Originally Posted by imran27
Higher RAM speeds help a lot if you're after compression/encryption/trans-coding etc., these are memory intensive tasks. And an overclocked FX-8xxx is the best processor to go for since you do not need to pay much to get that level of performance. Even gaming is butter smooth on these processors.
I've done a lot of testing (besides this one) to compare and contrast running high and low memory speeds. The above test is done with the CPU at 5ghz (250mhz BCLK results in incorrectly reported 4ghz cpu clock speed). The CPU-NB in all tests was at 2500mhz.
I'ts not really shown there, but in my experience, exceeding the ~1600-1866MT/s speed range has almost no useful impact on performance. As you can see once I get to 2000MT/s the scaling in 1 test comes to a halt. The other 2 are not effected by memory speed/bandwidth. Different RAM kits will have different sweet spots depending on how hard they are being run. For me I get about the same performance in most workloads running 1600-7-8-8 as I do running 2000-10-12-12 or 2133-11-12-12 or 2333-12-14-14. Going to 1866 speeds can actually make it worse, as that's where I am forced to transition to 2T command rate. YMMV.Edited by mdocod - 4/5/14 at 12:27am