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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
00NV207

00NV207 - Lenovo 64GB DDR4 2400MHz CL17 ECC RDIMM Memory Module

Lenovo
64GB
DDR4
2400MHz
Quad Rank x4
ECC
New
Check availability

$545.00

46W0831

46W0831 - Lenovo 16GB DDR4 2400MHz CL17 ECC RDIMM Memory Module

Lenovo
16GB
DDR4
DDR4-2400/PC4-19200
Dual Rank x4
ECC
New
Check availability

$195.00

00FM013

00FM013 - Lenovo 32GB DDR4 2133MHz CL15 ECC RDIMM Memory Module

Lenovo
32GB
DDR4
2133MHz
Dual Rank x4
ECC
New
Check availability

$280.00

46W0832

46W0832 - Lenovo 32GB DDR4 2400MHz CL17 ECC RDIMM Memory Module

Lenovo
32GB
DDR4
2400MHz
Dual Rank x4
ECC
Refurbished
Check availability

$362.00

00XH001

00XH001 - Lenovo 16GB DDR4 2400MHz CL17 ECC RDIMM Memory Module

Lenovo
16GB
DDR4
2400MHz
Dual Rank x4
ECC
New
Check availability

$190.00

01AG618

01AG618 - Lenovo 16GB DDR4 2666MHz CL19 ECC RDIMM Memory Module

Lenovo
16GB
DDR4
2666MHz
Dual Rank x4
ECC
Refurbished
Check availability

$190.00

46W0825

46W0825 - Lenovo 8GB DDR4 2400MHz CL17 ECC RDIMM Memory Module

Lenovo
8GB
DDR4
2400MHz
Dual Rank x8
ECC
New
Check availability

$280.00

46W0827

46W0827 - Lenovo 8GB DDR4 2400MHz CL17 ECC RDIMM Memory Module

Lenovo
8GB
DDR4
2400MHz
Dual Rank x8
ECC
New
Check availability

$298.00

4X70G88311

4X70G88311 - Lenovo 32GB DDR4 2133MHz RDIMM ECC Memory Module

Lenovo
32GB
DDR4
2133MHz
Dual Rank x4
ECC
New
Check availability

$305.00

01DE970

01DE970 - Lenovo 32GB DDR4 2400MHz CL17 ECC RDIMM Memory Module

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

$362.00

46W0821

46W0821 - Lenovo 8GB DDR4 2400MHz CL17 ECC RDIMM Memory Module

Lenovo
8GB
DDR4
2400MHz
Single Rank x4
ECC
Refurbished
Check availability

$162.00

753225-S21

753225-S21 - HPE 32GB DDR4 2133MHz CL15 ECC RDIMM Memory Module

HPE
32GB
DDR4
2133MHz
Quad Rank x4
ECC
Refurbished
Check availability

$215.00

774173-001

774173-001 - HPE 16GB DDR4 2133MHz CL15 ECC RDIMM Memory Module

HPE
16GB
DDR4
2133MHz
Dual Rank x4
ECC
Refurbished
Check availability

$162.00

Q2D31A

Q2D31A - HPE 16GB DDR4 2666MHz CL19 ECC RDIMM Memory Module

HPE
16GB
DDR4
2666MHz
Dual Rank x4
ECC
Refurbished
Check availability

$265.00

836220-S21

836220-S21 - HPE 16GB DDR4 2400MHz CL17 ECC RDIMM Memory Module

HPE
16GB
DDR4
DDR4-2400/PC4-19200
Dual Rank x4
ECC
Refurbished
Check availability

$170.00

870840-001

870840-001 - HPE 16GB DDR4 2666MHz CL19 ECC RDIMM Memory Module

HPE
16GB
DDR4
2666MHz
Dual Rank x4
ECC
Refurbished
Check availability

$245.00

851353-B21

851353-B21 - HPE 8GB DDR4 2400MHz CL17 ECC RDIMM Memory Module

HPE
8GB
DDR4
2400MHz
Single Rank x8
ECC
New
Check availability

$180.00

853287-091

853287-091 - HPE 8GB DDR4 2400MHz CL17 ECC RDIMM Memory Module

HPE
8GB
DDR4
2400MHz
Single Rank x8
ECC
New
Check availability

$180.00

P00423-B21

P00423-B21 - HPE 16GB DDR4 2400MHz CL17 ECC RDIMM Memory Module

HPE
16GB
DDR4
2400MHz
Dual Rank x4
ECC
New
Check availability

$235.00

868845-001

868845-001 - HPE 128GB DDR4 2666MHz CL19 ECC RDIMM Memory Module

HPE
128GB
DDR4
2666MHz
Octal Rank x4
ECC
New
Check availability

$1,428.00

839985-B21

839985-B21 - HPE 32GB DDR4 2133MHz CL15 ECC RDIMM Memory Module

HPE
32GB
DDR4
2133MHz
Quad Rank x4
ECC
New
Check availability
Request quote
P06185-001

P06185-001 - HPE 32GB DDR4 2666MHz CL19 ECC RDIMM Memory Module

HPE
32GB
DDR4
DDR4-2666/PC4-21300
Dual Rank x4
ECC
New
Check availability
Request quote
P05590-B21

P05590-B21 - HPE 32GB DDR4 2666MHz CL19 ECC RDIMM Memory Module

HPE
32GB
DDR4
2666MHz
Dual Rank x4
ECC
New
Check availability
Request quote
874540-001

874540-001 - HPE 16GB DDR4 2666MHz CL19 ECC NVDIMM Memory Module

HPE
16GB
DDR4
2666MHz
Single Rank x4
ECC
New
Check availability
Request quote

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