Technical Snapshot

The Corsair Vengeance RGB DDR5 48GB (2x24GB) 8400MT/s CUDIMM Intel XMP — CMHC48GX5M2X8400C40 is a high-performance DDR5 desktop memory kit with Intel XMP overclocking support. Running at 8,400 MT/s with CL40-52-52-135 timings at 1.4V, it supports Intel XMP profiles for one-click speed optimization in compatible BIOS. The kit provides 48GB (2x24GB) of DDR5 memory featuring a Aluminum heatspreader with RGB lighting. Backed by a Limited Lifetime warranty, targeting enthusiast PC builders, gamers, and content creators requiring high-bandwidth memory.

Use Case
Gaming, content creation, desktop computing
Compatibility
DDR5-compatible desktop motherboard
Category
DDR5 CUDIMM — Corsair Vengeance RGB
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Corsair RAM
Corsair Vengeance RGB

Vengeance RGB DDR5 48GB (2x24GB) 8400MT/s CUDIMM Intel XMP — CMHC48GX5M2X8400C40

DDR5 · CUDIMM · 8,400 MT/s · CL40-52-52-135 · 48GB (2x24GB)

Memory transfer rate in megatransfers per second. Higher MT/s provides more bandwidth for CPU-bound workloads.
Speed 8,400 MT/s
Total kit capacity across all modules. Dual-channel kits double memory bandwidth.
Capacity 48GB (2x24GB)
CAS latency and full timing chain. Lower CL means faster first-byte access time.
Timings CL40-52-52-135
Overclocking profile for one-click speed optimization in compatible BIOS. XMP for Intel, EXPO for AMD.
Profile Intel XMP
MPNCMHC48GX5M2X8400C40
EAN0840440494850
CategoryMemory
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Memory Specifications

Memory TypeDDR5
Form FactorCUDIMM
Total Capacity48GB (2x24GB)
Speed8,400 MT/s
TimingsCL40-52-52-135
Voltage1.4V
XMP/EXPO ProfileIntel XMP
HeatspreaderAluminum
RGB LightingYes
Module Height44.2 mm
CUDIMMYes
WarrantyLimited Lifetime

Full Specifications

Data sourced from Corsair product specifications
Memory
Product LineVengeance RGB
Memory TypeDDR5
Form FactorCUDIMM
Total Capacity48GB (2x24GB)
Module Count2
Module Capacity24GB
Speed8,400 MT/s
CUDIMMYes
Timings & Voltage
TimingsCL40-52-52-135
Voltage1.4V
XMP/EXPO ProfileIntel XMP
Design
HeatspreaderAluminum
ColorBlack
Module Height44.2 mm
RGB LightingYes
Product
BrandCorsair
MPNCMHC48GX5M2X8400C40
EAN0840440494850
WarrantyLimited Lifetime
Variantstandard
Physical
Weight0.150 kg (estimated)
Package Dimensions14.0 x 8.0 x 1.0 cm (estimated)

Support

Corsair Memory Compatibility ToolCheck motherboard compatibility for this module
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Corsair Vengeance RGB DDR5 48GB (2x24GB) 8400MT/s CUDIMM Intel XMP — CMHC48GX5M2X8400C40 DatasheetPDF · Technical specifications
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Frequently Asked Questions

What motherboards are compatible with this memory?

The Corsair Vengeance RGB DDR5 48GB (2x24GB) 8400MT/s CUDIMM Intel XMP — CMHC48GX5M2X8400C40 requires a DDR5-compatible motherboard. This kit uses Intel XMP profiles, optimized for Intel LGA 1851 (Z890, B860) and LGA 1700 (Z790, B760) platforms. It is also physically compatible with AMD AM5 DDR5 boards. Enable XMP in BIOS to run at rated speed.

Do I need to enable Intel XMP in BIOS?

Yes. Out of the box, DDR5 memory runs at JEDEC default speed (typically 4800 MT/s). To achieve the rated 8,400 MT/s with CL40-52-52-135 timings, enable Intel XMP in your motherboard BIOS. This is a one-click setting in the memory overclocking section.

Does this kit run in dual-channel mode?

Yes, the Corsair Vengeance RGB DDR5 48GB (2x24GB) 8400MT/s CUDIMM Intel XMP — CMHC48GX5M2X8400C40 includes 2 modules which enable dual-channel mode when installed in the correct DIMM slots (typically A2+B2 or slots 2+4). Dual-channel doubles memory bandwidth compared to single-channel configuration. Check your motherboard manual for optimal slot placement.

Does this memory have a heatspreader?

Yes, the Corsair Vengeance RGB DDR5 48GB (2x24GB) 8400MT/s CUDIMM Intel XMP — CMHC48GX5M2X8400C40 features a Aluminum heatspreader with RGB lighting. The module height is 44.2 mm. Check clearance with your CPU cooler — tall heatspreaders may interfere with large tower coolers.

What warranty does this memory come with?

The Corsair Vengeance RGB DDR5 48GB (2x24GB) 8400MT/s CUDIMM Intel XMP — CMHC48GX5M2X8400C40 comes with a Limited Lifetime warranty from Corsair.

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Product: Corsair Vengeance RGB DDR5 48GB (2x24GB) 8400MT/s CUDIMM Intel XMP — CMHC48GX5M2X8400C40
MPN: CMHC48GX5M2X8400C40
Schemas: Product + BreadcrumbList + FAQPage
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