# DDR4 server RAM (ECC RDIMM): cheapest per GB

 Amazon **$5.44 /GB** typical $6.94 · 18 listings [Buy on Amazon: $696 for 128 GB →](https://www.amazon.com/dp/B09LNKN24F?tag=sharpestai-20) as of 2026-11-05 11:51:38 UTC

 eBay **$4.99 /GB** typical $8.00 · 11 new listings [Buy on eBay: $74.00 + $5.80 ship for 16 GB →](https://sharpest.ai/go/unit/ddr4-server-ram-ecc-rdimm/v1%7C407332064031%7C0) as of 2026-11-05 UTC

Amazon prices are before shipping (free on most items with Prime); eBay prices include shipping. We earn a commission when you buy through these links, at no cost to you.

## Cheapest by capacity

| Capacity | Amazon, per kit | eBay, per kit |
|---|---|---|
| [16 GB](https://sharpest.ai/per-unit/ddr4-server-ram-ecc-rdimm/16gb) | [$90.50](https://www.amazon.com/dp/B09LNMG3PZ?tag=sharpestai-20) | [$79.80](https://sharpest.ai/go/unit/ddr4-server-ram-ecc-rdimm/v1%7C407332064031%7C0) |
| [32 GB](https://sharpest.ai/per-unit/ddr4-server-ram-ecc-rdimm/32gb) | [$181](https://www.amazon.com/dp/B09LNWX9VB?tag=sharpestai-20) | [$250](https://sharpest.ai/go/unit/ddr4-server-ram-ecc-rdimm/v1%7C267779674675%7C0) |
| [64 GB](https://sharpest.ai/per-unit/ddr4-server-ram-ecc-rdimm/64gb) | [$362](https://www.amazon.com/dp/B09LNJVRGZ?tag=sharpestai-20) | — |
| [128 GB](https://sharpest.ai/per-unit/ddr4-server-ram-ecc-rdimm/128gb) | [$696](https://www.amazon.com/dp/B09LNKN24F?tag=sharpestai-20) | — |
| [256 GB](https://sharpest.ai/per-unit/ddr4-server-ram-ecc-rdimm/256gb) | [$1,799](https://www.amazon.com/dp/B08QBRLHCX?tag=sharpestai-20) | — |

Capacity is rounded to the nearest standard size. Per-kit price = listing price ÷ kits in the pack (eBay includes shipping).

## All 29 listings, cheapest per GB first

 Amazon (18) eBay (11)

