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Manufacturer: Corsair Last updated: 2026-09-14
Corsair CMK5X32G2B56Z40A2 32GB Review
At DDR5-5600, the Corsair CMK5X32G2B56Z40A2 is a 32GB desktop memory module rated CL40, for a true latency of 14.3ns.
CL40 at 5600MT/s is a looser timing than Corsair's 6000MT/s single sticks, so true latency comes in at 14.3ns, usable, but a real step behind CMK5X32G2B60C40A2's 13.3ns at the same capacity.
Performance
14.3ns true latency is the weakest of Corsair's 32GB single-module Vengeance lineup in this catalog. The 6000MT/s versions (CMK5X32G2B60C40A2, CMK5X32G2B60Z40A2) beat it while still landing at the AM5 fabric sweet spot.
Compatibility and Buying Advice
5600MT/s is safely within spec for any DDR5 motherboard.
Our verdict
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Filling a single 32GB DDR5 slot on a budget
- Matching an existing 5600MT/s single-module system
Not for
- New builds where the 6000MT/s single stick is available for similar money
Specifications
What these specs meanHow fast this kit is among DDR5 kits, rated from its speed and latency.
Identity
| Peak Bandwidth | 44.8 GB/s |
|---|---|
| Brand | Corsair |
| Part Number | CMK5X32G2B56Z40A2 |
Memory
| DDR Generation | DDR5 |
|---|---|
| Capacity | 32 GB |
| Speed | 5600 MT/s |
| CAS Latency | 40 |
| Module Count | 1 |
Physical
| RGB Lighting | No |
|---|
Module and platform
| RAM Segment | Desktop DDR5 |
|---|---|
| Form Factor | Desktop DIMM |
| Platform Optimisation | AM5 |
Capacity
| Capacity Per Module | 32 GB |
|---|
Speed and timings
| True Latency | 14.3 ns |
|---|
Overclocking profile
| XMP Support | No |
|---|---|
| EXPO Support | Yes |
Silicon
| Memory IC | Undisclosed |
|---|
Physical and lighting
| Colour | Black |
|---|
FAQs
What are the key specifications of the Corsair CMK5X32G2B56Z40A2 32GB?
Key specs for the Corsair CMK5X32G2B56Z40A2 32GB: Capacity Per Module 32 GB, Capacity 32 GB, Speed 5600 MT/s, OC Profile EXPO, DDR Generation DDR5, Part Number CMK5X32G2B56Z40A2.
Will the Corsair CMK5X32G2B56Z40A2 32GB work with my current setup?
The Corsair CMK5X32G2B56Z40A2 32GB lists DDR Generation is DDR5. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits. Our upgrade checker at /upgrade can confirm compatibility for common combinations.
Who is the Corsair CMK5X32G2B56Z40A2 32GB best suited to?
Best suited to: Filling a single 32GB DDR5 slot on a budget; Matching an existing 5600MT/s single-module system.
What are the drawbacks of the Corsair CMK5X32G2B56Z40A2 32GB?
Not the best fit for: New builds where the 6000MT/s single stick is available for similar money.
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