Corsair

Corsair CMP48GX5M2X8000C38 48GB

Summary:: 48GB (2x24GB) DDR5-8000 CL38 Dominator Titanium RGB kit

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Manufacturer: Corsair Last updated: 2026-09-14

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Corsair CMP48GX5M2X8000C38 48GB Review

The Corsair CMP48GX5M2X8000C38 is a 48GB (2x24GB) DDR5-8000 CL38 kit from Corsair's Dominator Titanium RGB line.

8000MT/s is firmly Intel territory and needs a top-tier motherboard and IMC to hit reliably, but the payoff is real: 9.5ns true latency combined with class-leading bandwidth for memory-heavy workloads on a high-end Z790/Z890 build.

Performance

9.5ns true latency at 8000MT/s CL38 is excellent, and the extreme bandwidth at this speed benefits memory-bound applications and content creation workloads especially well.

Compatibility

8000MT/s requires a top-tier Intel Z790/Z890 board with a proven memory controller; this is not a speed to expect out-of-box stability on budget boards.

Comparison to Alternatives

Corsair's own CMP48GX5M2B6000C30 offers the same 48GB (2x24GB) capacity at a far more universally compatible 6000MT/s CL30, the safer pick unless you specifically have a board proven to run 8000MT/s.

Our verdict

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

Best for

High-end Intel Z790/Z890 builds chasing maximum DDR5 bandwidth
Enthusiasts and overclockers with proven 8000MT/s-capable boards

Not for

AMD Ryzen builds
Budget or mid-range boards without confirmed 8000MT/s support

Specifications

What these specs mean

Speed Score

9.5/10

How fast this kit is among DDR5 kits, rated from its speed and latency.

Identity

Peak Bandwidth	128.0 GB/s
Brand	Corsair
Part Number	CMP48GX5M2X8000C38

Memory

DDR Generation	DDR5
Capacity	48 GB
Speed	8000 MT/s
CAS Latency	38
Module Count	2

Physical

RGB Lighting	Yes

Module and platform

RAM Segment	Desktop DDR5
Form Factor	Desktop DIMM
Platform Optimisation	Intel

Capacity

Capacity Per Module	24 GB

Speed and timings

True Latency	9.5 ns

Overclocking profile

XMP Support	Yes
XMP Version	XMP 3.0
EXPO Support	No

Silicon

Memory IC	Undisclosed

FAQs

What are the key specifications of the Corsair CMP48GX5M2X8000C38 48GB (2x24GB)?

Key specs for the Corsair CMP48GX5M2X8000C38 48GB: Capacity Per Module 24 GB, Capacity 48 GB, Speed 8000 MT/s, OC Profile XMP 3.0, DDR Generation DDR5, Part Number CMP48GX5M2X8000C38.

Will the Corsair CMP48GX5M2X8000C38 48GB (2x24GB) work with my current setup?

The Corsair CMP48GX5M2X8000C38 48GB (2x24GB) 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 CMP48GX5M2X8000C38 48GB (2x24GB) best suited to?

Best suited to: High-end Intel Z790/Z890 builds chasing maximum DDR5 bandwidth; Enthusiasts and overclockers with proven 8000MT/s-capable boards.

What are the drawbacks of the Corsair CMP48GX5M2X8000C38 48GB (2x24GB)?

Not the best fit for: AMD Ryzen builds; Budget or mid-range boards without confirmed 8000MT/s support.