|  | Item | Size | Price | Per GB |  |
|---|---|---|---|---|---|
|  | 16GB SK Hynix HMA82GR7AFR8N-VK PC4-2666V DDR4 ECC RDIMM Server RAM 16 GB | 16 GB | $79.80 | $4.99 | [eBay →](https://sharpest.ai/go/unit/ddr4-server-ram-ecc-rdimm/v1%7C407332064031%7C0) |
|  | A-Tech 128GB Kit (8x16GB) DDR4 2133MHz PC4-17000 ECC RDIMM 2Rx4 Dual Rank 1.2V ECC Registered DIMM 288-Pin Server & Wor… 128 GB | 128 GB | $696 | $5.44 | [Amazon →](https://www.amazon.com/dp/B09LNKN24F?tag=sharpestai-20) |
|  | A-Tech 16GB DDR4 2400MHz PC4-19200 ECC RDIMM 2Rx4 Dual Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM M… 16 GB | 16 GB | $90.50 | $5.66 | [Amazon →](https://www.amazon.com/dp/B09LNMG3PZ?tag=sharpestai-20) |
|  | A-Tech 64GB Kit (4x16GB) DDR4 2400MHz PC4-19200 ECC RDIMM 2Rx4 Dual Rank 1.2V ECC Registered DIMM 288-Pin Server & Work… 64 GB | 64 GB | $362 | $5.66 | [Amazon →](https://www.amazon.com/dp/B09LNJVRGZ?tag=sharpestai-20) |
|  | A-Tech 32GB Kit (2x16GB) DDR4 2400MHz PC4-19200 ECC RDIMM 2Rx4 Dual Rank 1.2V ECC Registered DIMM 288-Pin Server & Work… 32 GB | 32 GB | $181 | $5.66 | [Amazon →](https://www.amazon.com/dp/B09LNWX9VB?tag=sharpestai-20) |
|  | Innodisk 16GB DDR4 2400 ECC RDIMM PC4-19200 Server RAM M4R0-AGS1BCSJ 16 GB | 16 GB | $96.07 | $6.00 | [eBay →](https://sharpest.ai/go/unit/ddr4-server-ram-ecc-rdimm/v1%7C307172471333%7C0) |
|  | Timetec Hynix IC DDR4 Registered ECC 1.2V 288 Pin RDIMM Server Memory RAM Module Upgrade (DDR4 2666MHz, 64GB KIT(2x32GB) 2R4) 64 GB | 64 GB | $390 | $6.09 | [Amazon →](https://www.amazon.com/dp/B07T25HV18?tag=sharpestai-20) |
|  | Samsung 64GB DDR4 2666MHz PC4-21300 ECC RDIMM 4Rx4 2S2Rx4 1.2V ECC Registered DIMM Server RAM Memory - M393A8K40B22-CWD 64 GB | 64 GB | $399 | $6.23 | [Amazon →](https://www.amazon.com/dp/B0B86G8LQ6?tag=sharpestai-20) |
|  | Timetec Hynix Original 32GB DDR4 2666MHz PC4-21300 Registered ECC 1.2V CL19 2Rx4 Dual Rank 288 Pin RDIMM Server Memory … 32 GB | 32 GB | $203 | $6.34 | [Amazon →](https://www.amazon.com/dp/B08BTR6S7T?tag=sharpestai-20) |
|  | 128GB 2X64GB DDR4 2666MHz PC4-21300 4Rx4 1.2V CL19 288-PIN ECC Registered RDIMM NEMIX RAM Server Memory KIT 128 GB | 128 GB | $826 | $6.45 | [Amazon →](https://www.amazon.com/dp/B0G6GG2JX1?tag=sharpestai-20) |
|  | Micron 16GB DDR4-2666 ECC RDIMM 1Rx4 Server RAM MTA18ASF2G72PDZ-2G6E1 16 GB | 16 GB | $107 | $6.66 | [eBay →](https://sharpest.ai/go/unit/ddr4-server-ram-ecc-rdimm/v1%7C277894264278%7C0) |
|  | A-Tech 128GB Kit (8x16GB) DDR4 2400MHz PC4-19200 ECC RDIMM 2Rx8 Dual Rank 1.2V ECC Registered DIMM 288-Pin Server & Wor… 128 GB | 128 GB | $878 | $6.86 | [Amazon →](https://www.amazon.com/dp/B0CCT1PDYL?tag=sharpestai-20) |
|  | Micron Memory Bundle with 256GB (8 x 32GB) DDR4 PC4-21333 2666MHz RDIMM (8 x MTA36ASF4G72PZ-2G6E1), Dual Ranked Registe… 256 GB | 256 GB | $1,799 | $7.03 | [Amazon →](https://www.amazon.com/dp/B08QBRLHCX?tag=sharpestai-20) |
|  | Samsung 32GB DDR4 2400MHz PC4-19200 ECC RDIMM 2Rx4 Dual Rank 1.2V Registered DIMM 288-Pin Server RAM Memory M393A4K40CB1-CRC 32 GB | 32 GB | $229 | $7.15 | [Amazon →](https://www.amazon.com/dp/B078V19STQ?tag=sharpestai-20) |
|  | Supermicro 16GB DDR4 2133 ECC RDIMM PC4-17000 1Rx4 Server RAM DR416L-HL01-ER21 T 16 GB | 16 GB | $116 | $7.25 | [eBay →](https://sharpest.ai/go/unit/ddr4-server-ram-ecc-rdimm/v1%7C306922443092%7C0) |
|  | A-Tech 64GB Kit (2x32GB) DDR4 2666MHz PC4-21300 ECC RDIMM 2Rx4 Dual Rank 1.2V ECC Registered DIMM 288-Pin Server & Work… 64 GB | 64 GB | $474 | $7.40 | [Amazon →](https://www.amazon.com/dp/B0BPN48JTW?tag=sharpestai-20) |
|  | SK HYNIX 32GB PC4-2666V-R DDR4 Registered ECC 2RX4 Memory RDIMM HMA84GR7CJR4N-VK 32 GB | 32 GB | $249 | $7.78 | [Amazon →](https://www.amazon.com/dp/B07JL11HX9?tag=sharpestai-20) |
|  | NEW Micron MTA36ASF4G72PZ-2G6E1QI 32GB DDR4-2666 ECC RDIMM 2Rx4 Server RAM 32 GB | 32 GB | $250 | $7.81 | [eBay →](https://sharpest.ai/go/unit/ddr4-server-ram-ecc-rdimm/v1%7C267779674675%7C0) |
|  | Cisco UCS-MR-X32G2RT-H 32GB DDR4-2933 ECC RDIMM Server RAM NEW SEALED 32 GB | 32 GB | $256 | $8.00 | [eBay →](https://sharpest.ai/go/unit/ddr4-server-ram-ecc-rdimm/v1%7C198707419275%7C0) |
|  | OWC 64GB (4x16GB) DDR4 3200MHz ECC RDIMM 2Rx4 288-pin Memory RAM 64 GB | 64 GB | $554 | $8.65 | [Amazon →](https://www.amazon.com/dp/B0CC1667Y2?tag=sharpestai-20) |
|  | OWC 128GB (8x16GB) DDR4 3200MHz ECC RDIMM 2Rx4 288-pin Memory RAM 128 GB | 128 GB | $1,109 | $8.66 | [Amazon →](https://www.amazon.com/dp/B0CC15BGCP?tag=sharpestai-20) |
|  | Lenovo 4X77A08619 32GB (2x16GB) DDR4-2666 ECC RDIMM Server RAM Open Box/NEW 32 GB | 32 GB | $296 | $9.25 | [eBay →](https://sharpest.ai/go/unit/ddr4-server-ram-ecc-rdimm/v1%7C227567541324%7C0) |
|  | 32GB DDR4 PC4-25600 ECC RDIMM (New Unopened HPE P21674-001) Server Memory RAM 32 GB | 32 GB | $306 | $9.55 | [eBay →](https://sharpest.ai/go/unit/ddr4-server-ram-ecc-rdimm/v1%7C327417502359%7C0) |
|  | NEW Kingston 16GB DDR4 2666 ECC RDIMM Server RAM KSM26RD8/16HDI Registered 16 GB | 16 GB | $170 | $10.62 | [eBay →](https://sharpest.ai/go/unit/ddr4-server-ram-ecc-rdimm/v1%7C298556617642%7C0) |
|  | NEMIX RAM 256GB (4X64GB) DDR4 3200MHz PC4-25600 2Rx4 1.2V CL22 288-PIN ECC RDIMM Registered Server Memory KIT 256 GB | 256 GB | $2,835 | $11.07 | [Amazon →](https://www.amazon.com/dp/B0CSLRRDKR?tag=sharpestai-20) |
|  | Kingston 32GB DDR4 3200MHz PC4-25600 ECC RDIMM Server Memory RAM (KTD-PE432/32G) 32 GB | 32 GB | $358 | $11.17 | [eBay →](https://sharpest.ai/go/unit/ddr4-server-ram-ecc-rdimm/v1%7C128103496929%7C0) |
|  | NEMIX RAM 32GB (2X16GB) DDR4 3200MHz PC4-25600 2Rx8 1.2V CL22 288-PIN ECC RDIMM Registered Server Memory KIT 32 GB | 32 GB | $364 | $11.37 | [Amazon →](https://www.amazon.com/dp/B09FQG62M8?tag=sharpestai-20) |
|  | NEMIX RAM 256GB (8X32GB) DDR4 3200MHz PC4-25600 2Rx4 1.2V CL22 288-PIN ECC RDIMM Registered Server Memory KIT 256 GB | 256 GB | $3,427 | $13.39 | [Amazon →](https://www.amazon.com/dp/B0CB6WV9X8?tag=sharpestai-20) |
|  | 16GB DDR4-2400 PC4-19200 ECC RDIMM 4Rx4 Server RAM 288-Pin for Dell 16 GB | 16 GB | $246 | $15.37 | [eBay →](https://sharpest.ai/go/unit/ddr4-server-ram-ecc-rdimm/v1%7C295082199191%7C0) |

