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Server RAM & Memory

Server memory — the ECC, buffered DIMMs that keep production hosts stable. This hub covers our full range of enterprise RAM sold by exact manufacturer part number: DDR3, DDR4 and DDR5, ECC Registered (RDIMM) and Load-Reduced (LRDIMM), across 8GB through 512GB capacities and the common speeds, from Micron, Samsung, SK Hynix and the HPE and Dell OEM-serialized parts your iLO or iDRAC expects. Filter by capacity, brand and condition, or jump to a capacity page below. We list New and Refurbished stock together so you can compare a factory module against a tested pull for the same slot. Server memory is unforgiving about rank, voltage and OEM keying, so match your platform's population rules — or use the bulk-quote link and we'll confirm the part against your exact server model. Fast US shipping, warranty-backed, purchase orders welcome.

Shop by module capacity

16GB32GB64GB128GB256GB512GB

RDIMM, LRDIMM or UDIMM: which DIMM type do you need?

Server memory comes in three buffered/unbuffered designs. A server accepts only the type its population rules list, and RDIMM and LRDIMM can never be mixed in one system.

RDIMM (Registered)
A register buffers the address and command lines, so the memory controller sees one load per DIMM. The standard choice for most 16GB-64GB modules in ProLiant, PowerEdge, ThinkSystem and Supermicro servers.
LRDIMM (Load-Reduced)
Buffers the data lines as well, which lets a channel carry more, larger modules at full speed. Used for 64GB-512GB high-density builds where total capacity matters more than per-module cost.
UDIMM / ECC UDIMM (Unbuffered)
No register - the controller drives the chips directly. Found in entry servers, workstations and micro-servers (Xeon E, some AMD platforms) with two DIMMs per channel at most. Not interchangeable with RDIMM.

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's the difference between New, Recertified and Refurbished drives?+

New is factory-sealed with the full manufacturer warranty. Recertified is OEM-restored to specification with low power-on hours and our own warranty — the same capacity for a lower price. Refurbished is a tested, wiped working pull. All are sold by exact part number and warranty-backed.

Do you accept purchase orders and volume pricing?+

Yes — we ship fast from the US and welcome POs. For quantity or a matched set, use the bulk-quote link on any product for pricing and a compatibility check.

Related collections

64GB Server RAM (ECC)32GB Server Memory (RDIMM / LRDIMM)128GB Server Memory (LRDIMM / 3DS RDIMM)DDR4 ECC Server Memory
Shop by brandMicron1770Hynix1672HP1568Samsung1541Dell1502Kingston885IBM787HPE740

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11879 parts

Part #BrandCapacityTypeSpeedRankECCConditionAvailabilityPrice
M391T2863QZ3-CF7

M391T2863QZ3-CF7 - Samsung 1GB UDIMM 240-Pin Memory Module

Samsung
1GB
DDR2
800MHz
Single Rank x8
ECC
New
Check availability
Request quote
U733C

U733C - Dell 1GB UDIMM 240-Pin Memory Module

Dell

Showing 4,441-4,464 of 11,879

1GB
DDR2
667MHz
Dual Rank x8
ECC
Refurbished
Check availability

$50.00

713979-S21

713979-S21 - HP 8GB DDR3 1600MHz CL11 ECC UDIMM Memory Module

HP
8GB
DDR3
1600MHz
Dual Rank x8
ECC
New
Check availability
Request quote
444908-051

444908-051 - HP 1GB UDIMM 240-Pin Memory Module

HP
1GB
DDR2
800MHz
Dual Rank x8
ECC
Refurbished
Check availability

$98.00

713980-B21

713980-B21 - HP 8GB DDR3 1600MHz CL11 ECC UDIMM Memory Module

HP
8GB
DDR3
1600MHz
Dual Rank x8
ECC
New
Check availability
Request quote
733483-001

733483-001 - HP 4GB DDR3 1866MHz CL13 ECC UDIMM Memory Module

HP
4GB
DDR3
1866MHz
Dual Rank x8
ECC
New
Check availability
Request quote
44T1574

44T1574 - IBM 2GB DDR3 1333MHz CL9 ECC UDIMM Memory Module

IBM
2GB
DDR3
1333MHz
Single Rank x8
ECC
New
Check availability
Request quote
KTH-PL313E/1G

