128GB modules are the high-density option for memory-bound workloads — in-memory databases, large VM hosts and analytics nodes that need maximum RAM per slot. At this capacity you're usually looking at LRDIMM or 3DS (stacked) RDIMM, and platform support is specific, so every module here is sold by exact manufacturer part number and JEDEC spec: DDR4 and DDR5 from Micron, Samsung, SK Hynix and the HPE and Dell OEM-serialized equivalents. We list New and Refurbished stock together so you can weigh a factory module against a tested pull for the same slot. 128GB parts are the least forgiving about rank, voltage and platform keying, so confirm your server's support and population rules before ordering — or use the bulk-quote link and we'll verify the part against your exact model. In stock, fast US shipping, warranty-backed, and purchase orders welcome.
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.
Not sure which to pick? Read our New vs Recertified vs Refurbished guide.
128GB LRDIMM/3DS support is platform-specific — many older servers cap at 64GB per slot. Check your server's memory QVL, or send the model via the bulk-quote link and we'll confirm before you buy.
Both reach high per-slot capacity; which one your server accepts depends on its memory controller and BIOS. Match the exact type your platform's documentation specifies.
Yes — POs are welcome. For a matched, same-spec set across a server, use the bulk-quote link and we'll assemble and verify it first.
570 parts
MTC40F2047S1RC56BB2R - Micron 128GB DDR5 5600MHz ECC RDIMM Memory
$8,812.00
MTC40F2047S1RC56BB1 - Micron 128GB DDR5 5600MHz ECC RDIMM Memory
$6,175.00
MTC40F2047S1RC56BR - Micron 128GB DDR5 5600MHz ECC RDIMM Memory Module
$5,992.00
MTC40F2047S1RC56BB2 - Micron 128GB DDR5 5600MHz ECC RDIMM Memory
$5,750.00
MTC40F2047S1RC56BB1R - Micron 128GB DDR5 5600MHz ECC RDIMM Memory
$5,750.00
MTC40F2047S1RC56B - Micron 128GB DDR5 5600MHz ECC RDIMM Memory Module
$5,992.00
P78353-001 - HPE 128GB DDR5 5600MHz ECC RDIMM Memory Module
S4L15A - HPE 128GB DDR5 5600MHz ECC RDIMM Memory Module
P77349-001 - HPE 128GB DDR5 5600MHz ECC RDIMM Memory Module
R9Q20A - HPE 128GB DDR5 4800MHz ECC RDIMM Memory Module
P43336-6A1 - HPE 128GB DDR5 4800MHz ECC RDIMM Memory Module
S5D52A - HPE 128GB DDR5 4800MHz ECC RDIMM Memory Module
P75395-001 - HPE 128GB DDR5 5600MHz ECC RDIMM Smart Memory
P64988-K21 - HPE 128GB DDR5 6400MHz ECC RDIMM Smart Memory
S4J68A - HPE 128GB DDR5 5600MHz ECC RDIMM Memory Module
P64988-H21 - HPE 128GB DDR5 6400MHz ECC RDIMM Smart Memory
P64752-001 - HPE 128GB DDR5 4800MHz ECC DIMM Memory Module
P69730-K21 - HPE 128GB DDR5 6400MHz ECC RDIMM Smart Memory
P76200-001 - HPE 128GB DDR5 4800MHz ECC RDIMM Smart Memory Module
P73135-B21 - HPE 128GB DDR5 4800MHz ECC RDIMM Smart Memory Module
P76180-001 - HPE 128GB DDR5 4800MHz ECC RDIMM Smart Memory Module
P73127-K21 - HPE 128GB DDR5 4800MHz ECC RDIMM Smart Memory Module
P73127-B21 - HPE 128GB DDR5 4800MHz ECC RDIMM Smart Memory Module
P74424-B21 - HPE 128GB DDR5 5600MHz ECC RDIMM Smart Memory
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