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Crucial CT2K64G56C46U5 DDR5-5600 128GB (2x64GB)
Crucial CT64G56C46U5 DDR5-5600 64GB (1x64GB)

Crucial CT2K64G56C46U5 DDR5-5600 128GB (2x64GB) Crucial CT64G56C46U5 DDR5-5600 64GB (1x64GB)

Common Features

  • ✓ The memory speed (Tested Speed) is 5600 MHz for both products.
  • ✓ Both products have a DDR memory version of 5.
  • ✓ The CAS Latency (CL) is 46 for both products.
  • ✓ Both products have a tRAS timing of 45.
  • ✓ Both products have a tRCD timing of 46.
  • ✓ Both products have a tRP timing of 45.
  • ✓ Both products have a form factor of 288-pin DIMM.
  • ✓ Neither product has Samsung B-Die.
  • ✓ Both products have a voltage of 1.1V.
  • ✓ Both products have a height of 31.15 mm.
  • ✓ Both products have a memory size of 64GB per module.
  • ✓ Both products do not support ECC memory.
  • ✓ Neither product has an integrated heatsink.
  • ✓ Neither product has RGB lighting.
  • ✓ Both products support Intel XMP 3.0.
  • ✓ Both products support AMD EXPO.

Main Differences

  • • The memory size (total) is 128GB (2 x 64GB) on Crucial CT2K64G56C46U5 DDR5-5600 128GB (2x64GB) and 64GB (1 x 64GB) on Crucial CT64G56C46U5 DDR5-5600 64GB (1x64GB).
  • • The Intel XMP / AMD EXPO support includes both Intel XMP 3.0 and AMD EXPO on Crucial CT2K64G56C46U5 DDR5-5600 128GB (2x64GB) but only Intel XMP 3.0 on Crucial CT64G56C46U5 DDR5-5600 64GB (1x64GB).
Specs Comparison
Crucial CT2K64G56C46U5 DDR5-5600 128GB (2x64GB)

Crucial CT2K64G56C46U5 DDR5-5600 128GB (2x64GB)

Crucial CT64G56C46U5 DDR5-5600 64GB (1x64GB)

Crucial CT64G56C46U5 DDR5-5600 64GB (1x64GB)

Performance:
true latency 16.43 ns 16.43 ns
memory speed (Tested Speed) 5600 5600
memory speed (SPD) 4800 MHz 4800 MHz
DDR memory version 5 5
CAS Latency (CL) 46 46
tRAS timing 45 45
tRCD timing 46 46
tRP timing 45 45

The Crucial CT2K64G56C46U5 DDR5-5600 128GB (2x64GB) and Crucial CT64G56C46U5 DDR5-5600 64GB (1x64GB) are similar in many performance aspects, but there are key differences worth noting. Both products have the same tested memory speed of 5600 MHz and SPD memory speed of 4800 MHz. They also share identical CAS Latency (CL) of 46, tRAS timing of 45, tRCD timing of 46, and tRP timing of 45. Furthermore, both modules have a true latency of 16.43 ns, which means there’s no difference in overall timing performance between these two kits.

Where they differ is in the capacity and configuration. The Crucial CT2K64G56C46U5 features a 128GB total capacity (2x64GB), while the Crucial CT64G56C46U5 comes in a single 64GB module. Both products use DDR5 memory version 5, so there is no variation in the memory version itself.

In summary, the performance specs for both products are identical in terms of latency, memory speed, and timings. The main difference lies in the total memory capacity and configuration, with one offering a larger 128GB kit and the other a single 64GB module.

General info:
form factor 288-pin DIMM 288-pin DIMM
memory size (total) 2 x 64GB 1 x 64GB
has Samsung B-Die ✕ ✕
voltage 1.1V 1.1V
height 31.15 mm 31.15 mm
release date February 2025 February 2025
memory size 64GB 64GB

The Crucial CT2K64G56C46U5 DDR5-5600 128GB (2x64GB) and the Crucial CT64G56C46U5 DDR5-5600 64GB (1x64GB) are quite similar in their general specifications, with both products using a 288-pin DIMM form factor. The height of both modules is also identical at 31.15 mm, making them the same in terms of physical dimensions.

In terms of memory size, the Crucial CT2K64G56C46U5 comes as a 128GB kit (2 x 64GB), while the Crucial CT64G56C46U5 has a single 64GB module. Both products have the same voltage rating of 1.1V and neither uses Samsung B-Die memory, as indicated by the specification provided.

Overall, while the two products share several key features, including form factor, voltage, and height, the main difference lies in the configuration and total memory size, with one offering a larger 128GB kit and the other a 64GB single module.

Features:
Intel XMP / AMD EXPO Intel XMP 3.0, AMD EXPO Intel XMP 3.0
Supports ECC memory ✕ ✕
Has an integrated heatsink ✕ ✕
has RGB lighting ✕ ✕

The Crucial CT2K64G56C46U5 DDR5-5600 128GB (2x64GB) and the Crucial CT64G56C46U5 DDR5-5600 64GB (1x64GB) both offer Intel XMP 3.0 support, ensuring compatibility with overclocking profiles for Intel platforms. The CT2K64G56C46U5 also supports AMD EXPO, a feature specifically aimed at enhancing memory performance on AMD systems. This gives it a slight edge for users with AMD setups. In contrast, the CT64G56C46U5 only supports Intel XMP 3.0, without the additional AMD EXPO compatibility.

Both products do not support ECC memory, meaning they are not designed for error-correcting functionality typically found in workstation-class memory. Additionally, neither product includes an integrated heatsink or RGB lighting, keeping the focus on performance without extra visual enhancements.

In summary, the primary distinction in features is the support for AMD EXPO in the 128GB kit, which is absent in the 64GB single module. Both products are otherwise quite similar in terms of cooling, error correction, and lighting features.

Comparison Summary

This is a specification comparison between Crucial CT2K64G56C46U5 DDR5-5600 128GB (2x64GB) and Crucial CT64G56C46U5 DDR5-5600 64GB (1x64GB). Both products share the same memory speed (Tested Speed) of 5600 MHz, CAS Latency (CL) of 46, and tRAS timing of 45. They also both lack Samsung B-Die, do not support ECC memory, and do not have an integrated heatsink. However, the Crucial CT2K64G56C46U5 DDR5-5600 128GB (2x64GB) features Intel XMP 3.0, AMD EXPO, while the Crucial CT64G56C46U5 DDR5-5600 64GB (1x64GB) only supports Intel XMP 3.0. Additionally, the memory size of the former is 128GB (2 x 64GB) compared to 64GB (1 x 64GB) in the latter.