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Two black 288-pin DDR5 UDIMM modules in a pair

Crucial

Crucial CT2K32G48C40U5 64GB (2 x 32GB) DDR5 4800 desktop RAM

SKU CH-RGZX-1WK2N MPN CT2K32G48C40U5

Dual-channel 64GB kit delivers DDR5 4800 speeds with CL40 latency and 1.1V operation

  • Total capacity64 GB (2 × 32 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeUnbuffered
  • Memory profilesIntel XMP 3.0

Capacity 64GB (2 x 32GB)

Speed DDR5 4800 (PC5 38400)

CAS Latency CL40

  • 64 GB total capacity with two 32 GB modules for high-density desktop builds
  • DDR5 4800 speed delivers 1.5x the data rate of DDR4 for responsive performance
  • CL40 CAS latency at 1.10 V balances low power draw with quick access times
  • Intel XMP 3.0 profile enables one-click overclocking to rated frequency
  • 288-pin UDIMM form factor fits standard desktop DIMM slots for easy installation

64GB DDR5 4800 Kit

This dual-channel kit provides 64GB of desktop DDR5 memory across two 32GB modules. It targets users building or upgrading a system that needs higher bandwidth than DDR4 for multi-core workloads and gaming. The black UDIMM design fits standard 288-pin DIMM slots.

Best for new DDR5 platforms, not DDR4 boards

The modules suit Intel platforms that support XMP 3.0 profiles and run at 1.1V. Builders staying on DDR4 motherboards or systems requiring ECC should choose a different kit. The 4800 speed and CL40 latency match baseline DDR5 specifications.

Speed and profile: DDR5 4800 with XMP 3.0

The kit operates at 4800MT/s (PC5-38400) with a CAS latency of 40. Intel XMP 3.0 allows the rated speed and timings to be loaded automatically in the BIOS without manual adjustment.

How it compares

Measured against everything we stock in Desktop RAM, at today’s prices. Recalculated every night.

Price $804.99
Pricier than about 90% of the 3,647 comparable items (median $90.99).
Total capacity 64 GB (2 × 32 GB)
Higher than about 90% of the 3,251 comparable items (median 16 GB).
Price per GB $12.58 per GB
Pricier than about 78% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameCrucial
Model nameCT2K32G48C40U5
Total capacity64 GB (2 × 32 GB)
Product type288-Pin PC RAM
Product colorBlack
Performance
Rated speedDDR5 4800 (PC5 38400)
Memory
CAS latencyCL40
ECC supportNo
Buffer typeUnbuffered
Memory profilesIntel XMP 3.0
Power
Rated voltage1.1 V
Size & build
Shipping weight0.05 kg
Package size175 × 89 × 6 mm

Other versions of this model

5 more in the same range

Questions about this item

How much heat and power does the 1.10V DDR5 4800 kit draw when running all day?

At 1.10 volts the modules run cooler and use less power than DDR4, while on-module power management keeps thermals steady during extended sessions.

What motherboard slot and BIOS feature are needed for the 288-pin UDIMM kit to work?

A DDR5 desktop motherboard with 288-pin UDIMM slots and Intel XMP 3.0 support is required to run the 64GB kit at its rated 4800MT/s speed.

Will the CL40 DDR5 sticks run alongside older DDR4 modules I already own?

No — DDR5 and DDR4 use different keying and voltages, so the 288-pin DDR5 modules cannot be installed in the same system as DDR4 memory.

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