DDR4 Non-ECC UDIMM Memory

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DDR4 non-ECC UDIMM (Unbuffered DIMM) is the standard memory for DDR4-generation desktop PCs, business desktops, workstations and many NAS appliances that do not use ECC. This page lists every DDR4 non-ECC UDIMM NEMIX RAM supplies, from DDR4-2133 to DDR4-3200. Each module is a 288-pin, 1.2V unbuffered DIMM with a 64-bit data path, and every module runs at its JEDEC standard speed — no XMP profile to set in the BIOS. For ECC-capable servers and workstations, see DDR4 ECC UDIMM.

What is on this page

Single modules in 4GB, 8GB, 16GB and 32GB, in 1Rx16, 1Rx8 and 2Rx8 organizations, plus matched kits up to 256GB (8x32GB) for eight-slot workstation boards. DDR4-3200 is the largest share, with DDR4-2666, 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 desktop, NAS or motherboard, and many more are listed by OEM part number — Dell SNP, Lenovo 4ZC7A, Supermicro, QNAP, TerraMaster, Synology, Samsung, SK hynix and Micron parts. Searching your model or part number at the top of the page is the fastest way to find them.

Where DDR4 desktop memory is used

DDR4 UDIMM is commonly paired with Intel Core 6th to 14th Gen desktops on DDR4 boards, Intel Core X-series on X299, and AMD Ryzen on AM4 and Threadripper on TRX40. System-matched listings on this page include Dell Precision 3930 Rack and Dell PowerEdge T40, T140 and T150; Lenovo ThinkSystem entry servers by part number; QNAP TS-h1277XU-RP, TS-h1677XU-RP, TS-h2477XU-RP, TS-877XU-RP, TS-1273AU-RP, TS-1673AU-RP, TS-832PXU and TS-432PXU; TerraMaster U8, U12, U16 and U24 rackmount NAS; Synology RS2818RP+; Supermicro X12STE, X12SCZ and X12SCQ boards; ASRock, ASUS, MSI and Gigabyte boards from B450 and B550 to H610, Q670, X299 and TRX40; and Thinkmate and CIARA workstations.

Choosing the right DDR4 desktop module

DDR4 is keyed differently from DDR5 and DDR3 and will not fit their slots. Two modules — one per channel — is the usual sweet spot; four modules add capacity but may run at a lower speed on some boards. Match density and rank to the modules already installed, and use identical modules in every slot for dual-channel operation. A faster module clocks down to the system's supported speed, so a DDR4-3200 module is a safe replacement for a slower one of the same density and rank. Non-ECC and ECC UDIMM share the same slot shape but are not interchangeable on every platform — some NAS and entry servers accept only ECC. If you are unsure, send us the system model or the OEM part number and we will confirm fitment before you order.

Buying DDR4 desktop memory 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. Fleet upgrades for business, government and education desktops are available on purchase orders, net terms and volume pricing — request a quote with the system models and quantities you need, or contact our sales team.

Also searched as DDR4 desktop RAM, DDR4 desktop memory, DDR4 UDIMM, DDR4 non-ECC RAM, DDR4 unbuffered DIMM, PC4 desktop memory, DDR4 RAM for AM4, DDR4 NAS memory.