Corsair WS DDR5 6400MT/s CL32 - 64GB (4x16GB)
Corsair WS DDR5 6400MT/s CL32 Variants
About Corsair WS DDR5 6400MT/s CL32
Corsair WS DDR5-6400 CL32 is the top of Corsair's workstation ECC RDIMM lineup, the highest speed and tightest timings available in their WS line. It runs at 6400MT/s with CL32-40-40-104 timings at 1.35V, offering both more bandwidth and lower latency than the 5600MT/s and 6000MT/s variants.
The Performance Tier
At CL32/6400MT/s, effective latency is about 10.0ns, meaningfully better than the CL40/5600MT/s kit (~14.3ns). Combined with the 14% bandwidth increase over 5600MT/s, this is a genuine performance uplift for latency-sensitive workstation workloads. CFD simulations, large compile jobs, and real-time 3D viewports will benefit from the tighter timings.
Platform Requirements
Validated on Intel W790 boards (ASUS Pro WS W790E-SAGE SE, ASRock W790 WS). Both Intel XMP 3.0 and AMD EXPO profiles are supported. Running at 6400MT/s requires a board and memory controller that can handle this speed with RDIMMs. Not all W790 boards guarantee stability at 6400MT/s under full DIMM population. Check your board's QVL before committing to this speed tier.
Available in 64GB (4x16GB) kits. 1.35V operating voltage. PGS heat spreader, iCUE compatible. Limited lifetime warranty.
Best for: High-end Threadripper PRO and Xeon W workstation builds where memory performance directly impacts productivity: rendering, simulation, and large-scale compilation. The CL32 timings make this the best-performing ECC RDIMM option in Corsair's lineup.
Avoid if: Your workload isn't memory-bandwidth-sensitive. The 5600MT/s CL40 kit costs significantly less and covers most workstation use cases adequately.
Market Offers
| Merchant | Condition | Availability | Last Checked | Offer |
|---|---|---|---|---|
| Corsair | New | Out of Stock | 54m ago | — |
Prices are not shown for listings out of stock more than 7 days.
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