About the ThinkSystem SR645 V3
The Lenovo ThinkSystem SR645 V3 is a 2-socket 1U rack server on the AMD EPYC 9004 “Genoa” and 9005 “Turin” families — up to 320 cores in a single rack unit with full PCIe 5.0 I/O, the densest two-socket compute in the ThinkSystem range.
With up to 24 TruDDR5 DIMMs at 6400 MHz, up to 16× E1.S or 10× 2.5″ NVMe drives and up to 5 single-width GPUs, plus optional Neptune liquid cooling for the hottest CPUs, it targets HPC, virtualisation, HCI and dense cloud. Servnet configures, prices and supplies the SR645 V3 in the UK, verified against the Lenovo Press product guide.
ThinkSystem SR645 V3 — FAQs
What processors does the SR645 V3 support?
One or two AMD EPYC processors from the 5th Gen 9005 “Turin” or 4th Gen 9004 “Genoa” families, up to 160 cores each (320 total), TDP up to 400W, with PCIe 5.0.
How is it cooled at high TDP?
Beyond up to 8 N+1 hot-swap fans, the SR645 V3 offers an optional closed-loop liquid-cooled heatsink (Neptune L2A) and open-loop direct water cooling (Neptune Core) for the highest-wattage processors.
How much memory and storage does it hold?
Up to 24 TruDDR5 DIMM slots (12 channels per CPU) for 6TB maximum, plus up to 16× E1.S EDSFF or 10× 2.5″ NVMe front drives and internal M.2.
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