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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
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11879 parts

Part #BrandCapacityTypeSpeedRankECCConditionAvailabilityPrice
HMT41GR7MFR8A-PBT8

HMT41GR7MFR8A-PBT8 - Hynix 8GB DDR3 1600MHz CL11 ECC RDIMM Memory

Hynix
8GB
DDR3
1600MHz
Dual Rank x8
ECC
New
Check availability
Request quote
HYMP151P72CP4-Y5

HYMP151P72CP4-Y5 - Hynix 4GB RDIMM 240-Pin Memory Module

Hynix
4GB
DDR2
667MHz
Dual Rank x4
ECC
New
Check availability
Request quote
HYMP525F72BP4N2-Y5

HYMP525F72BP4N2-Y5 - Hynix 2GB FB-DIMM 240-Pin Memory Module

Hynix
2GB
DDR2
667MHz
Dual Rank x4
ECC
New
Check availability
Request quote
HMT31GR7CR4A-H9

HMT31GR7CR4A-H9 - Hynix 8GB DDR3 1333MHz CL9 ECC RDIMM Memory Module

Hynix
8GB
DDR3
1333MHz
Dual Rank x4
ECC
New
Check availability
Request quote
HMT31GR7CFRA-PB

HMT31GR7CFRA-PB - Hynix 8GB DDR3 1600MHz CL11 ECC RDIMM Memory Module

Hynix
8GB
DDR3
1600MHz
Dual Rank x4
ECC
New
Check availability
Request quote
HMT31GR7EFR4A-H9T3

HMT31GR7EFR4A-H9T3 - Hynix 8GB DDR3 1333MHz CL9 ECC RDIMM Memory

Hynix
8GB
DDR3
1333MHz
Dual Rank x4
ECC
New
Check availability
Request quote
HMT82GV7AMR4A-PB

HMT82GV7AMR4A-PB - Hynix 16GB DDR3 1600MHz CL11 ECC VLP RDIMM Memory

Hynix
16GB
DDR3
1600MHz
Dual Rank x4
ECC
Refurbished
Check availability

$192.00

HMT451R7DFR8A-PB

HMT451R7DFR8A-PB - Hynix 4GB DDR3 1600MHz CL11 ECC RDIMM Memory Module

Hynix
4GB
DDR3
1600MHz
Single Rank x8
ECC
New
Check availability
Request quote
HMTA8GL7AHR4C-PB

HMTA8GL7AHR4C-PB - Hynix 64GB DDR3 1600MHz CL11 ECC RDIMM Memory

Hynix
64GB
DDR3
1600MHz
Octal Rank x4
ECC
Refurbished
Check availability

$185.00

HMT42GR7CMR4C-G7

HMT42GR7CMR4C-G7 - Hynix 16GB DDR3 1066MHz ECC RDIMM Memory Module

Hynix
16GB
DDR3
1066 MHz
Quad Rank x4
ECC
Refurbished
Check availability

$125.00

HMCG94MEBQA

HMCG94MEBQA - Hynix 64GB DDR5 4800MHz ECC RDIMM Memory Module

Hynix
64GB
DDR5
4800 MHz
Dual Rank x4
ECC
New
Check availability

$3,218.00

HMA82GR8AMR4N-TF

HMA82GR8AMR4N-TF - Hynix 16GB DDR4 2133MHz CL15 ECC VLP RDIMM Memory

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

$185.00

HMCG78AEBEA

HMCG78AEBEA - Hynix 16GB DDR5 4800MHz 288-Pin UDIMM 1Rx8 Memory

Hynix
16GB
DDR5
4800 MHz
Single Rank x8
ECC Unbuffered
New
Check availability
Request quote
HMT42GR7MFR4C-H9

HMT42GR7MFR4C-H9 - Hynix 16GB DDR3 1333MHz ECC RDIMM Memory Module

Hynix
16GB
DDR3
1333 MHz
Dual Rank x4
ECC
Refurbished
Check availability

$62.00

HMCGM4MGBRB

HMCGM4MGBRB - Hynix 96GB DDR5 5600MHz ECC RDIMM Memory Module

Hynix
96GB
DDR5
5600 MHz
Dual Rank x4
ECC
Refurbished
Check availability

$4,100.00

HMCG78AEBRA

HMCG78AEBRA - Hynix 16GB DDR5 4800MHz ECC RDIMM Memory Module

Hynix
16GB
DDR5
4800 MHz
Single Rank x8
ECC
Refurbished
Check availability

$905.00

HMCG88MEBEA

HMCG88MEBEA - Hynix 32GB DDR5 4800MHz 288-Pin UDIMM 2Rx8 Memory

Hynix
32GB
DDR5
4800 MHz
Dual Rank x8
ECC Unbuffered
New
Check availability
Request quote
HMAA4GU6AJR8N-VK

HMAA4GU6AJR8N-VK - Hynix 32GB DDR4 2666MHz 288-Pin UDIMM 2Rx8 Memory

Hynix
32GB
DDR4
2666 MHz
Dual Rank x8
Non-ECC Unbuffered
New
Check availability

$505.00

HMCT14MEERA

HMCT14MEERA - Hynix 256GB DDR5 4800MHz 288-Pin RDIMM 8Rx4 Memory

Hynix
256GB
DDR5
4800 MHz
Octal Rank x4
ECC Registered
Refurbished
Check availability

$15,422.00

HMCGM4MHBRB265N

HMCGM4MHBRB265N - Hynix 96GB DDR5 6400MHz ECC RDIMM Memory Module

Hynix
96GB
DDR5
6400 MHz
Dual Rank x4
ECC
Refurbished
Check availability

$5,685.00

HMT125R7BFR4C-H9

HMT125R7BFR4C-H9 - Hynix 2GB DDR3 1333MHz CL9 ECC RDIMM Memory Module

Hynix
2GB
DDR3
1333MHz
Single Rank x4
ECC
New
Check availability
Request quote
HMT42GR7CMR4C-H9

HMT42GR7CMR4C-H9 - Hynix 16GB DDR3 1333MHz CL9 ECC RDIMM Memory Module

Hynix
16GB
DDR3
1333MHz
Quad Rank x4
ECC
Refurbished
Check availability

$120.00

HMT84GR7MMR4C-G7

HMT84GR7MMR4C-G7 - Hynix 32GB DDR3 1066MHz CL7 ECC RDIMM Memory Module

Hynix
32GB
DDR3
1066MHz
Quad Rank x4
ECC
New
Check availability
Request quote
HMT351R7BFR4A-H9

HMT351R7BFR4A-H9 - Hynix 4GB DDR3 1333MHz CL9 ECC RDIMM Memory Module

Hynix
4GB
DDR3
1333MHz
Single Rank x4
ECC
New
Check availability

$152.00

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