OC'ing relationship between CPU & Memory

WaltzWorker · Jun 21, 2015

Hello,

I was wondering if there's a direct or indirect relationship between Memory speed and CPU speed when overclocking? For example: Would it be better to have the "base" memory speed at some multiple of CPU speed?

HEXiT · Jun 21, 2015

as with everything electronic tuning and syncing will bring efficiency gains.
matching your ram speed to the native speed of mmu on the cpu is a good idea.
you get the best balance of i/o rates to bandwidth performance.
thats more important to me using an old i7. as if i go over the native mmu speed (1066/1333), the ram controller switches to 1 stick per channel. which means i would be limited to 3 sticks of ram with no ability to upgrade the other 3 unused slots.

because of this, i run my system at 3.33ghz so my ram multi can sit on 10 so i get 1333 exactly.
i could of course run the cpu faster, but i would have to drop the ram down to the next multi, and that means it would only run at 1064. if i wanted to use the other 3 sticks of ram.
so yeah for me i found there is a correlation/relationship.

also if you look at cpus speed before its multid you will see its often based 133 your ram will also have a base clock of 133.

k1114 · Jun 21, 2015

The bclk is the only thing that is related but ocing is done by the multi these days so you can have speeds independent of each other. There is no benefit from having it at some multiple of each other.

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OC'ing relationship between CPU & Memory

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