RAM Speed Calculator
Memory Bandwidth
Calculate theoretical memory bandwidth from clock speed and configuration
RAM Latency (ns)
Convert CAS latency to nanoseconds
Formula
Bandwidth = Transfer Rate x Bus Width x Channels | Latency (ns) = CL / (Clock/2) x 1000
Frequently Asked Questions
How is memory bandwidth calculated?
Memory bandwidth = Transfer Rate (MT/s) x Bus Width (bytes) x Channels. DDR4-3200 with dual-channel 64-bit = 3200 x 8 x 2 = 51.2 GB/s. Higher transfer rates and more channels increase bandwidth linearly.
Is lower CAS latency always better?
Not necessarily. True latency (in nanoseconds) depends on both CAS latency and clock speed: True Latency = CL / (Clock/2) x 1000. DDR4-3200 CL16 (10ns) is faster than DDR4-2400 CL12 (10ns) despite higher CL because the higher clock compensates. Always compare true latency in nanoseconds.
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