Does overclocking the cores overclock the cache too?

[Anarchist420]

In other words: When turbo is on on an intel 3.3 GHz processor, does the cache then run at 3.7 GHz or does the cache stay at 3.3GHz?

 

[Wall Street]

It depends. I believe that Ivy Bridge and Sandy Bridge have one clock domain, so overclocking the core does overclock the cache. Some designs like Lynnfield and Haswell have separate core and uncore clock domains, so overclocking the core does not overclock the cache.

 

[pantsaregood]

As stated above, it depends on the CPU.

Also note that in all modern CPU designs (as in, since slot-based CPUs were dropped), L1/L2 cache run at the CPU's frequency. L3 cache runs independently on some CPUs. All of AMD's CPUs with L3 cache use a separate clock.

 

[RadiclDreamer]

Anything recent, yes. There may be exceptions but everything i know of does. Back in the day there were half speed cache units and overlocking them overclocked the cache as well, but in those cases it was 1/2 what the main clock speed was.

 

[Anarchist420]

Thanks🙂