Samsung 64GB DDR4 2666MHz PC4-21300 ECC RDIMM 4Rx4 2S2Rx4 1.2V ECC Registered DIMM Server RAM Memory - M393A8K40B22-CWD
Bottom line: The Samsung 64GB DDR4 2666MHz PC4-21300 ECC RDIMM 4Rx4 2S2Rx4 1.2V ECC is a specs-and-price decision rather than a crowd-consensus one in the memory (ram) category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.
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Pros & Cons
Pros
- ✓ Compatibility: all systems that support DDR4 RDIMM
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated
Manufacturer description
Samsung RDIMM 64GB PC4 2666 DDR4 2S2Rx4 M393A8K40B22 CWD Server RAM Memory ECC Registered for Dell HP Lenovo Supermicro
SpecPicks Verdict
SpecPicks scored Samsung 64GB DDR4 2666MHz PC4-21300 ECC RDIMM 4Rx4 2S2Rx4 1.2V ECC… using a rating × review-volume × price-fit model applied to published specs and reviews across the memory (ram) category. Compare with similarly-priced alternatives in the memory (ram) category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for memory (ram) of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- Compatibility: all systems that support DDR4 RDIMM
- 64GB 2S2Rx4 PC4-2666V
Full Specifications
| Brand | Samsung |
|---|---|
| Voltage | 1.2 Volts |
| RAM Size | 64 GB |
| Model Name | M393A8K40B22-CWD |
| Form Factor | DIMM |
| Memory Speed | 2666 MHz |
| Model Number | M393A8K40B22-CWD |
| Compatibility | all systems that support DDR4 RDIMM |
| Number of Pins | 240 |
| Mfr Part Number | M393A8K40B22-CWD |
| Memory Generation | DDR4 |
| Compatible Devices | Server |
| Data Transfer Rate | 2666 MHz |
| Memory Form Factor | DIMM, RDIMM |
| Additional Features | Ecc, Lightweight, Registered Memory |
| Computer Memory Size | 64 GB |
| Warranty Description | 5 |
| RAM Memory Technology | DDR4 |
Ready to buy?
Samsung 64GB DDR4 2666MHz PC4-21300 ECC RDIMM 4Rx4 2S2Rx4 1.2V ECC Registered DIMM Server RAM Memory - M393A8K40B22-CWD is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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