512GB Server RAM

512GB modules are the extreme end of server memory — the highest per-slot density available, for in-memory databases, huge VM hosts and HPC nodes that need maximum RAM in a fixed number of slots. At this capacity you're firmly in LRDIMM (Load-Reduced) or multi-die stacked territory, and platform support is narrow, so every module here is sold by exact manufacturer part number and JEDEC spec, from HPE, Dell and the major DRAM makers. We list New and Refurbished stock together so you can weigh a factory module against a tested pull for the same slot. Because 512GB parts are the least forgiving about platform support, rank and voltage, confirm your server explicitly lists 512GB DIMM support before ordering — or send the model via the bulk-quote link and we'll verify the exact part. In stock, fast US shipping, warranty-backed, and purchase orders welcome.

512GB as a kit or as single modules?

512GB of server memory can be one high-density module or a matched set of smaller ones. Which is right depends on the slots you have free and the price per gigabyte on the day.

Kit of 8 x 64GB: The most common way to reach 512GB: eight 64GB RDIMMs fill one DIMM per channel on a dual-socket server. Best price per GB and full memory bandwidth, but it uses eight slots.
Kit of 4 x 128GB: Half the slots for the same capacity, leaving room to grow to 1TB later. 128GB modules carry a per-module premium and are usually LRDIMM on DDR4, so check your platform supports them.
Single 512GB module: Available on DDR5 platforms (RDIMM) and a few DDR4 LRDIMM parts. Maximum density per slot for in-memory databases; confirm the CPU generation supports the module size.

Build it from smaller modules

64GB Server RAMThe workhorse module - 8 of these make 512GB 128GB Server RAM4 modules to 512GB, room to double later All server memoryEvery capacity, DDR3 to DDR5

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

Does my server support 512GB modules?+

512GB DIMM support is rare and platform-specific — most servers cap well below it. Check your server's memory QVL for explicit 512GB support, or send the model via the bulk-quote link and we'll confirm before you buy.

Why are 512GB modules so much more than 2×256GB?+

Maximum-density DIMMs command a premium for the stacking technology and binning involved. If your platform has free slots, 256GB modules are usually far better value per GB — compare against your slot budget.

Do you accept purchase orders?+

Yes — POs are welcome and we ship fast from the US. For a matched, same-spec memory build, use the bulk-quote link and we'll assemble and verify it first.

128GB Server Memory (LRDIMM / 3DS RDIMM)64GB Server RAM (ECC)DDR4 ECC Server Memory

512GB Server RAM

512GB as a kit or as single modules?

Build it from smaller modules

New vs Recertified vs Refurbished

Frequently asked questions

Related collections

512GB Server RAM

512GB as a kit or as single modules?

Build it from smaller modules

New vs Recertified vs Refurbished

Frequently asked questions

Related collections