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Corsair Dominator Platinum RGB CMT64GX5M2B5200C40 64GB (2x32GB) DDR5 5200MHz CL40 desktop memory kit, black, RGB
Corsair

Corsair CMT64GX5M2B5200C40 64GB

RAMView on corsair.com
Key Specs:
DDR5 / 64GB (2x32GB) / 5200MT/s / CL40

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Manufacturer: Corsair Last updated: 2026-09-14

Corsair CMT64GX5M2B5200C40 64GB (2x32GB) Review

The Corsair CMT64GX5M2B5200C40 is a 64GB (2x32GB) DDR5-5200 CL40 kit from Corsair's Dominator Platinum RGB line.

This one's for buyers who want 64GB of capacity for heavy multitasking, VMs, or content work more than they want raw speed — 5200MT/s CL40 is on the slow side for DDR5 (15.4ns true latency), so if your workload actually leans on memory bandwidth, Corsair's CMT64GX5M2B6000C40 at the same capacity but 6000MT/s is worth the small premium.

Performance

At 5200MT/s CL40, true latency lands at 15.4ns, well below the 10-11ns range of a well-tuned 6000MT/s kit. The 64GB total capacity is the real selling point here, not clock speed.

Compatibility

5200MT/s runs comfortably on both AM5 and Intel platforms without hitting any fabric-ratio penalties, making it an easy plug-and-play choice even on older or budget boards that can't guarantee a stable 6000MT/s+.

Comparison to Alternatives

Corsair's own CMT64GX5M2B6000C40 offers the same 64GB (2x32GB) capacity and Dominator Platinum RGB styling at 6000MT/s instead of 5200MT/s for meaningfully lower latency — worth checking before buying this specific SKU.

Specifications

Identity

BrandCorsair
Part NumberCMT64GX5M2B5200C40

Memory

DDR GenerationDDR5
Capacity64 GB
Speed5200 MT/s
CAS Latency40
Module Count2

Physical

Form FactorDesktop DIMM
RGB LightingYes

Module and platform

RAM SegmentDesktop DDR5

Capacity

Capacity Per Module32 GB

Speed and timings

True Latency15.4 ns

Silicon

Memory ICUndisclosed

Physical and lighting

ColourBlack
Platform Sweet SpotAM5
Spec Score4.9

Expert Review

Reviewed by Burooj Alam. Rated by us, not by users.

Best for

  • Heavy multitaskers and content creators needing 64GB total
  • Budget-conscious high-capacity builds where peak speed isn't critical
  • Older boards that can't reliably run 6000MT/s+ DDR5

Not for

  • Gaming-first builds where memory speed affects frame times
  • Buyers who could stretch to the 6000MT/s version of this same kit

FAQs

What are the key specifications of the Corsair CMT64GX5M2B5200C40 64GB (2x32GB)?

The Corsair CMT64GX5M2B5200C40 64GB (2x32GB) is a memory kit from Corsair. Key specs: DDR Generation DDR5, Capacity 64GB (2x32GB), Speed 5200MT/s, CAS Latency 40, Module Count 2.

Will the Corsair CMT64GX5M2B5200C40 64GB (2x32GB) work with my current setup?

The Corsair CMT64GX5M2B5200C40 64GB (2x32GB) 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 CMT64GX5M2B5200C40 64GB (2x32GB) best suited to?

It suits heavy multitaskers and content creators needing 64gb total, budget-conscious high-capacity builds where peak speed isn't critical, older boards that can't reliably run 6000mt/s+ ddr5.

What are the drawbacks of the Corsair CMT64GX5M2B5200C40 64GB (2x32GB)?

It is a poor fit for gaming-first builds where memory speed affects frame times, buyers who could stretch to the 6000mt/s version of this same kit.

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