Key takeaways

  • As of September 2026, large DRAM orders from the makers carry lead times beyond 40 weeks and distributor quotes hold for 48 to 72 hours, so the buying process has to be faster than the usual approval cycle.
  • Refurbished and surplus modules are the in-stock channel: the part ships from a shelf, not from a wafer allocation, which is why they are priced against the spot market rather than contract price.
  • A refurbished module is a sound buy when the part number, rank, speed grade and module type match the platform guide and the seller states the condition per listing; the risks to manage are mismatched types and mislabelled parts rather than the age of the silicon.
  • Ask for a written quote that names part numbers, condition, quantity and a price-valid date, and buy the whole set in one order.

What changed in 2026

Server memory went from a commodity with next-day availability to an allocated part. The three DRAM makers moved wafer capacity to high-bandwidth memory for AI accelerators; Samsung and SK Hynix held fewer than 10 days of finished inventory in early September per KB Securities (TechTimes, 7 September 2026); and enterprise buyers face lead times of 40-plus weeks on large orders with distributor quotes narrowed to 48 to 72 hours (same report). The fixed contract price of a 64GB DDR5 server module stood at $1,500 on 15 September 2026, with spot trades reported at $3,100 (Seoul Economic Daily, 17 September 2026), and the shortage is expected to persist through 2027 (CSIS, 17 September 2026).

Two consequences follow for anyone who has to keep servers running. First, the price you are quoted today is not the price next week, in either direction but mostly up. Second, the only memory that ships this month is memory that already exists: OEM surplus, decommissioned fleet pulls, and distributor stock.

Where in-stock memory comes from

The refurbished channel is fed by data centre decommissions, OEM spare-parts surplus and overstock from system builders. The modules are the same Samsung, Micron and Hynix parts the OEMs fit, often still carrying the Dell, HPE or Lenovo part number label, and they were qualified for the platform when the server was built. A reseller like us holds them on a shelf, so the lead time is shipping time. That is also why the price tracks the spot market rather than the makers' contract price: the part is available now, and availability is what the shortage repriced.

Our catalogue on 20 September 2026 listed 718 priced, in-stock 16GB DDR4 RDIMM part numbers, 637 at 32GB and 208 at 64GB, and 69 priced 64GB DDR5 RDIMMs. Live counts are on the collection pages: DDR4-3200, 64GB DDR4, 64GB DDR5, 32GB DDR5.

What to check before you buy a refurbished module

  1. Part number against the platform memory guide. Dell, HPE and Lenovo publish which OEM part numbers are qualified for each server generation and speed. A manufacturer part number (Samsung M393..., Micron MTA..., Hynix HMA...) can be cross-referenced to the OEM number it ships under.
  2. Module type and rank. RDIMM, LRDIMM and UDIMM cannot be mixed; single-rank, dual-rank and quad-rank modules have population rules in the same guide. Order what the system already holds unless you are replacing the full set.
  3. Speed grade. A faster module runs at the platform's speed, so DDR4-3200 is safe on a 2933 or 2666 system, but a slower module pulls the whole channel down.
  4. Condition and testing. Every listing on our site states its condition (new, or refurbished by grade). Ask any seller whether refurbished modules are tested before shipping; the ECC on a server module also reports correctable errors to the platform, so a marginal part shows up in the system log rather than as silent corruption.
  5. Labels. Counterfeit memory exists at the consumer end of the market. Buy from a seller who states the manufacturer, part number and condition per listing and accepts returns against the part number quoted.

How to run the purchase this quarter

  1. List the exact part numbers and counts from the memory guide, not "512GB of DDR4".
  2. Request a volume quote with the platform, module type, capacity, count and the date you need it by, and ask for the part numbers, the condition, the quantity available and a price-valid date on the quote.
  3. Approve inside the quote's validity window; a quote from last week is a new quote.
  4. Buy the set in one order so every module matches.

Prices by capacity, with the market context and sources, are in server memory prices, September 2026. For the choice between filling a DDR4 platform and refreshing to DDR5, see DDR4 or DDR5 for a server refresh.