Samsung 64GB DDR4 2666MHz PC4-21300 ECC RDIMM 4Rx4 2S2Rx4 1.2V ECC Registered DIMM Server RAM Memory - M393A8K40B22-CWD
40% cheaper per GB than the average 64GB DDR4 kit we track.
Specification
| Capacity | 64GB |
| Generation | DDR4 |
| Speed | 2666MHz |
| Form factor | DIMM |
| ECC | ECC |
| Buffered | Buffered |
| For | Server |
| Brand | Samsung |
| ASIN | B0B86G8LQ6 |
Price history
Typical price (median) 90-day £456.99 12-month £450.99 12-month low £99.99 All-time low £99.99 (2025-10-08)
Middling Today’s price is 10% below this kit’s typical price for the past year, and it has been cheaper than this for 85% of that year (last on 29 Aug 2026). Why medians, not averages ›
30-day avg £412.4990-day avg £419.24180-day avg £432.87 (averages are pulled up by price spikes; the medians above are the better guide)
Cheaper per GB in the same spec
Same generation, capacity and form factor as this kit, ranked by £/GB. See all ›
| £/GB | Price | Capacity | Manufacturer | For | Type | Form Factor | ECC / Buffered | Description | |
|---|---|---|---|---|---|---|---|---|---|
 | £1.41best £/GB | £90.00★ | 64GB | Dell | Server | DDR4 | DIMM 2666MHz | Buffered | |
 | £3.11 | £199.00 | 64GB | Origin | Server | DDR4 | DIMM 2133MHz | ECCBuffered | |
 | £3.91 | £249.99▼ 16% | 64GB | Kingston | Server | DDR4 | DIMM 2666MHz | ECC | |
 | £4.69 | £299.99 | 64GB (4x16GB) | Yongxinsheng | Desktop | DDR4 | DIMM 2666MHz | Non-ECCUnbuffered | |
 | £5.25 | £336.00 | 64GB | GLOBAL MEMORY | Mac | DDR4 | DIMM 2666MHz | ECCBuffered | |
 | £5.32 | £340.48 | 64GB | SK Hynix | Server | DDR4 | DIMM 2400MHz | ECCBuffered |
About this kit
- Compatibility: all systems that support DDR4 RDIMM
- 64GB 2S2Rx4 PC4-2666V
Samsung RDIMM 64GB PC4 2666 DDR4 2S2Rx4 M393A8K40B22 CWD Server RAM Memory ECC Registered for Dell HP Lenovo Supermicro
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