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Corsair Vengeance RGB DDR5-6400 C42 128GB (2x64GB) specifications and in-depth review

Corsair Vengeance RGB DDR5-6400 C42 128GB (2x64GB)

Manufacturer: Corsair

The Corsair Vengeance RGB DDR5-6400 is a high-capacity desktop memory kit designed for DDR5 platforms, offered in a 2x64GB configuration that brings the total to 128GB of installed RAM. It ships in the standard 288-pin DIMM form factor and features an integrated heatsink along with RGB lighting. The modules operate at 6400 MHz when running at their tested speed, while the SPD-rated base speed sits at 4800 MHz for broad out-of-the-box compatibility.

On the timing side, the kit runs with a CAS Latency of 42, tRCD and tRP both at 52, and tRAS at 104, translating to a true latency of approximately 13.12 ns at the tested frequency. The operating voltage is rated at 1.35V, and the modules support Intel XMP 3.0 for straightforward profile-based overclocking on compatible platforms. ECC is not supported, and the modules do not use Samsung B-Die. Each stick measures 45 mm in height, which may be a relevant consideration for builds with taller CPU coolers.

Pros
  • The 2x64GB configuration delivers a total of 128GB, which suits memory-intensive workloads that demand large capacity in a dual-channel setup
  • Intel XMP 3.0 support allows compatible motherboards to automatically apply the 6400 MHz frequency and associated timings without manual configuration
  • The integrated heatsink helps manage heat dissipation across the modules during operation
  • RGB lighting is built in, giving users a visual customization option within their build
  • The tested speed of 6400 MHz places these modules at the higher end of commonly available DDR5 frequencies
Cons
  • A CAS Latency of 42 is relatively high, and while the true latency of 13.12 ns is acceptable, tighter timings are available at lower DDR5 speeds
  • The 45 mm module height may create clearance issues in systems with large CPU air coolers
  • ECC is not supported, which rules these modules out for workloads or platforms that require error-correcting memory
  • Samsung B-Die is absent, which matters to users who specifically seek that memory type for manual overclocking purposes
  • Only Intel XMP 3.0 is listed for profile support, with no mention of AMD EXPO compatibility
Who is this for?

This kit is well-suited for users running memory-intensive workloads such as large-scale video editing, 3D rendering, or virtual machines, where the 128GB total capacity across two modules provides substantial headroom. The Intel XMP 3.0 support makes it a practical choice for enthusiast builders on compatible Intel platforms who want a straightforward path to 6400 MHz without manual tuning. The integrated heatsink and RGB lighting also make it appropriate for open-frame or windowed builds where thermal management and visual customization are both relevant considerations.

Who is this NOT for?

Users who require ECC memory support — such as those running workstation-grade applications or server environments where data integrity is critical — will find this kit unsuitable, as error correction is not supported. Those specifically targeting AMD EXPO-compatible platforms should note that no EXPO profile is listed, meaning the 6400 MHz speed may not be straightforwardly enabled on AMD systems. Additionally, builders working with large CPU air coolers that have limited DIMM slot clearance may run into fitment issues given the 45 mm module height.

Performance:

true latency 13.12 ns
memory speed (Tested Speed) 6400
memory speed (SPD) 4800 MHz
DDR memory version 5
CAS Latency (CL) 42
tRAS timing 104
tRCD timing 52
tRP timing 52

The Corsair Vengeance RGB DDR5-6400 operates on DDR5 and runs at a tested speed of 6400 MHz, with a factory SPD speed of 4800 MHz for baseline compatibility. The primary timings consist of a CAS Latency of 42, tRCD and tRP each at 52, and tRAS at 104, which together yield a true latency of 13.12 ns at the tested frequency.

General info:

form factor 288-pin DIMM
memory size (total) 2 x 64GB
has Samsung B-Die ✕
voltage 1.35V
height 45 mm
memory size 64GB

This kit uses the standard 288-pin DIMM form factor and comes as a dual-module set, with each stick carrying 64GB for a total capacity of 128GB. The modules run at 1.35V and stand 45 mm tall, which is worth noting for builds with clearance constraints around the CPU socket. Samsung B-Die is not used in these modules.

Features:

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

The modules include an integrated heatsink and feature RGB lighting, adding a visual element to the build. For overclocking profiles, the kit supports Intel XMP 3.0, allowing compatible platforms to load predefined frequency and timing settings automatically. ECC memory is not supported.

Benchmarks:

Final Verdict

The Corsair Vengeance RGB DDR5-6400 is a capacity-focused DDR5 kit that makes a clear case for users who prioritize 128GB of dual-channel memory at a tested speed of 6400 MHz on Intel XMP 3.0 platforms. Its combination of high total capacity, integrated heatsink, and RGB lighting positions it well for demanding, memory-intensive workloads in enthusiast builds where both function and aesthetics matter. That said, potential buyers should be mindful of the module height in cooler-constrained builds, the absence of ECC and AMD EXPO support, and the relatively high CAS Latency that comes with the territory at this frequency and capacity level. For users who need substantial RAM headroom on a compatible Intel platform and want a kit that requires minimal manual setup, the Corsair Vengeance RGB DDR5-6400 delivers a coherent and well-defined package.