots	4	4	4	4	2	N/A
Memory channels	Dual	Dual	Dual	N/A	Dual	N/A
ECC	N/A	N/A	yes	N/A	yes	N/A
Non-ECC	N/A	N/A	yes	N/A	yes	N/A
Unbuffered memory	N/A	N/A	N/A	N/A	yes	N/A

Technical details
Compatible processor series	AMD Ryzen	AMD Ryzen	AMD Ryzen	AMD Ryzen	AMD A AMD Athlon X4 AMD Ryzen	N/A
Maximum number of processors	1	1	1	1	1	2
Maximum number of SMP processors	N/A	N/A	1	N/A	1	N/A