RAM Bandwidth Calculator
Calculate theoretical memory bandwidth from MT/s, bus width and channel count.
This is the theoretical maximum from your inputs; real performance depends on the platform and workload.
What this tool does
The calculator estimates theoretical memory bandwidth from the data rate and number of channels. It is useful for comparing single- and dual-channel configurations, but measured performance also depends on the memory controller, timings, workload and platform.
How to use it
Enter the values requested by the calculator and check the result together with the notes shown below it.
Practical example
Use a realistic example from your own setup to compare scenarios. The result is a reference, not a replacement for manufacturer specifications.
How to interpret the result
Treat the result as an estimate whenever real-world factors are not available to the browser. For hardware, network or safety decisions, verify the relevant technical specifications.
Frequently asked questions
How is RAM bandwidth calculated?
By multiplying the speed in MT/s by the bytes each channel transfers (bus ÷ 8) and by the number of channels.
What is the difference between MT/s and MHz?
MT/s means transfers per second. DDR memory makes two per clock cycle, so DDR5-6000 runs on a 3000 MHz clock.