What should my CPU Cache Multiplier be in the BIOS ?

[dazkyl]

Current CPU is the i5 4670k oced at 4.4 ghz and right now i set the cache multiplier at 42.

Everything is stable.

Should it really be 1:1 ratio to the cache multiplier ? And does it effect performance if lowering it ?

Thanks.

 

[clueless77]

Running benchmarks in multiple programs after setting it higher does slightly increase performance, but can also negatively impact the stability of your cpu clock if it's being undervolted or has an inherent wall to how high the multiplier can be set. Mine seems to be 4.5 without excessive and over 1.30 voltages.

Try to close the gap as much as possible, it's not completely necessary to have 1:1 but if it is indeed possible, why not?

 

[dazkyl]

Running benchmarks in multiple programs after setting it higher does slightly increase performance, but can also negatively impact the stability of your cpu clock if it's being undervolted or has an inherent wall to how high the multiplier can be set. Mine seems to be 4.5 without excessive and over 1.30 voltages.

Try to close the gap as much as possible, it's not completely necessary to have 1:1 but if it is indeed possible, why not?

Currently my cpu speed is at 4,4 with 1.250 and a cache multiplier of 4,1 with about 1,250 as well. With 4,4 cache ratio and 4,4 cpu multiplier , i fail to pass stretching test so i'll need to find a voltage for a 4,4 cache multiplier. Any idea on cache voltage starting points for 4,4 cache ?

Thanks. You understood my question exactly !

 

[clueless77]

Well, from what I've read, your cache voltage shouldn't exceed your cpu voltage (or 1.30 cache at that) and can usually be at least slightly less than your cpu voltage, say a .025 difference or so. You might want to try increasing the voltage a little for both at 4.4 and 1:1 and see if you can't get it stable, but 42 is actually pretty good in the first place. Try OCCT for at least 5 mins as a quick stability test.