Amazon as of 2026-11-05 11:51:38 UTC: Amazon's own price, else its lowest new offer, before shipping and tax (via Keepa); product prices and availability are accurate as of the date/time indicated and are subject to change. eBay: new Buy It Now listings from US sellers as of 2026-11-05 UTC, item plus shipping.

Size comes from the seller's unit count or the listing title; check the listing before buying. As an Amazon Associate and eBay Partner, Sharpest earns from qualifying purchases.

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## More memory (ram)

[DDR4 laptop RAM (SODIMM) $3.51/GB](https://sharpest.ai/per-unit/ddr4-laptop-ram-sodimm)[DDR5 laptop RAM (SODIMM) $10.81/GB](https://sharpest.ai/per-unit/ddr5-laptop-ram-sodimm)[DDR5 server RAM (ECC RDIMM) $30.75/GB](https://sharpest.ai/per-unit/ddr5-server-ram-ecc-rdimm)[DDR4 desktop RAM $3.12/GB](https://sharpest.ai/per-unit/ddr4-desktop-ram)[DDR5 desktop RAM $8.12/GB](https://sharpest.ai/per-unit/ddr5-desktop-ram)

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As of 2026-11-05. Canonical page: https://sharpest.ai/per-unit/ddr4-server-ram-ecc-rdimm