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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
P03051-001

P03051-001 - HP 16GB DDR4 2933MHz CL21 ECC RDIMM Memory Module

HP
16GB
DDR4
DDR4-2933/PC4-23400
Single Rank x4
ECC
Refurbished
Check availability

$278.00

8SSM31D97924

8SSM31D97924 - Lenovo 16GB DDR4 3200MHz CL22 ECC RDIMM Memory Module

Lenovo
16GB
DDR4
DDR4-3200/PC4-25600
Dual Rank x8
ECC
New
Check availability
Request quote
P12501-001

P12501-001 - HP 16GB DDR4 3200MHz CL22 ECC RDIMM Memory Module

HP
16GB
DDR4
DDR4-3200/PC4-25600
Dual Rank x8
ECC
New
Check availability
Request quote
SNPM04W6C/16GDD

SNPM04W6C/16GDD - Dell 16GB DDR4 3200MHz CL22 ECC RDIMM Memory Module

Dell
16GB
DDR4
DDR4-3200/PC4-25600
Dual Rank x8
ECC
New
Check availability
Request quote
SM30N76543

SM30N76543 - Lenovo 16GB DDR4 2666MHz CL19 ECC RDIMM Memory Module

Lenovo
16GB
DDR4
DDR4-2666/PC4-21300
Dual Rank x8
ECC
New
Check availability
Request quote
4X77A08598

4X77A08598 - Lenovo 32GB DDR4 2666MHz CL19 ECC RDIMM Memory Module

Lenovo
32GB
DDR4
DDR4-2666/PC4-21300
Dual Rank x4
ECC
New
Check availability
Request quote
AB675794

AB675794 - Dell 8GB DDR4 3200MHz CL22 ECC UDIMM Memory Module

Dell
8GB
DDR4
DDR4-3200/PC4-25600
Single Rank x8
ECC
New
Check availability
Request quote
AC055060

AC055060 - Dell 256GB DDR4 3200MHz CL22 ECC DCPMM Memory Module

Dell
256GB
DDR4
DDR4-3200/PC4-25600
-
ECC
New
Check availability
Request quote
SNP9D57RC/32G

SNP9D57RC/32G - Dell 32GB DDR4 3200MHz CL22 ECC UDIMM Memory Module

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

$910.00

880154-681

880154-681 - HPE 16GB DDR4 2666MHz CL19 ECC RDIMM Memory Module

HPE
16GB
DDR4
DDR4-2666/PC4-21300
Dual Rank
ECC
New
Check availability
Request quote
HMA81GU7AFR8N-VK

HMA81GU7AFR8N-VK - Hynix 8GB DDR4 2666MHz CL19 ECC UDIMM Memory Module

Hynix
8GB
DDR4
2666MHz
Single Rank x8
ECC
New
Check availability
Request quote
HMA82GR8AFR8N-UH

HMA82GR8AFR8N-UH - Hynix 16GB DDR4 2400MHz CL17 ECC VLP RDIMM Memory

Hynix
16GB
DDR4
2400MHz
Dual Rank x8
ECC
New
Check availability
Request quote
HMABAGR7A4R4N-UL

HMABAGR7A4R4N-UL - Hynix 128GB DDR4 2400MHz CL17 ECC RDIMM Memory

Hynix
128GB
DDR4
2400MHz
Octal Rank x4
ECC
New
Check availability
Request quote
HMA82GU8CJR8N-VK

HMA82GU8CJR8N-VK - Hynix 16GB DDR4 2666MHz CL19 ECC UDIMM Memory

Hynix
16GB
DDR4
2666MHz
Dual Rank x8
ECC
New
Check availability
Request quote
HMAA8GLCPR4N-XN

HMAA8GLCPR4N-XN - Hynix 64GB DDR4 3200MHz CL22 ECC RDIMM Memory Module

Hynix
64GB
DDR4
3200MHz
Quad Rank x4
ECC
New
Check availability
Request quote
7082851

7082851 - Sun 32GB DDR4 2133MHz CL15 ECC RDIMM Memory Module

Sun
32GB
DDR4
2133MHz
Dual Rank
ECC
New
Check availability
Request quote
A8797578

A8797578 - Dell 16GB DDR4 2400MHz CL17 ECC RDIMM Memory Module

Dell
16GB
DDR4
2400MHz
Dual Rank x8
ECC
New
Check availability
Request quote
A7946645

A7946645 - Dell 16GB DDR4 2133MHz CL15 ECC RDIMM Memory Module

Dell
16GB
DDR4
2133MHz
Dual Rank x4
ECC
New
Check availability
Request quote
A9810561

A9810561 - Dell 8GB DDR4 2666MHz CL19 ECC RDIMM Memory Module

Dell
8GB
DDR4
2666MHz
Single Rank x8
ECC
New
Check availability

$230.00

A9810566

A9810566 - Dell 8GB DDR4 2666MHz CL19 ECC RDIMM Memory Module

Dell
8GB
DDR4
2666MHz
Single Rank x8
ECC
New
Check availability

$230.00

A7910486

A7910486 - Dell 4GB DDR4 2133MHz CL15 ECC RDIMM Memory Module

Dell
4GB
DDR4
2133MHz
Single Rank x8
ECC
New
Check availability
Request quote
A9810565

A9810565 - Dell 128GB DDR4 2666MHz CL19 ECC RDIMM Memory Module

Dell
128GB
DDR4
2666MHz
Octal Rank x4
ECC
New
Check availability
Request quote
A8526300

A8526300 - Dell 8GB DDR4 2133MHz CL15 ECC UDIMM Memory Module

Dell
8GB
DDR4
2133MHz
Dual Rank x8
ECC
New
Check availability
Request quote
KSM29RD4/64HAR

KSM29RD4/64HAR - Kingston 64GB DDR4 2933MHz CL21 ECC RDIMM Memory

Kingston
64GB
DDR4
2933MHz
Dual Rank x4
ECC
New
Check availability
Request quote

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