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Is there any cpu-nb oc'ing for intel cpu's?

post #1 of 9
Thread Starter 
Well coming from an x4 965 soon to be a 2500k I always heard about oc'ing the cpu-nb for great performance increases. Never have i read about an intel user having to do such a thing. Does that exist with the new sandy bridge cpus?
post #2 of 9
from what i heard, all clocks (USB, PCIe, NB) are tied to the BCLK, and if you oc the BCLK beyond 5%, the system will quickly become unstable.

No old-school overclocking here, its all done on multiplier.
     
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post #3 of 9
Here is a good read me for you to get started with. As it breaks down and defines everything with a example.

http://www.techreaction.net/2011/01/...idge-v0-1beta/
post #4 of 9
Thread Starter 
Ok well i get that you don't use the fsb, (or block whatever you want to call it) in intel cpu's that much, but the cpu-nb was completely separate. Like for my x4 965 i could adjust the fsb and multiplier to obtain a cpu frequency i'd want, and THEN i would move on to OC my cpu-nb which was completely different which gave a speed boost to the ram and made the computer much more responsive. There's nothing like that for intel?
post #5 of 9
Don't touch the BLCK in my opinion it's not worth it. I took it to 102 and my SSD broke immediately after. It could've been a coincidence, but the BLCK controls a ton of different things in the computer.

Also, when I took my BLCK to 102, my keyboard started having issues as well. The system in BIOS would boot saying "no keyboard detected", or something like that.
    
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post #6 of 9
wow holy crap, that sounds so restrictive... just 100 to 102 and there's problems already.
     
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post #7 of 9
Quote:
Originally Posted by KILLER_K View Post
Here is a good read me for you to get started with. As it breaks down and defines everything with a example.

http://www.techreaction.net/2011/01/...idge-v0-1beta/
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post #8 of 9
Mine has the same problems, keyboard stops working in BIOS at even 101 BCLK.

The IMC on the Sandy Bridge chips appears to overclock with the CPU frequency. There's really no way to tell for sure, as there is no "NB" speed on them. But overclocking my 2500k from stock to 4.5GHz (its a 4.9GHz stable chip), I see huge increases in memory bandwidth. And that's where the increase is at with the Phenom NB clocks, memory bandwidth.
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Junkyard
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HTPC01
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Crucial MX100 256GB WD Green 2TB DVDRW Corsair H50 Push / Pull 
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post #9 of 9
Thread Starter 
Ah i see now, that seems more efficient, gotta love SB.
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