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Crucial CT2K32G56C46U5 DDR5-5600 64GB (2x32GB) specifications and in-depth review

Crucial CT2K32G56C46U5 DDR5-5600 64GB (2x32GB)

Manufacturer: Crucial

The Crucial CT2K32G56C46U5 DDR5-5600 is a 64GB dual-channel memory kit consisting of two 32GB modules designed for desktop systems. It operates using the DDR5 standard and fits standard 288-pin DIMM slots, making it compatible with current-generation motherboards that support this form factor. The kit runs without a heatsink or RGB lighting, keeping its profile straightforward and functional.

Rated at a tested speed of 5600 MHz with a CAS latency of 46, the kit has a calculated true latency of 16.43 ns. The remaining primary timings are tRCD 46, tRAS 45, and tRP 45. The SPD base speed is 4800 MHz, while higher speeds are accessible through both Intel XMP 3.0 and AMD EXPO profiles. The module operates at 1.1V, stands 31.15 mm tall, and does not support ECC or use Samsung B-Die ICs.

Pros
  • Supports both Intel XMP 3.0 and AMD EXPO profiles, enabling automatic frequency configuration on a wide range of compatible motherboards
  • Total capacity of 64GB across two modules suits workloads that benefit from large memory pools
  • Runs at a tested speed of 5600 MHz, above the base SPD speed of 4800 MHz
  • Operates at 1.1V, which is the standard low-voltage specification for DDR5
  • Dual-module kit allows the system to run in dual-channel mode natively
Cons
  • CAS latency of 46 is relatively high, resulting in a true latency of 16.43 ns that reflects the trade-off of running at elevated DDR5 speeds
  • Does not use Samsung B-Die ICs, which some enthusiasts prefer for overclocking headroom
  • No integrated heatsink, which may be a consideration in thermally constrained environments
  • Does not support ECC, limiting its suitability for applications that require error-correcting memory
Who is this for?

This kit is well-matched for users building or upgrading a system that needs a large 64GB memory pool, such as those running demanding content creation applications, virtual machines, or data-heavy workloads. The native support for both Intel XMP 3.0 and AMD EXPO makes it a practical choice for users who want straightforward speed configuration without manual tuning. Its compact, heatsink-free profile also suits builds with tight clearance around DIMM slots or cases with limited airflow overhead.

Who is this NOT for?

Users who prioritize tight, low-latency memory tuning may find the CL46 timings less appealing, as the resulting true latency of 16.43 ns is not well-suited to latency-sensitive tasks where tighter timings matter. The absence of ECC support makes this kit inappropriate for workstation or server environments where memory error correction is a requirement. Additionally, users specifically seeking Samsung B-Die modules for aggressive manual overclocking will need to look elsewhere, as this kit does not use that IC.

Performance:

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

This DDR5 kit operates at a tested speed of 5600 MHz, with a native SPD speed of 4800 MHz for out-of-the-box compatibility. The primary timings are CL46-46-45-45, covering CAS latency, tRCD, tRAS, and tRP respectively, which combine with the 5600 MHz frequency to produce a calculated true latency of 16.43 ns.

General info:

form factor 288-pin DIMM
memory size (total) 2 x 32GB
has Samsung B-Die ✕
voltage 1.1V
height 31.15 mm
memory size 32GB

The kit consists of two 32GB modules in a 288-pin DIMM form factor, bringing the total installed capacity to 64GB. Each module stands 31.15 mm tall and operates at 1.1V. The ICs used are not Samsung B-Die, and the modules do not carry any heatspreader implied by their compact height profile.

Features:

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

The kit supports both Intel XMP 3.0 and AMD EXPO profiles, allowing compatible motherboards to load predefined frequency and timing settings automatically. It does not support ECC memory, and neither an integrated heatsink nor RGB lighting is included, giving the modules a plain, low-profile appearance.

Benchmarks:

Final Verdict

The Crucial CT2K32G56C46U5 DDR5-5600 is a straightforward 64GB DDR5 kit that delivers on its core promise: a high-capacity, dual-channel configuration with broad platform compatibility through Intel XMP 3.0 and AMD EXPO support. It suits users who need substantial memory capacity and want reliable out-of-the-box speed configuration without the complexity of manual tuning. Those with a preference for tighter sub-timings or ECC functionality will find it outside its comfort zone, but for workloads where raw capacity and ease of setup take priority, this kit presents a well-defined and purposeful option.