What are the maximum memory speed and capacity supported by the B550 Tomahawk?
The B550 Tomahawk supports up to 128GB of DDR4 memory across four DIMM slots. Memory speeds up to DDR4 4866+ MHz are supported via A-XMP OC Mode, with JEDEC standard speeds up to DDR4 3200 MHz. (Page 4)
From the official Tomahawk B550 Tomahawk Msi Mag Gaming Motherboard User Guide manual, page 4
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