Intel W790, C621, C622 & C422 Motherboard Memory: Xeon W & Xeon Scalable

42 products

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Memory upgrades for W790, C621, C622 & C422 motherboards and the workstations and servers built on them. Each listing covers one board or system, using the memory type, speed and module size it supports, in single modules and matched kits. To find yours, type the model name into the search bar at the top of the page, for example Pro WS W790E-SAGE SE, X13SWA-TF, X12SPA-TF, WS C621E SAGE or Pro WS C422-ACE. The model name is printed on the board and on the box, or on the system label.

Platforms on this page

W790 (9 listings): Intel Xeon W-2400 / W-3400 and W-2500 / W-3500, socket LGA4677. DDR5 ECC RDIMM, four or eight channels.
C621 (18 listings): Intel Xeon Scalable (1st to 3rd Gen) and Xeon W-3200 / W-3300, socket LGA3647 or LGA4189. DDR4 ECC RDIMM or LRDIMM, six or eight channels per processor.
C622 (12 listings): Intel Xeon Scalable (1st and 2nd Gen), socket LGA3647. DDR4 ECC RDIMM or LRDIMM, six channels per processor.
C422 (5 listings): Intel Xeon W-2100 / W-2200, socket LGA2066. DDR4 ECC RDIMM or LRDIMM, four channels.

Module sizes: 8GB to 256GB per module, depending on the board.

W790, C621, C622 & C422 listings by brand

ASUS (6 listings): see ASUS motherboard memory and ASUS workstation memory.
ASRock (30 listings): see ASRock motherboard memory and ASRock Rack server memory.
Supermicro (6 listings): see Supermicro motherboard memory and Supermicro workstation memory.

Choosing memory for a W790, C621, C622 & C422 system

Registered (RDIMM), load-reduced (LRDIMM) and unbuffered (UDIMM) modules are not interchangeable, and ECC and non-ECC modules should not be mixed; each listing names the exact type the board takes. Install identical modules and fill memory channels evenly for full bandwidth. NEMIX RAM modules are JEDEC-standard, and faster modules run at the speed the platform supports. Browse by module type: DDR5 RDIMM, DDR4 RDIMM and DDR4 LRDIMM.

Not sure which module fits? Send us your motherboard or system model name and we will confirm the right module before you order.

Buying in volume direct from NEMIX RAM

NEMIX RAM is a US-based server memory specialist, in business since 1993. Every module is researched, matched, and compatibility-tested by NEMIX RAM, is JEDEC-compliant, and is backed by a lifetime warranty. Purchase orders, net terms and volume pricing are available for studios, engineering firms, research labs, universities, government buyers, system integrators and resellers. Request a quote for a set of workstations or servers.

Memory by chipset: All chipsets · X870 & X870E · B850 · B650 & B650E · X670 & X670E · A620 · X570 & X570S · B550 · B450 · Z890 · B860 · Z790 · B760 · Z690 · B660 · H610 · Z590 · B560 · Z490 · H510 · H310 · AMD Threadripper · W880, W680, W480 & C-series · X299 & X99.