DDR4 ECC memory is the backbone of the current server fleet — Error-Correcting Code protects against single-bit faults, and Registered (RDIMM) or Load-Reduced (LRDIMM) buffering is what lets a server run many DIMMs stably. Every module here is server-grade DDR4 ECC, sold by exact manufacturer part number across 16GB, 32GB, 64GB and 128GB capacities and 2133 through 3200 MT/s speeds, from Micron, Samsung, SK Hynix and the HPE and Dell OEM-serialized parts your iLO or iDRAC expects. New and Refurbished stock sit together so you can compare a factory module against a tested pull for the same slot. ECC and buffering type must match your platform exactly — an unbuffered or non-ECC stick won't post in most servers — so confirm your population rules, or use the bulk-quote link and we'll pick the compatible part for your model. In stock, fast US shipping, warranty-backed, POs welcome.
Every part is sold by exact manufacturer part number and ships warranty-backed. Here's what each condition means so you can weigh price against your workload.
Not sure which to pick? Read our New vs Recertified vs Refurbished guide.
ECC (Error-Correcting Code) memory detects and corrects single-bit errors on the fly, preventing silent data corruption and crashes — which is why servers require it. Desktop (non-ECC) memory won't post in most server platforms.
Both are buffered ECC types for servers. RDIMM buffers address/command lines and covers most builds; LRDIMM also buffers data lines to reach higher capacity per channel. Use whichever your server's rules specify.
Generally no — most desktop boards need unbuffered non-ECC (or UDIMM ECC) memory and won't accept RDIMM/LRDIMM. These are server/workstation modules. Ask via the bulk-quote link if you're unsure about your board.
4081 parts
D4ER01-16G - Synology 16GB DDR4 ECC Registered RDIMM Memory
$1,875.00
D4ER01-32G - Synology 32GB DDR4 ECC Registered DIMM Memory
CT4G4RFS8266 - Crucial 4GB DDR4 2666MHz ECC DIMM 1.2V 288-Pin Memory
4X70F28591 - Lenovo 32GB DDR4 2133MHz ECC RDIMM 1.2V 288-Pin Memory
4X70P98201 - Lenovo 8GB DDR4 2666MHz ECC RDIMM 1.2V 288-Pin Memory
4X70M09262 - Lenovo 16GB DDR4 2400MHz ECC RDIMM 1.2V 288-Pin Memory
4X70P98202 - Lenovo 16GB DDR4 2666MHz ECC RDIMM 1.2V 288-Pin Memory
4X70M09261 - Lenovo 8GB DDR4 2400MHz ECC RDIMM 1.2V 288-Pin Memory
00NV204 - Lenovo 16GB DDR4 2400MHz ECC RDIMM 1.2V 288-Pin Memory
$195.00
4X70G88333 - Lenovo 8GB DDR4 2400MHz ECC UDIMM 1.2V 288-Pin Memory
4X70F28590 - Lenovo 16GB DDR4 2133MHz ECC RDIMM 1.2V 288-Pin Memory
$185.00
7X77A01303 - Lenovo 16GB DDR4 2666MHz ECC RDIMM Memory Module
$230.00
95Y4808 - Lenovo 32GB DDR4 2133MHz ECC RDIMM 1.2V 288-Pin Memory
$305.00
4X70F28589 - Lenovo 8GB DDR4 2133MHz ECC RDIMM 1.2V 288-Pin Memory
$165.00
46W0833 - Lenovo 32GB DDR4 2400MHz ECC RDIMM Memory Module
$290.00
03T6779 - Lenovo 8GB DDR4 2133MHz ECC RDIMM 1.2V 288-Pin Memory
$162.00
46W0835 - Lenovo 32GB DDR4 2400MHz ECC RDIMM Memory Module
$290.00
03T7861 - Lenovo 8GB DDR4 2133MHz ECC RDIMM 1.2V 288-Pin Memory
$165.00
01KN303 - Lenovo 16GB DDR4 2400MHz ECC RDIMM 1.2V 288-Pin Memory
$195.00
7X77A01304 - Lenovo 32GB DDR4 2666MHz ECC RDIMM Memory Module
$392.00
00NV205 - Lenovo 32GB DDR4 2400MHz ECC RDIMM Memory Module
$362.00
7X77A01302 - Lenovo 16GB DDR4 2666MHz ECC RDIMM 1.2V 288-Pin Memory
$245.00
7X77A01305 - Lenovo 64GB DDR4 2666MHz ECC RDIMM Memory Module
$472.00
4X70G88319 - Lenovo 16GB DDR4 2400MHz ECC RDIMM 1.2V 288-Pin Memory
$195.00
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