16GB DDR4-2666 SODIMM — used server RAM prices
As of October 22, 2026, a used 16GB DDR4-2666 SODIMM costs $32.54/GB shipped ($521 a stick) at the low end of eBay's market: it's the only live single-stick listing.
SODIMM memory rated at 2666 MT/s — sellers also list this speed as PC4-21300 or 2666V. 16GB sticks fit DDR4 server platforms (Xeon E5 v3/v4, Xeon Scalable gen 1–2, EPYC Naples/Rome). Prices below include shipping. The low end is the 10th-percentile ask: one in ten single-stick listings ask that much per GB or less, so it's a price you can find near the top of a search sorted by price. It and the median come from single-stick, fixed-price listings only, so multi-stick lots and auction bids can't skew them. Refreshed from live eBay listings twice daily.
Price trend — $/GB, single sticks
3 cheapest live listings (fixed price, parts-only excluded)
eBay affiliate disclosure: The listing links below lead to eBay. DIMMsum may earn a commission if you make a purchase.
| Listing | Config | Price shipped | $/GB |
|---|---|---|---|
| Synology D4ECSO-2666-16G 64GB (4x16GB) DDR4-2666 ECC Unbuffered SO-DIMM (eBay affiliate link) Brand New |
4×16GB | $256.22 | $4.003 |
| SK hynix 32GB (2x16GB) DDR4-2666 ECC Unbuffered SO-DIMM 2Rx8 PC4-21300 (eBay affiliate link) Pre-Owned |
2×16GB | $400.00 | $12.500 |
| Synology D4ES01-16G 16GB DDR4-2666 ECC Unbuffered SO-DIMM 260-Pin (eBay affiliate link) Brand New |
1×16GB | $520.70 | $32.544 |
Compare interactively on the live $/GB scatter — median market lines, Pareto frontier, and every spec side by side.