Kingston DDR4-2666 ECC RDIMM 1x64GB 2933 CL21 vs Samsung DDR4-3200 ECC RDIMM 1x64GB
No value winner: every one of the 2 kits compared is out of stock, so none of their price-per-GB figures is a price you can actually pay today. On specs, the Samsung DDR4-3200 ECC RDIMM 1x64GB clocks highest at 3,200 MT/s.
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Kingston DDR4-2666 ECC RDIMM 1x64GB 2933 CL21 vs Samsung DDR4-3200 ECC RDIMM 1x64GB: full breakdown
Value: price per gigabyte
There is no price-per-GB winner in this comparison: every kit is out of stock, and an out-of-stock price is not a value. On the last prices recorded, the figures were Samsung DDR4-3200 ECC RDIMM 1x64GB at $15.609/GB. No usable price is on file for Kingston DDR4-2666 ECC RDIMM 1x64GB 2933 CL21, so it cannot be ranked on price per GB at all.
Capacity and module layout
The Kingston DDR4-2666 ECC RDIMM 1x64GB 2933 CL21 is 1x64GB and the Samsung DDR4-3200 ECC RDIMM 1x64GB is 1x64GB. Every kit here totals 64GB, so capacity is not the deciding factor. Every kit here is a single module. That is maximum upgrade headroom β the other slots stay free β but a lone stick runs single-channel until a matching module joins it.
Speed and latency
Clocks and timings: the Kingston DDR4-2666 ECC RDIMM 1x64GB 2933 CL21 at 2,933 MT/s CL21 and the Samsung DDR4-3200 ECC RDIMM 1x64GB at 3,200 MT/s CL22. The Samsung DDR4-3200 ECC RDIMM 1x64GB clocks highest at 3,200 MT/s, 9% above the Kingston DDR4-2666 ECC RDIMM 1x64GB 2933 CL21 at 2,933 MT/s. True latency, where lower is better, favours the Samsung DDR4-3200 ECC RDIMM 1x64GB at 13.8 ns against 14.3 ns on the Kingston DDR4-2666 ECC RDIMM 1x64GB 2933 CL21. That is the figure that settles a higher-CAS-at-higher-clock argument; MT/s or CAS on its own does not.
Current price against MSRP
Kingston DDR4-2666 ECC RDIMM 1x64GB 2933 CL21 and Samsung DDR4-3200 ECC RDIMM 1x64GB are out of stock, so those prices are the last recorded rather than something you can pay today. No MSRP is on file for any of these kits, so street price is the only reference point.
Which of these 2 kits should you buy?
No recommendation today: every one of the 2 kits compared is out of stock, and a price-per-GB figure nobody can pay is not a value. On paper the Samsung DDR4-3200 ECC RDIMM 1x64GB is the quickest at 3,200 MT/s, so it is the one to watch for. Wait for stock before committing β the price-per-GB order can change the moment one of them is listed again.
Technical Specifications Comparison
Capacity & Modules
| Specification | Kingston DDR4-2666 ECC RDIMM 1x64GB 2933 CL21 | Samsung DDR4-3200 ECC RDIMM 1x64GB |
|---|---|---|
| Total capacity | 64GBβ | 64GB |
| Module layout | 1Γ64GB | 1Γ64GB |
| Module count | 1 | 1 |
| Form factor | RDIMM | RDIMM |
| Category | server | server |
Speed & Latency
| Specification | Kingston DDR4-2666 ECC RDIMM 1x64GB 2933 CL21 | Samsung DDR4-3200 ECC RDIMM 1x64GB |
|---|---|---|
| Memory type | DDR4 | DDR4 |
| Speed | 2,933 MT/s | 3,200 MT/sβ |
| CAS latency | CL21β | CL22 |
| True latency | 14.3 ns | 13.8 nsβ |
Features
| Specification | Kingston DDR4-2666 ECC RDIMM 1x64GB 2933 CL21 | Samsung DDR4-3200 ECC RDIMM 1x64GB |
|---|---|---|
| ECC support | Yes | Yes |
| RGB lighting | No | No |
Pricing & Value
| Specification | Kingston DDR4-2666 ECC RDIMM 1x64GB 2933 CL21 | Samsung DDR4-3200 ECC RDIMM 1x64GB |
|---|---|---|
| MSRP | β | β |
| Best price | Out of stock | Out of stock |
| Price per GB | β | $15.609β |