RAM Speed & True Latency
Nanosecond Calculator
Calculate true first-word response times and dual-channel bandwidth to eliminate 1% low frame time stutters in esports titles.
Kit B has 0.56 ns faster latency and provides +20% more memory bandwidth.
Frequently Asked Questions
How do you calculate true RAM latency in nanoseconds?
True latency is calculated using the formula: Latency (ns) = (CAS Latency ร 2000) / Frequency (MT/s). For example, DDR5 6000 MT/s CL30 equals (30 ร 2000) / 6000 = 10.00 nanoseconds.
Why is high bandwidth DDR5 sometimes slower in latency than DDR4?
DDR4 3200 CL14 or 3600 CL16 has an absolute latency of 8.75ns to 8.89ns. Although DDR5-6000 CL30 has slightly higher nanosecond latency (10.0ns), DDR5 doubles memory bandwidth (from ~50 GB/s up to 96+ GB/s) and features on-die ECC with two 32-bit subchannels, delivering higher overall 1% low FPS in modern game engines.
What is the best RAM sweet spot for AMD Ryzen 7000/9000 and Intel 14th Gen?
For AMD Ryzen (Zen 4 and Zen 5), 6000 MT/s with CL30 timings is the universal sweet spot for 1:1 FCLK memory controller ratio. For Intel 14th Gen, DDR5-6400 to 7200 MT/s CL32 or CL34 offers peak frame times.