Corsair CMH64GX5M4B6600C32

The number that matters is true latency, not CL alone. Here it is 32 / (6600 / 2) x 1000 = 9.7ns. That is tighter than 83% of the desktop DDR5 kits we list.

This is for DDR5 desktops: AMD AM5 on 600 or 800 series chipsets, and Intel 600, 700 or 800 series boards with DDR5 slots. It physically will not go into a DDR4 board. On AM5, speeds above 6000 to 6400MT/s usually switch the memory controller to a 2:1 ratio, which adds latency. 6600MT/s suits Intel boards better. Profiles: XMP 3.0.

A 4-module kit fills four slots. Four DDR5 sticks put more load on the memory controller, so check your board's memory support list for this exact kit before buying. 64GB suits heavy multitasking, large projects, virtual machines and local AI models.

Corsair lists no module height. If you run a large tower cooler, check its RAM clearance first. Corsair does not say whose DRAM chips are inside, so manual tuning headroom is unknown.

It scores 9 out of 10 on our DDR5 Speed Score, which weighs transfer rate and true latency against every other DDR5 kit we list. Do not compare it with DDR4 scores.