DDR5 buying math
CL30 vs CL36 looks big on the box. The real difference is 2 nanoseconds.
Photo: Ron Lach / Pexels
What CL really is
CL is how many clock ticks the RAM waits before answering. Ticks get faster with speed.
Photo: Andrey Matveev / Pexels
The one-line formula
True latency in nanoseconds. DDR5-6000 CL30: 2000 x 30 / 6000 = 10.0 ns.
Photo: Ron Lach / Pexels
CL30 vs CL36 at 6000
Same speed, different CL: the whole debate is about 2 nanoseconds of wait time.
Photo: Dg Satria / Pexels
The tie surprise
So is 6400 CL32. A higher CL on a faster kit can match a lower CL exactly.
Photo: Gustavo Fring / Pexels
What 2 ns buys in games
Only when CPU-bound, and benchmarks disagree. Smoother 1% lows are the steadier win.
Photo: Ron Lach / Pexels
Price check, Aug 11, 2026
G.Skill CL30 $599.99 vs CL36 $479.99. A Patriot CL30 kit: $429.99. Shop across brands.
Photo: Kindel Media / Pexels
The EXPO/XMP gotcha
Kits boot at JEDEC defaults until you enable EXPO or XMP in BIOS. Check yours today.
Photo: Ron Lach / Pexels
The X3D exception
On 7800X3D-class CPUs, the stacked cache blunts CL gains. Buy CL36 and save.
Photo: IT services EU / Pexels
The verdict
Compare your two kits in real nanoseconds - presets loaded, math done for you.
Photo: Ron Lach / Pexels