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  1. Home/
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  3. DDR4 ECC Server Memory

DDR4 ECC Server Memory

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.

New vs Recertified vs Refurbished

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.

New
Factory-sealed and unused, with the full manufacturer warranty. The safest choice for a fresh build or a warranty-sensitive deployment.
Recertified
OEM-recertified and restored to original specification, typically with low power-on hours. Health-tested and backed by our own replacement warranty — the same usable capacity for a lower price.
Refurbished
Professionally tested working pulls, wiped and inspected. A cost-effective option for labs, cold storage and non-critical tiers, warranty-backed.

Not sure which to pick? Read our New vs Recertified vs Refurbished guide.

Frequently asked questions

What does ECC actually do?+

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.

Registered (RDIMM) vs Load-Reduced (LRDIMM) DDR4?+

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.

Will DDR4 ECC work in my desktop?+

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.

Related collections

64GB Server RAM (ECC)32GB Server Memory (RDIMM / LRDIMM)128GB Server Memory (LRDIMM / 3DS RDIMM)

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4081 parts

Part #BrandCapacityTypeSpeedRankECCConditionAvailabilityPrice
M393A4K40CB1-CRC

M393A4K40CB1-CRC - Samsung 32GB DDR4 2400MHz ECC RDIMM Memory Module

Samsung
32GB
DDR4
2400 MHz
Dual Rank x4
ECC
New
Check availability

$355.00

M393A1G40DB0-CPB

M393A1G40DB0-CPB - Samsung 8GB DDR4 2133MHz ECC RDIMM Memory Module

Samsung
8GB
DDR4
2133 MHz
Single Rank x4
ECC
Refurbished
Check availability

$162.00

M393AAG40M32-CAECO

M393AAG40M32-CAECO - Samsung 128GB DDR4 3200MHz ECC RDIMM Memory

Samsung
128GB
DDR4
3200 MHz
Quad Rank x4
ECC
New
Check availability

$1,985.00

M391A2G43BB2-CWEQY

M391A2G43BB2-CWEQY - Samsung 16GB DDR4 3200MHz ECC RDIMM Memory Module

Samsung
16GB
DDR4
3200 MHz
Single Rank x8
ECC
Refurbished
Check availability

$422.00

MTA72ASS8G72LZ-2G6R2

MTA72ASS8G72LZ-2G6R2 - Micron 64GB DDR4 2666MHz ECC DIMM Memory Module

Micron
64GB
DDR4
2666 MHz
-
ECC
New
Check availability

$758.00

MTA36ASF8G72PZ-3G2E1TI

MTA36ASF8G72PZ-3G2E1TI - Micron 64GB DDR4 3200MHz ECC RDIMM Memory

Micron
64GB
DDR4
3200MHz
Dual Rank x4
ECC
New
Check availability

$1,010.00

MTA36ASF8G72PZ-3G2B2VI

MTA36ASF8G72PZ-3G2B2VI - Micron 64GB DDR4 3200MHz ECC RDIMM Memory

Micron
64GB
DDR4
3200MHz
Dual Rank x4
ECC
New
Check availability

$1,010.00

MTA18ASF2G72PDZ-3G2E1

MTA18ASF2G72PDZ-3G2E1 - Micron 16GB DDR4 3200MHz ECC RDIMM Memory

Micron
16GB
DDR4
3200 MHz
Dual Rank x8
ECC
New
Check availability
Request quote
MTA72ASS16G72LZ-3G2B2XI

MTA72ASS16G72LZ-3G2B2XI - Micron 128GB DDR4 3200MHz ECC RDIMM Memory

Micron
128GB
DDR4
3200MHz
Quad Rank x4
ECC
New
Check availability
Request quote
MTA36ASF8G72PZ-3G2B2TI

