Samsung
Samsung DDR5-6400 ECC RDIMM Spec and Price in Canada
DDR51x64GBRDIMM16.25 ns true latency
Samsung's M321R8GA0EB2 is the 64GB DDR5-6400 registered module, running 2Rx4 ranks at CL52 and 1.1V per the listings that carry the part number. It is the same M321 family and single-module shape as the 5600 line, one speed grade higher for servers whose memory controllers support 6400 MT/s — the class the newest EPYC and Xeon platforms boot — and it doubles as the compatibility target aftermarket RDIMMs are built to mimic.
Tied 1st of 18 models in the Server RAM catalog on Speed — 3 models share this figure.
Current best price
Prices exclude GST/HST.
Captured periodically and may have changed.- 1x64GB
April 29, 202625 capturestoday · $4,138.49
Each point is one capture, not a list price. How we track prices
Specifications
- Capacity
- 1x64GB
- Memory type
- DDR5
- Speed
- 6400 MT/s
- CAS latency
- Form factor
- RDIMM
- Voltage
- 1.1 V
- Modules
- 1
- RGB
- No
- ECC support
- Yes
Capacities
| Configuration | Part number | Current best price |
|---|---|---|
| 1x64GB | M321R8GA0EB2 | $4,084.19 at Amazon.ca · captured 2026-09-02 |
Guides for this category
How much RAM you actually needHow to size memory from the pressure your machine is under now, why running short quietly costs speed, and when a matched pair beats one stick.RAM speed and latency, and when they matterWhat a kit's MT/s and CAS latency each measure, why true latency is the two together, and the machines where the numbers actually change anything.SO-DIMM vs DIMM: the memory a laptop takesWhy laptop memory is a different module from desktop memory, how DDR4 and DDR5 are keyed apart, and why some machines take no module at all.What is ECC memory, and when you need itWhat error-correcting memory actually catches, how registered and load-reduced modules differ from unbuffered ones, and why the platform decides.
Sources
Every spec above was pulled from one of these — a field a source didn't state was left off rather than estimated.