alt Hacker NewsNot for small amounts of data.
Bandwith increases, but if you only need a few bytes DDR3 is faster.
Also slower speed means less heat and longer life.
You can feel the speed advantage by just moving the mouse on a DDR3 PC...
Replies
mrob • yesterday at 9:22 PM
RAM latency doesn't affect mouse response in any perceptible way. The fastest gaming mice I know of run at 8000Hz, so that's 125000ns between samples, much bigger than any CAS latency. And most mice run substantially slower.
Maybe your old PC used lower-latency GUI software, e.g. uncomposited Xorg instead of Wayland.
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While it has nothing to do with how responsive your mouse feels, as that is measured in milliseconds while CAS latency is measured in nanoseconds, there has indeed been a small regression with DDR5 memory compared to the 3 previous generations. The best DDR2-4 configurations could fetch 1 word in about 6-7 ns while the best DDR5 configurations take about 9-10 ns.
https://en.wikipedia.org/wiki/CAS_latency#Memory_timing_exam...