RAM Latency Calculator

Your details

The speed stamped on your RAM kit, e.g. DDR4-3200 or DDR5-6000. Enter the number after the dash (MT/s = mega-transfers per second, same as MHz for historical DDR4 labelling).
MT/s
Column Address Strobe latency: the number of clock cycles between a READ command and the first bit of data returned. Found on the kit label as CL or the first number in a timing string like 16-18-18-38.
cycles
Adds tRCD, tRP, and tRAS inputs so you can convert each timing to nanoseconds.
True CAS latencyGood latency
10ns

Absolute access delay in nanoseconds - the number to compare across kits

Clock cycle time0.625ns
Clock frequency1,600MHz
Peak bandwidth25.6GB/s
10 ns
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True latency: 10.00 ns

  • Your RAM delivers a true CAS latency of 10.00 ns at 3200 MT/s with CL16.
  • This is solid latency that suits most gaming and productivity builds. You are unlikely to notice a difference versus a faster kit in everyday use.
  • Peak theoretical bandwidth is 25.6 GB/s per channel. Dual-channel doubles this to 51.2 GB/s.

Next stepA latency under 10 ns is already very competitive. Focus bandwidth and capacity for your next upgrade rather than chasing tighter timings.

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