DDR4 ECC UDIMM Memory

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DDR4 ECC UDIMM (ECC Unbuffered DIMM) is the error-correcting memory for entry servers, single-socket workstations and business NAS — systems that need ECC protection but do not use registered memory. This page lists every DDR4 ECC UDIMM NEMIX RAM supplies, from DDR4-2133 to DDR4-3200. Each module is a 288-pin, 1.2V unbuffered DIMM with a 72-bit ECC data path (64 data bits plus 8 check bits), so the system can detect and correct memory errors that non-ECC desktop memory would pass through silently.

What is on this page

Single modules in 8GB, 16GB and 32GB, plus a few 4GB parts for older NAS and entry servers, in 1Rx8 and 2Rx8 organizations, and matched kits up to 256GB (8x32GB). DDR4-2666 and DDR4-3200 make up the largest share, with DDR4-2400, 2133 and 2933 for earlier platforms. Narrow the list with the Technology Speed, Module Density, Kit and Rank filters. Many listings are matched to a specific server, NAS or motherboard, and many more are listed by OEM part number — Samsung, SK hynix, Micron, Supermicro, Dell SNP, Lenovo 4ZC7A, Synology D4EU, QNAP RAM-DR4EC and IBM parts. Searching your model or part number at the top of the page is the fastest way to find them.

Where DDR4 ECC UDIMM is used

DDR4 ECC UDIMM is commonly paired with Intel Xeon E-2100, E-2200 and E-2300, Xeon E3 v5/v6, Xeon W-1200/W-1300 and Xeon D platforms, and with AMD Ryzen on ECC-enabled AM4 boards. System-matched listings on this page include Dell PowerEdge T30, T150, T340, T350, R240, R250, R340 and R350 and Dell Precision 3930 Rack; HPE ProLiant MicroServer Gen10 Plus v2; Lenovo ThinkSystem entry servers; Supermicro X12SAE-5, X12SCA and X12STL-IF boards; ASRock Rack X570D4U, B550D4, E3C252 and E3C256 boards and C252/C256 servers; ASUS WS C246 PRO and Pro WS C246-ACE workstation boards; Intel S1200SP server boards; Synology RackStation RS1619xs+, RS2421+, RS2423+, RS2821RP+, RS3621RPxs and RS4021xs+ and the UC3200; QNAP TS-h686, TS-h886, TS-h987XU-RP, TVS-h1288X and TVS-h1688X; and ASUSTOR LOCKERSTOR 12R and 16R Pro NAS.

Choosing the right DDR4 ECC UDIMM

ECC UDIMM and RDIMM are not interchangeable — a board built for unbuffered memory will not run registered modules, and the reverse. ECC UDIMM does fit standard DDR4 desktop slots, but ECC is active only where the processor, chipset and BIOS support it, such as Xeon E and W-1200/W-1300 on C-series or W-series chipsets and ECC-enabled AM4 boards; on other desktop boards it runs without ECC or may not be supported. Match density and rank to the modules already installed, and use identical modules when filling every slot. A faster module clocks down to the platform's supported speed. For non-ECC desktop builds, see DDR4 Non-ECC UDIMM. If you are unsure, send us the system model or the OEM part number and we will confirm fitment before you order.

Buying DDR4 ECC UDIMM direct from NEMIX RAM

NEMIX RAM is a US-based server memory specialist since 1993. Every module is researched, matched and compatibility-tested by NEMIX RAM, JEDEC-compliant, and backed by a lifetime warranty. Purchase orders, net terms and volume pricing are available for business, government and education buyers — request a quote with the part numbers or system models you need, or contact our sales team for fitment help.

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