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Corsair

Corsair CMK32GX4M2A2666C16 Vengeance LPX 32GB DDR4 2666 desktop RAM

SKU CH-K401-63WGN MPN CMK32GX4M2A2666C16

A 32 GB dual-channel DDR4 kit running at 2666 MHz with CL16 timings and an anodized aluminum heatspreader for cooler overclocking headroom

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2666 (PC4 21300)
  • CAS latencyCL16
  • Memory timings16-18-18-35
  • Rated voltage1.2 V
  • Buffer typeUnbuffered
  • 32 GB capacity in a 2 x 16 GB kit
  • DDR4 2666 speed rated at PC4 21300
  • CL16 latency with 16-18-18-35 timings
  • Pure aluminum heatspreader for faster heat dissipation
  • Intel XMP 2.0 profile enables automatic overclocking

32 GB DDR4 2666 kit for overclocking builds

This Corsair Vengeance LPX kit delivers 32 GB of DDR4 memory in two 16 GB modules rated at 2666 MT/s with CL16 timings. The low-profile anodized aluminum heatspreader and eight-layer PCB are designed to manage heat during high-performance overclocking on Intel 100, 200, 300, 400 Series and X299 platforms as well as AMD 300, 400 Series and X570 chipsets. Intel XMP 2.0 profiles enable automatic configuration at 1.20 V.

Straightforward 288-pin installation with XMP

Installation follows the standard 288-pin DIMM procedure: align the notch, press firmly until the retention clips lock, then enable the XMP 2.0 profile in the motherboard BIOS to apply the rated 16-18-18-35 timings. The most common issues arise when XMP is left disabled, causing the modules to run at a lower default speed, or when four modules are populated on boards that only validate two-module kits at the rated frequency.

DDR4 platform limits at 2666 MT/s

The DDR4 interface at 2666 MT/s (PC4-21300) provides higher bandwidth and lower power consumption than DDR3, but the maximum stable frequency depends on the memory controller of the specific CPU and the motherboard topology. Intel X99, 100, 200, 300, 400 Series and X299 platforms plus AMD 300, 400 Series and X570 chipsets are the validated targets; running beyond the rated 2666 MT/s requires manual tuning and may exceed the silicon headroom of these ICs.

How it compares

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

Price $190.99
Pricier than about 67% of the 3,647 comparable items (median $90.99).
Total capacity 32 GB (2 × 16 GB)
Higher than about 70% of the 3,251 comparable items (median 16 GB).
Price per GB $5.97 per GB
Cheaper than about 59% of the 3,251 comparable items (median $6.75 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameCORSAIR
Product lineVengeance LPX
Model nameCMK32GX4M2A2666C16
Total capacity32 GB (2 × 16 GB)
Product type288-Pin PC RAM
Product colorBlack
Performance
Rated speedDDR4 2666 (PC4 21300)
Memory
CAS latencyCL16
Memory timings16-18-18-35
ECC supportNo
Buffer typeUnbuffered
Memory profilesIntel XMP 2.0
Heat spreaderAnodized Aluminum
Power
Rated voltage1.2 V
Size & build
Shipping weight0.11 kg
Package size152 × 89 × 10 mm
Compatibility
Recommended forAMD 300 Series / AMD 400 Series / AMD X570 / High Performance or Gaming Memory / Intel 100 Series / Intel 200 Series / Intel 300 Series / Intel 400 Series / Intel X299

Questions about this item

How can I verify the kit is running at 2666 MT/s with CL16-18-18-35 timings after installation?

Enable the Intel XMP 2.0 profile in the BIOS; the modules will then operate at the rated 2666 speed and 16-18-18-35 timings at 1.20 V.

What exactly is included and do I need any extra parts to install the 32 GB kit?

The box contains two 16 GB 288-pin DIMMs with black anodized-aluminum heatspreaders; no additional components are required for a standard desktop build.

Which capacity and speed version should I choose for a system that supports DDR4 2666?

This CMK32GX4M2A2666C16 kit provides 32 GB (2 × 16 GB) at DDR4 2666 with CL16 latency, matching the platform’s native speed.

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