NEMIX DDR5-6400 ECC RDIMM 2x32GB vs Samsung DDR5-6400 ECC RDIMM 1x64GB

NEMIXDDR5-6400 ECC RDIMM 2x32GB64 GB · 6400 MT/s · 52 CL · 16.25 ns
SamsungDDR5-6400 ECC RDIMM 1x64GB64 GB · 6400 MT/s · 52 CL · 16.25 nsLeads on Current best price
In short

NEMIX DDR5-6400 ECC RDIMM 2x32GB and Samsung DDR5-6400 ECC RDIMM 1x64GB arrive at the same true latency, 16.25 ns apiece. The latency is level, and Samsung DDR5-6400 ECC RDIMM 1x64GB is the one tracked at the lower price, so cost is the only difference.

SpecificationNEMIXDDR5-6400 ECC RDIMM 2x32GBSamsungDDR5-6400 ECC RDIMM 1x64GB
Capacity (GB)6464
Speed (MT/s)64006400
5252
True latency (ns)16.2516.25
Current best price$5,158.49at Amazon.ca · captured 2026-09-12$4,084.19betterat Amazon.ca · captured 2026-09-02
Price per GB$80.60$63.82better

NEMIX DDR5-6400 ECC RDIMM 2x32GB vs Samsung DDR5-6400 ECC RDIMM 1x64GB in detail

True latency

Both kits land on 16.25 ns. The two spec sheets state the same clock and the same CAS grade — 6400 MT/s at CL52 either way — and true latency is those two figures reconciled, so it comes out the same for each.

Transfer rate

Both kits are rated 6400 MT/s — 51200 MB/s per module — and both are published at CL52. The true latency above is computed from exactly those two figures, so it lands in the same place for each.

Price and tracked history

NEMIX DDR5-6400 ECC RDIMM 2x32GB is tracked at $5,158.49 — $80.60 per gigabyte — and Samsung DDR5-6400 ECC RDIMM 1x64GB at $4,084.19, or $63.82. Both are 64GB kits, so the totals compare directly: Samsung DDR5-6400 ECC RDIMM 1x64GB is $1,074.30 less than NEMIX DDR5-6400 ECC RDIMM 2x32GB.

Kit layout

NEMIX DDR5-6400 ECC RDIMM 2x32GB ships as 2 × 32GB, Samsung DDR5-6400 ECC RDIMM 1x64GB ships as 1 × 64GB. That is a real difference and not a ranking: more sticks fill more channels on a board that has them, while fewer sticks leave slots free for a later addition. Which suits depends on the board and on whether more memory is planned.

Lighting and ECC

On the lighting question: NEMIX DDR5-6400 ECC RDIMM 2x32GB does not have RGB lighting, and Samsung DDR5-6400 ECC RDIMM 1x64GB does not have RGB lighting. On error correction: NEMIX DDR5-6400 ECC RDIMM 2x32GB is published with ECC support, and Samsung DDR5-6400 ECC RDIMM 1x64GB is published with ECC support. Whether ECC is worth having depends on the platform as much as the modules — the board and the CPU have to support it too.

Which to buy

At the prices tracked here Samsung DDR5-6400 ECC RDIMM 1x64GB undercuts NEMIX DDR5-6400 ECC RDIMM 2x32GB, and the two are level on true latency at 16.25 ns. What that separation buys is a lower price, not a quicker kit — nothing on this page says it will feel any different in use.

Common questions about this pair

Is NEMIX DDR5-6400 ECC RDIMM 2x32GB faster than Samsung DDR5-6400 ECC RDIMM 1x64GB?
Neither. Both come out at 16.25 ns of true latency: NEMIX DDR5-6400 ECC RDIMM 2x32GB runs 6400 MT/s at CL52 and Samsung DDR5-6400 ECC RDIMM 1x64GB runs 6400 MT/s at CL52, and the two reconcile to one figure.
Which one costs less?
Samsung DDR5-6400 ECC RDIMM 1x64GB, at $4,084.19 against $5,158.49 — $1,074.30 apart at the same 64GB.
Which of these two should I buy?
At the prices tracked here Samsung DDR5-6400 ECC RDIMM 1x64GB undercuts NEMIX DDR5-6400 ECC RDIMM 2x32GB, and the two are level on true latency at 16.25 ns. What that separation buys is a lower price, not a quicker kit — nothing on this page says it will feel any different in use.
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