Corsair CMK16GX4M4A2666C15R Vengeance LPX 16GB (4x4GB) DDR4 2666 CL15 desktop RAM

Vengeance LPX 16GB quad-channel kit

This Corsair Vengeance LPX kit delivers 16GB of DDR4 memory across four 4GB modules rated at 2666 MT/s with CL15 timings. It targets enthusiasts building or upgrading Intel X99 platforms who want validated compatibility and XMP 2.0 simplicity. The low-profile anodized aluminum heatspreader fits tight cooler clearances while the red finish adds visual coordination. Each IC is individually screened to support high-performance overclocking headroom.

DDR4 2666 bandwidth and latency limits

At DDR4 2666 (PC4 21300) the theoretical peak transfer rate is fixed by the JEDEC data rate; real-world throughput will be lower due to protocol overhead and controller efficiency. CL15 timing of 15-17-17-35 at 1.20V sets the minimum latency window the memory controller must satisfy. Quad-channel operation on X99 requires all four slots populated; mixing kits or populating fewer slots reduces aggregate bandwidth. XMP 2.0 applies the rated profile automatically but cannot exceed the silicon’s validated limits.

Aluminum heatspreader and daily handling

The eight-layer PCB and pure aluminum spreader move heat away from the ICs during sustained loads, helping stability in compact builds. Low-profile height avoids interference with large air coolers or radiator fans mounted over the DIMM slots. Red anodization resists fingerprints and scratches better than bare metal during installation. Modules are tested across most X99 motherboards so builders can expect reliable POST without manual timing entry.