AMD EPYC 9554 (single socket, 12-channel DDR5-5600)

460.8 GB/s is AMD's theoretical figure for 12 channels of DDR5-5600, and the source measured about 460 GB/s with Intel MLC on this exact box, so the spec figure carries direct empirical confirmation. 64 cores. The source article quotes roughly $7,900 ex-VAT for a whole server rather than the CPU alone, so no clean CPU-only price is taken from it. The build total here breaks down as CPU ~$4,950, Supermicro H13SSL-N board ~$1,100, and 12x32GB DDR5-5600 ECC RDIMM ~$8,500. Memory dominates, at roughly 55-75% of every Genoa and Turin 12-channel build in this dataset, and a single 32GB module of the same spec was seen between $520 and $2,908 depending on vendor and OEM branding -- re-check the memory line before trusting any build total here. The used total holds the board and memory flat, since the secondary market for current-generation SP5 and DDR5 RDIMM is thin.