MTA36ASF8G72PZ-3G2B2TI - Micron 64GB DDR4 3200MHz ECC RDIMM Memory

Micron
64GB
DDR4
3200MHz
Dual Rank x4
ECC
New
Check availability

$1,010.00

M386A8K40DM2-CVFB0

M386A8K40DM2-CVFB0 - Samsung 64GB DDR4 2933MHz ECC RDIMM Memory Module

Samsung
64GB
DDR4
2933 MHz
Quad Rank x4
ECC
New
Check availability

$938.00

MTA18ASF4G72PDZ-3G2

MTA18ASF4G72PDZ-3G2 - Micron 32GB DDR4 3200MHz ECC RDIMM Memory Module

Micron
32GB
DDR4
3200 MHz
Dual Rank x8
ECC
New
Check availability

$918.00

M393A4K40DB3-CWECY

M393A4K40DB3-CWECY - Samsung 32GB DDR4 3200MHz ECC RDIMM Memory Module

Samsung
32GB
DDR4
3200 MHz
Dual Rank x4
ECC
New
Check availability

$1,078.00

MTA18ASF4G72PDZ-3G2R

MTA18ASF4G72PDZ-3G2R - Micron 32GB DDR4 3200MHz ECC RDIMM Memory

Micron
32GB
DDR4
3200 MHz
Dual Rank x8
ECC
New
Check availability

$918.00

MTA9ASF2G72AZ-3G2B1R

MTA9ASF2G72AZ-3G2B1R - Micron 16GB DDR4 3200MHz ECC UDIMM Memory

Micron
16GB
DDR4
3200 MHz
Single Rank x8
ECC
New
Check availability

$1,528.00

MTA9ASF2G72PZ-3G2B1R

MTA9ASF2G72PZ-3G2B1R - Micron 16GB DDR4 3200MHz ECC RDIMM Memory

Micron
16GB
DDR4
3200 MHz
Single Rank x8
ECC
New
Check availability

$628.00

MTA9ASF2G72PZ-3G2F1R

MTA9ASF2G72PZ-3G2F1R - Micron 16GB DDR4 3200MHz ECC RDIMM Memory

Micron
16GB
DDR4
3200 MHz
Single Rank x8
ECC
New
Check availability

$628.00

MTA9ASF2G72PZ-3G2E1R

MTA9ASF2G72PZ-3G2E1R - Micron 16GB DDR4 3200MHz ECC RDIMM Memory

Micron
16GB
DDR4
3200 MHz
Single Rank x8
ECC
New
Check availability

$628.00

MTA9ASF2G72PZ-3G2R

MTA9ASF2G72PZ-3G2R - Micron 16GB DDR4 3200MHz ECC RDIMM Memory Module

Micron
16GB
DDR4
3200 MHz
Single Rank x8
ECC
New
Check availability

$628.00

M393A2K43DB2-CVFBQ

M393A2K43DB2-CVFBQ - Samsung 16GB DDR4 2933MHz ECC RDIMM Memory Module

Samsung
16GB
DDR4
2933 MHz
Dual Rank x8
ECC
New
Check availability

$295.00

MTA36ASF8G72PZ-2G9B1VI

MTA36ASF8G72PZ-2G9B1VI - Micron 64GB DDR4 2933MHz ECC RDIMM Memory

Micron
64GB
DDR4
2933MHz
Dual Rank
ECC
Refurbished
Check availability

$650.00

MTA36ASF8G72PZ-2G9B1

MTA36ASF8G72PZ-2G9B1 - Micron 64GB DDR4 2933MHz ECC RDIMM Memory

Micron
64GB
DDR4
2933 MHz
Dual Rank x4
ECC
Refurbished
Check availability

$650.00

MTA36ASF8G72PZ-2G9B1UL

MTA36ASF8G72PZ-2G9B1UL - Micron 64GB DDR4 2933MHz ECC RDIMM Memory

Micron
64GB
DDR4
2933MHz
Dual Rank x4
ECC
Refurbished
Check availability

$650.00

MTA36ASF8G72PZ-2G9B2

MTA36ASF8G72PZ-2G9B2 - Micron 64GB DDR4 2933MHz ECC RDIMM Memory

Micron
64GB
DDR4
2933 MHz
Dual Rank x4
ECC
Refurbished
Check availability

$650.00

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