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Micron

Micron DDR5-6400 ECC RDIMM Spec and Price in the United Kingdom

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
£4,112.99Price too old to confirm

Prices include VAT.

The last tracked price for Micron DDR5-6400 ECC RDIMM in the United Kingdom was £4,112.99 at Amazon.co.uk, captured 2026-09-25. Across one tracked merchant and 13 days of recorded prices, the 90-day median for Micron DDR5-6400 ECC RDIMM is £4,034.99 and the lowest recorded price is £3,517.99. This site began capturing prices on July 30, 2026; for Amazon listings, prices dated earlier come from Keepa's price history.

Captured periodically and may have changed.

Price history

30D90D180DAll
  • 1x64GB
August 27, 202613 data pointstoday · £4,112.99

Each point is one day's recorded price, not a list price. Points dated before July 30, 2026, when this site began capturing prices, come from Keepa's Amazon price history. 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

ConfigurationPart numberCurrent best price
1x64GBMTC40F2046S1RC64BD2

£4,112.99

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.