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Re: [MISC] Passivt kølet motherboard/CPU me d god FPU?



Jesper Krogh skrev:
Sådan noget afhænger også af hvordan programmet ser ud. Moderne CPU'er
er følsomme overfor ting som "mange branches", specielt P4-serien der
har en lang pipe-line der skal flushes hvis branch-prediction ikke
rammer korrekt. Ved nedsat clockfrekens vil den oftere rent faktisk have
resultatet inden der er brug for det og der vil ikke være nogen pipeline
der skal flushes. ... bare for at nævne en af de ting der kan spille
ind.

Nu ved jeg ikke specielt meget om moderne processor design, men hvis branch predictoren kører samme frekvens som resten af CPU'en, burde det hele vel skalere lineært? Eller hvad gik galt i den tankegang...? :-)


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