How much RAM does the Lenovo ThinkSystem SR645 V3 Rack Server support?

The ThinkSystem SR645 V3 Rack Server supports up to 6144GB of memory across 24 slot(s), up to 256GB per slot.

What type of memory does the ThinkSystem SR645 V3 Rack Server use?

It uses DDR5 RDIMM memory modules.

Compatible drive types: NVMe M.2 2280 (PCIe Gen 4) SSD, SATA 2.5" Hard Drive, SATA 2.5" SSD.

Guaranteed-compatible DDR5 RDIMM upgrades for the Lenovo ThinkSystem SR645 V3 Rack Server, in matched-kit options that fill your slots.

Verified compatible

This option is out of stock.

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Guaranteed-compatible DDR5 RDIMM upgrades for the Lenovo ThinkSystem SR645 V3 Rack Server, in matched-kit options that fill your slots.

Verified compatible

This option is out of stock.

Guaranteed-compatible SSD and hard-drive upgrades for the Lenovo ThinkSystem SR645 V3 Rack Server — matched to its drive bays and slots.

This option is out of stock.

This option is out of stock.

The drive bay size is inferred from the system's reported storage interface.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.

This option is out of stock.

Specifications reported for this system.

Good to know

These modules run below the system's maximum supported speed.
ECC modules will run in non-ECC mode on this system.
Maximum capacity per slot is inferred from total capacity ÷ number of slots.
Compatibility is based on published specifications, not yet confirmed against a manufacturer tool.