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anticitizenzero
02-09-06, 12:24 AM
I am a bit confused of the advantages of using different multipliers on AMD cpu's. I understand how the speed is calculated with them, but my question is say I wanna achieve a clock speed of 2.5ghz on a 2.2 ghz cpu, is there any diffence going with an 11x multiplier, 228X11, verses say a 10x multiplier, 250x10?

jAkUp
02-09-06, 12:26 AM
Well your FSB would be at different speeds, so your HTT and MEM would be different.

snowmanwithahat
02-09-06, 12:28 AM
Well your FSB would be at different speeds, so your HTT and MEM would be different.

which, would in turn give you a much higher memory bandwidth, granted that it's stable at those speeds, hopefully it is, because with a higher FSB and the same cpu speed, you'd have overall better performance, but i doubt it's too much better, just slightly

KoRnfR3ak
02-10-06, 04:02 AM
CPUs on D core revision support 1/2, 3/5, 2/3, 7/10, 3/4, 5/6, 9/10 and 1/1 memory dividers, supporting memory close to 100, 120, 133, 140, 150, 166, 180 and 200MHz. CPUs on E core support two additional dividers which are bigger than 1, 7/6 and 5/4, supporting something close to 233 and 250MHz.

But in terms of CPU stability, Lets consider an FX-55 (San Diego, E4 Core Revision,90nm,2600MHz,200MHz*13, HTT=200MHz*5, unllocked multipler upwards, 1.30V)

Trying to keep the RAM close @ stock 200MHz and the HTT close to 1000MHz, which overclock would be more "healthy" for the CPU ?

CPU Overclock 1: CPU@2800MHz (200MHz*14) .. HTT set to 5x (200MHz*5=1000MHz) ... memory divider 1/1 (200MHz*1/1=200Mhz)

CPU Overclock 2: CPU@2817MHz (245MHz*11,5) .. HTT set to 4x (245MHz*4=980MHz) ... memory divider 5/6 (245MHz*5/6=204Mhz) ..

And wich one would have better performance ?