Overclocking Multiplier locked 1155 CPUs

So let me get this straight.

Core i5-2400 has 3.1GHz base clock, 3.4GHz max Turbo clock. Limited unlock gives you +0.4GHz in case of 1 core load, that is 3.8GHz. Then the reason i was confused is the fact that 2 and 3 core load has the same Turbo multiplier (+2) and only the 4 core load has the lowest +1 Turbo multiplier. That gives you :
1 core load : 3.1+0.3 (Turbo)+0.4GHz(+4 multiplier)=3.8GHz
2 core load : 3.1+0.2 (Turbo)+0.4GHz(+4 multiplier)=3.7GHz
3 core load : 3.1+0.2 (Turbo)+0.4GHz(+4 multiplier)=3.7GHz
4 core load : 3.1+0.1 (Turbo)+0.4GHz(+4 multiplier)=3.6GHz

Now it starts to make sense . The reason i didn't understand was that i thorugh you are able to set the same value for 4 core load as you have for 1 core load, but that is clearly not the case.

I hope it also helps noizdaemon666.

 

It helps

Basically if I get an i5 or i7, it will turbo (when using 4 cores) up by 1 multi and I can set another 4 multis above that. Correct?

 

well, you can set whatever value for all cores (eg. 38 on 2400) but it will only turbo to 36.

noiz, faugusztin got it 100% correct in my quoted post. it is +4 on all turbo values. when using 4 cores, you still go up 0.4GHz because before overclocking, it does not run at 3.7GHz (1 core does) 4 cores run at 3.2Ghz.

 

I think largely peoples perception of non-k cpu's is they are unclockable but with turbo and the multi trick along with running them at a bit higher base clock you can get most chips to run around 4ghz under most load situations.

 

AH yes, I get it now Cheers guys, very helpful as ever

Only problem now is affording an i5

 

you'd need at least a 2500 for that

my 2400 run at 3.6GHz to 3.8GHz. more than fast enough, but still feel disappointing when i look at most people with their 4.5GHz overclocks.

 

Don't be, i run my 2600K on stock (no time for quality OC with 99.9999% stability)

 

Ah your multi is two down 31 instead of 33 of the 2500.

Wouldnt worry still stupid fast.

 

im willing to overclock, let's swap