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Lenovo ThinkStation P Series Workstation Memory Upgrades

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Memory upgrades for Lenovo ThinkStation workstations, from the current P Series (P3 Tiny and P3 Ultra SFF, the P2 and P3 Gen 2 towers, and the Xeon and Threadripper PRO towers P5 Gen 2, P7, P8 and PX) back through the previous generations still in service: P2, P3, P5, P340, P348, P350, P358, P360, P520, P520c, P620, P720 and P920. Every listing is matched to a specific ThinkStation and the memory it actually takes, DDR4 or DDR5 SODIMM, UDIMM, registered RDIMM or load-reduced LRDIMM, ECC or non-ECC, at the platform's native speed, in single modules and matched kits sized for that machine's slot count. NEMIX RAM researches, matches, and compatibility-tests each module against the platform it is listed for, and backs it with a lifetime replacement warranty and US-based support.

Which ThinkStation takes which memory

P3 Tiny Gen 2 — two slots of DDR5-5600 non-ECC SODIMM, up to 128GB.

P3 Ultra SFF Gen 2 — DDR5-5600 SODIMM in ECC or non-ECC; both are listed here, so choose the one that matches your configuration.

P2 Tower Gen 2 and P3 Tower Gen 2 — four slots of DDR5-5600 UDIMM, ECC or non-ECC (Intel W880). One or two modules run at 5600 MT/s; per Lenovo, four modules run at 4800 (8GB/16GB) or 4400 (32GB). Two-module kits give you dual-channel at full speed; four-module kits give you maximum capacity.

P5 Gen 2 (Intel Xeon 6, W890) — eight slots of DDR5-6400 ECC RDIMM, up to 1TB.

P7 (Intel Xeon W-3400, W790) — eight slots of DDR5-4800 ECC RDIMM, eight channels, up to 1TB.

P8 (AMD Ryzen Threadripper PRO) — eight slots, eight channels, up to 1TB. Threadripper PRO 7000 WX systems run DDR5-4800 RDIMM; 9000 WX systems run DDR5-6400 RDIMM. Each has its own listing — check which processor your P8 was built with.

PX (dual Intel Xeon Scalable, C741) — sixteen slots, eight per processor, up to 2TB. 4th Gen Xeon Scalable runs DDR5-4800 RDIMM; 5th Gen runs DDR5-5600 RDIMM. Populate each processor in matched sets.

Kits for multi-channel platforms

The P5, P7 and P8 are 8-channel (or 4-channel on the P5) designs and the PX is 8-channel per socket: bandwidth scales with the number of channels populated, so an 8-module kit of 16GB delivers far more throughput than a single 128GB module. The RDIMM listings here go up to 8-module kits in 16GB, 32GB and 64GB modules for that reason. If you need 96GB, 128GB or 256GB modules, or a mixed configuration, contact us for a matched build.

Previous-generation ThinkStation workstations

Fleets of ThinkStations from the last several years are still running CAD, simulation, imaging and media work, and they are usually cheaper to upgrade than to replace. Find your machine type (a four-character code such as 30FR or 30BC on the label and in Lenovo's system information), then pick the matching listing. The original-generation P2, P3 and P5 have their own listings, separate from the Gen 2 models above.

DDR5 client workstations

P2 Tower (original): ECC, non-ECC; P3 Tower (original): ECC, non-ECC; P3 Tiny (original): non-ECC; P3 Ultra SFF (original): ECC, non-ECC; P360 Tower: ECC, non-ECC; P360 Tiny: non-ECC; P360 Ultra: ECC, non-ECC.

The towers take DDR5-4800 UDIMM, ECC or non-ECC. The Tiny and Ultra machines take SODIMM; the P3 Ultra SFF and P360 Ultra also accept ECC SODIMM. The P3 Tiny takes DDR5-5600 SODIMM (non-ECC only).

DDR4 client workstations

P350 Tower: ECC, non-ECC; P350 SFF: ECC, non-ECC; P350 Tiny: non-ECC; P358 Tower: ECC, non-ECC; P348 Tower: non-ECC; P340 Tower: ECC, non-ECC; P340 SFF: ECC, non-ECC; P340 Tiny: non-ECC.

The P350, P358 and P348 run DDR4-3200; the P340 runs DDR4-2933. Towers and SFF machines take UDIMM (ECC on the models that support it); the Tiny machines take non-ECC SODIMM. The P348 is non-ECC only.

Xeon and Threadripper PRO towers (registered memory)

P5 (original): RDIMM; P620: RDIMM; P520: RDIMM; P520c: RDIMM; P720: RDIMM; P920: LRDIMM, RDIMM.

The original P5 takes DDR5-4800 ECC RDIMM. The P620 takes DDR4-3200 RDIMM. The P520, P520c and P720 take DDR4-2666 or DDR4-2933 RDIMM depending on the processor. The P920 takes DDR4-2933 RDIMM or, as a separate listing, DDR4-2666 LRDIMM; never mix RDIMM and LRDIMM in one machine. Populate every memory channel for full bandwidth, and match the processor generation to the speed on the listing.

Not covered

The ThinkStation PGX uses 128GB of LPDDR5X unified memory soldered to the NVIDIA GB10 module and cannot be upgraded. Lenovo also offers DDR5-6400 CUDIMM (P3 Tower Gen 2) and CSODIMM (P3 Tiny and P3 Ultra Gen 2) configurations; NEMIX RAM does not currently support clocked-driver DIMMs, so those configurations are not listed. The standard DDR5-5600 UDIMM and SODIMM configurations of the same machines are covered above.