Micron
Micron DDR5-6400 ECC RDIMM Spec and Price in the United States
DDR51x64GBRDIMM16.25 ns true latency
Micron's registered line at the top of the standard JEDEC ladder runs the 64GB module at 6400 MT/s and CL52 with 2Rx4 ranks, per the documented listings — the manufacturer-branded option for the newest EPYC and Xeon platforms that support 6400 MT/s.
Tied 1st of 18 models in the Server RAM catalog on Speed — 3 models share this figure.
Current best price
$2,719.99Price too old to confirm
Prices exclude sales tax.
Captured periodically and may have changed.- 1x64GB
June 4, 202630 capturestoday · $3,342.68
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 | MTC40F2046S1RC64BD2 | $2,719.99 Price too old to confirm |
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.