Kingston DDR4-2666 ECC RDIMM 1x64GB vs Samsung DDR4-3200 ECC RDIMM 1x64GB
Samsung DDR4-3200 ECC RDIMM 1x64GB has the lower true latency of the two at 13.75 ns, against 14.25 ns for Kingston DDR4-2666 ECC RDIMM 1x64GB. The site holds no current price for at least one of these, so what follows compares specifications alone.
| Specification | KingstonDDR4-2666 ECC RDIMM 1x64GB | SamsungDDR4-3200 ECC RDIMM 1x64GB |
|---|---|---|
| Capacity (GB) | 64 | 64 |
| Speed (MT/s) | 2666 | 3200better |
| 19 | 22 | |
| True latency (ns) | 14.25 | 13.75better |
| Current best price | — | $676.62at Amazon.ca · captured 2026-09-13 |
| Price per GB | — | $10.57 |
No tracked price for Kingston DDR4-2666 ECC RDIMM 1x64GB at the moment. Nothing has been captured for it that this page will stand behind, so its price cells stay empty rather than carrying a stale figure.
Kingston DDR4-2666 ECC RDIMM 1x64GB vs Samsung DDR4-3200 ECC RDIMM 1x64GB in detail
True latency
Samsung DDR4-3200 ECC RDIMM 1x64GB is the lower-latency kit at 13.75 ns against 14.25 ns for Kingston DDR4-2666 ECC RDIMM 1x64GB, 0.50 ns between them. That is the figure that reconciles the two spec sheets: a CAS number counts cycles, and cycles mean nothing apart from the rate they are counted at. Kingston DDR4-2666 ECC RDIMM 1x64GB runs 2666 MT/s at CL19; Samsung DDR4-3200 ECC RDIMM 1x64GB runs 3200 MT/s at CL22.
Transfer rate
Samsung DDR4-3200 ECC RDIMM 1x64GB carries the higher rating, 3200 MT/s to 2666 MT/s for Kingston DDR4-2666 ECC RDIMM 1x64GB — 25600 MB/s per module against 21328 MB/s. That is peak transfer rate, not access time: a higher clock is reached by counting more cycles for each access, which is why the CAS numbers differ too and why the true latency above is the directly comparable figure.
Kit layout
Kingston DDR4-2666 ECC RDIMM 1x64GB ships as 1 × 64GB and Samsung DDR4-3200 ECC RDIMM 1x64GB ships as 1 × 64GB — the same number of sticks on both sides, so they populate a board's slots the same way.
Lighting and ECC
On lighting: Kingston DDR4-2666 ECC RDIMM 1x64GB is published with no RGB lighting, and Samsung DDR4-3200 ECC RDIMM 1x64GB is published with no RGB lighting. On error correction: Kingston DDR4-2666 ECC RDIMM 1x64GB supports ECC, and Samsung DDR4-3200 ECC RDIMM 1x64GB supports ECC. ECC is a board and CPU feature as much as a module one, so it is worth having only where the platform can use it.
Which to buy
At least one of these kits has no tracked price right now, so this page has no buying answer to give: which is worth more depends on what each costs, and that is exactly what is missing. On specifications alone, Samsung DDR4-3200 ECC RDIMM 1x64GB has the lower true latency at 13.75 ns.
Common questions about this pair
- Is Kingston DDR4-2666 ECC RDIMM 1x64GB faster than Samsung DDR4-3200 ECC RDIMM 1x64GB?
- Yes, on true latency: 13.75 ns for Samsung DDR4-3200 ECC RDIMM 1x64GB against 14.25 ns for Kingston DDR4-2666 ECC RDIMM 1x64GB. Kingston DDR4-2666 ECC RDIMM 1x64GB runs 2666 MT/s at CL19 and Samsung DDR4-3200 ECC RDIMM 1x64GB runs 3200 MT/s at CL22, and the CAS numbers alone will not settle it — they count clock cycles, not time.
- Which of these two should I buy?
- At least one of these kits has no tracked price right now, so this page has no buying answer to give: which is worth more depends on what each costs, and that is exactly what is missing. On specifications alone, Samsung DDR4-3200 ECC RDIMM 1x64GB has the lower true latency at 13.75 ns.