I know this has been answered with some other posts, but I am still slightly confused. I am trying to understand the realtionship between the speed of memory and the FSB speed of a processor. My question is this can an AMD XP cpu running at 266 FSB use memory running at 333 mhz to its full potential without overclocking the FSB, or do you have to use a P4 processor that can run at 400/533 FSB to fully utilize the power of memory over 266 mhz?
Well the mobo is at KT333 so it can handle the memory, but what I am wondering is since the processor is running at 266 mhz and the memory is running at 333 mhz is there a waste of processing power going on?
you have the older KT266A. fsb 266, mem 266. everything the same.
now with the newer KT333 the mem can run at 266 or asynchronously at 333. not much performance gain there though as the fsb is still only 266. the main benefits are from reduced ram latency due to its higher speed.
best performance obviously would be 333fsb and 333 mem. currently this can only be achieved through CPU overclocking... push the fsb up to 333.
this however is very hard with a locked CPU. in order for 333fsb to work the cpu has to be able to handle a 25% speed increase. unlikely with most high end XP cpu's, and requires extra core voltage and excellent cooling.
the other (better) alternative is to unlock the CPU, gain acces to the multipliers. so raise the FSB to 333, lower the multiplier correspondingly and run at normal cpu speeds but with a nicer faster fsb.
also, the motherboard itslef had to be able to do 333. many of the cheaper brands dont.
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