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Crucial

Crucial DDR5-6400 CUDIMM Spec and Price in France

DDR52x16GBCUDIMM16.25 ns true latency

This kit shares its DDR5-6400 speed rating with the Crucial Pro DDR5-6400 kit but uses CUDIMM instead, a clocked unbuffered DIMM architecture that adds an onboard clock driver to the module, a genuine design difference from the UDIMM modules used across the rest of this catalog rather than a naming variation. That architecture shift comes with a tradeoff: CAS 52 timings and 1.1V, both looser and lower-voltage than the Pro UDIMM kit's CL32 at 1.35V. It suits newer platforms that support CUDIMM rather than general DDR5 upgrades.

Tied 19th of 139 models in the RAM catalog on Speed — 19 models share this figure.

Current best price

No tracked price — this page compares specifications alone.

Specifications

Capacity
2x16GB
True latency
16.25 ns
Memory type
DDR5
Speed
6400 MT/s
CAS latency
Form factor
CUDIMM
Voltage
1.1 V
Timings
52-52-52-103
Modules
2
RGB
No

Capacities

ConfigurationPart number
2x16GBCT2K16G64C52CU5
1x32GBCT32G64C52CU5

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.

What owners and reviewers say

Summarised from 1 source(s), reviewed September 14, 2026. A source is counted only where it names this model exactly. How we track prices

Commonly praised

  • Reviewers found the kit runs at DDR5-6400 with JEDEC timings automatically on Arrow Lake, needing no XMP or BIOS configuration.
  • Its bare, low-profile modules clear most CPU coolers and operate at a low 1.1V.
  • It was stable and uncomplicated throughout testing, presented as a dependable plug-and-play choice for Intel's Core Ultra 200S platform.

Commonly criticised

  • Its JEDEC C52 timings are looser than the faster DDR5-6400 kits it is measured against, which limits its raw performance.
  • It carried a notable price premium over rivals with tighter timings, and supply was limited when the review was published.

Sources behind this summary

Sources

Every spec above was pulled from one of these — a field a source didn't state was left off rather than estimated.