KTH-PL313E/1G - Kingston 1GB DDR3 1333MHz CL9 ECC UDIMM Memory Module

Kingston
1GB
DDR3
1333MHz
Single Rank x8
ECC
Refurbished
Check availability

$58.00

KTD-PE316E/8G

KTD-PE316E/8G - Kingston 8GB DDR3 1600MHz CL11 ECC UDIMM Memory Module

Kingston
8GB
DDR3
1600MHz
Dual Rank x8
ECC
New
Check availability
Request quote
E2Q91AT

E2Q91AT - HP 4GB DDR3 1866MHz CL13 ECC UDIMM Memory Module

HP
4GB
DDR3
1866MHz
Dual Rank x8
ECC
New
Check availability
Request quote
QC447AA

QC447AA - HP 2GB DDR3 1333MHz ECC Unbuffered UDIMM 1.5V 240-Pin Memory

HP
2GB
DDR3
1333MHz
Dual Rank x8
ECC
Refurbished
Check availability

$70.00

46C7442

46C7442 - IBM 512MB 240-Pin UDIMM Memory Module

IBM
512 MB
DDR2
800MHz
Single Rank x8
ECC
New
Check availability
Request quote
0B47377

0B47377 - IBM 4GB DDR3 1600MHz ECC Unbuffered UDIMM 1.5V 240p Memory

IBM
4GB
DDR3
1600MHz
Single Rank x8
ECC
New
Check availability
Request quote
HMT125U7BFR8C-H9

HMT125U7BFR8C-H9 - Hynix 2GB DDR3 1333MHz CL9 ECC UDIMM Memory Module

Hynix
2GB
DDR3
1333MHz
Dual Rank x8
ECC
New
Check availability
Request quote
41Y2728

41Y2728 - IBM 1GB UDIMM 240-Pin Memory Module

IBM
1GB
DDR2
667MHz
Dual Rank x8
ECC
Refurbished
Check availability

$58.00

00D5018

00D5018 - IBM 8GB DDR3 1600MHz CL11 ECC UDIMM Memory Module

IBM
8GB
DDR3
1600MHz
Dual Rank x8
ECC
Refurbished
Check availability

$142.00

E2Q93AA

E2Q93AA - HP 8GB DDR3 1866MHz ECC Unbuffered UDIMM 1.5V 240-Pin Memory

HP
8GB
DDR3
1866MHz
Dual Rank x8
ECC
New
Check availability
Request quote
35H8751

35H8751 - IBM 64MB 133MHz PC133 ECC DIMM Memory

IBM
64 MB
DIMM
133MHz
-
ECC
Refurbished
Check availability

$58.00

KVR13E9K2/16I

KVR13E9K2/16I - Kingston 16GB (2 x 8GB) UDIMM 1333MHz Unbuffered RAM

Kingston
16GB
DDR3
1333MHz
Dual Rank x8
ECC
New
Check availability
Request quote
R588H

R588H - Dell 4GB (2 x 2GB) UDIMM 1066MHz Unbuffered RAM

Dell
4GB
DDR3
1066MHz
Dual Rank x8
ECC
New
Check availability
Request quote
09P0550

09P0550 - IBM 256MB 100MHz PC100 ECC DIMM Memory

IBM
256 MB
DIMM
100MHz
-
ECC
Refurbished
Check availability

$58.00

27H5256

27H5256 - IBM 128MB 66MHz PC66 ECC DIMM Memory

IBM
128 MB
DIMM
66MHz
-
ECC
New
Check availability
Request quote
P0002743-001

P0002743-001 - HP 8GB DDR4 2400MHz CL17 ECC RDIMM Memory Module

HP
8GB
DDR4
2400MHz
Single Rank x4
ECC
New
Check availability
Request quote
ACT16GHR72U4J1866C1-B051

ACT16GHR72U4J1866C1-B051 - InnoDisk 16GB DDR3 1866MHz ECC RDIMM Memory

InnoDisk
16GB
DDR3
1866MHz
Dual Rank x4
ECC
New
Check availability
Request quote
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