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Should I push on to 4.0ghz - Page 2

post #11 of 41
Thread Starter 
Quote:
Originally Posted by returned4good View Post
1.75???? Surely you mean 1.475. If not, back down now! Otherwise, I've ran mine at 1.5v since March with no ill effects so far. Also, is there a vdroop present?
Sorry i did mean 1.475!!!! please explain what a vdroop is for me?
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post #12 of 41
Vdroop is a droop in actual voltage while the cpu is under load. For example, I have a .075v vdroop. Therefore, if I set my CPU voltage to 1.5, it'll drop to 1.425 under load. LLC (load line calibration) is supposed to counteract this, but it can fail. When I enable it, it actual raises mine by .075v and can be dangerous because of that. Keep these things in mind as you calculate your voltage. To test it, run CPUID as you load test and watch for a voltage drop.

I run mine at 1.55v to achieve 1.475 v under load.
post #13 of 41
Also, the old restrictions with Cool n Quiet vs OC aren't that present anymore. If you want to run it to keep your 24/7 voltage down, you likely can. I have successfully.

However, if you are using a multiplier OC rather than FSB OC, it might not engage, even if you enable it in the BIOS and OS.
post #14 of 41
Got my sig rig to 4.01ghz stable with a 24hour Prime95 test, just by turning up the multiplier. Any advice on any fine tuning. I could try to go higher I suppose on the chip seeing how it is getting to be winter and my room usually freezes up lol. But I mean could I see a speed increase if I turned down my multiplier a bit and turned up my bus speed?
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post #15 of 41
Quote:
Originally Posted by l_Will_l View Post
Got my sig rig to 4.01ghz stable with a 24hour Prime95 test, just by turning up the multiplier. Any advice on any fine tuning. I could try to go higher I suppose on the chip seeing how it is getting to be winter and my room usually freezes up lol. But I mean could I see a speed increase if I turned down my multiplier a bit and turned up my bus speed?
It's different with every board/chip combo, but try different combinations and see what works best for you. Usually, you can get a higher CPU OC by lowering your ram speed, but you can make this up by pushing the NB-CPU clock.

My best results have been by FSB OCing.
post #16 of 41
Thread Starter 
Quote:
Originally Posted by returned4good View Post
Vdroop is a droop in actual voltage while the cpu is under load. For example, I have a .075v vdroop. Therefore, if I set my CPU voltage to 1.5, it'll drop to 1.425 under load. LLC (load line calibration) is supposed to counteract this, but it can fail. When I enable it, it actual raises mine by .075v and can be dangerous because of that. Keep these things in mind as you calculate your voltage. To test it, run CPUID as you load test and watch for a voltage drop.

I run mine at 1.55v to achieve 1.475 v under load.
Very useful information, thank you.
Upon launching a torture test the voltage drops to 1.36v and occasionaly spikes to 1.376.
I'm going to head back into the bios and enable LLC.
Back shortly.
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post #17 of 41
OK, but be careful with LLC. It can spike dangerously. I prefer overvolting with a droop, but if it works as it's supposed to, it could be your ticket.

BTW, what is the voltage set to in the BIOS? It'd be useful to compare that with the droop voltage.
post #18 of 41
I don't think there's anybody on this board that would tell you not to.
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post #19 of 41
Quote:
Originally Posted by returned4good View Post
It's different with every board/chip combo, but try different combinations and see what works best for you. Usually, you can get a higher CPU OC by lowering your ram speed, but you can make this up by pushing the NB-CPU clock.

My best results have been by FSB OCing.
This is my first build in years. Last pc I built was just a P4 with no overclock and a 9400GT, So I am still learning quite a bit. So should I turn down my ram? Try to tune it's timings? Would I see better results with faster ram or with my NB up?
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post #20 of 41
Thread Starter 
Quote:
Originally Posted by returned4good View Post
OK, but be careful with LLC. It can spike dangerously. I prefer overvolting with a droop, but if it works as it's supposed to, it could be your ticket.

BTW, what is the voltage set to in the BIOS? It'd be useful to compare that with the droop voltage.
Well I was unable to locate any LLC related settings in my bios, is it an option on all boards or just some?
Also my processor voltage is set to 1.4625 in the bios and droops to 1.36 under load.
I'm also overclocking with a multiplier, i have tried it with an fsb oc before with identical results.
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