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AMD FX (Bulldozer) Owners Club! - Page 256

post #2551 of 8112
I tried to increase the voltage on my 8120 to 1.6125v and it said there was an overvolt error and to press F1 to change settings. I know that I can disable the overvolt feature but will this do anything besides allow me to increase the voltage over 1.6v. I can set the voltage to 1.6v but not higher. I think the overvolt feature may allow the voltage to fluctuate more than what I am comfortable with. Does anyone know anything about this that can help me out.

Thanks.
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post #2552 of 8112
It seems like a "Disabling this feature will possibly push components beyond known safe parameters for 99% of people, proceed at your own risk." safeguard.

Make sure you put lots of cooling on your VRM's and CPU. The FX-4100 got crazy hot at 1.6v, I can only assume that the FX-81xx chips would be even more out of control thermally. My recommendation would be watercooling at the MINIMUM.
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post #2553 of 8112
Hey quick question, I seem to keep reading the even when people up the NB/CPU, it doesnt seem to add much in the way of performance like it used to with the phenoms... I remember I OC'd my 960T's NB to 3000mhz and that thing got way faster than at stock (maybe placebo?) but I am not sure if its the same for BD. Is just upping the cpu speed the most beneficial?
post #2554 of 8112
Upping the NB helps but just not much once you get over 2400-2500mhz it takes a lot more voltage for very small gains.
Also upping the HT a little bit helps as well but once you go over 2800mhz you see no gains and in some cases performance loss.
post #2555 of 8112
Finally.. Cleared the BIOS a couple of times. Tried different timings and whatnot. A little cussing and very close to tears in between.. tongue.gif And hey, presto: http://valid.canardpc.com/show_oc.php?id=2178929 The BIOS is not very good on this mobo..
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post #2556 of 8112
Quote:
Originally Posted by bmgjet View Post

Upping the NB helps but just not much once you get over 2400-2500mhz it takes a lot more voltage for very small gains.
Also upping the HT a little bit helps as well but once you go over 2800mhz you see no gains and in some cases performance loss.

It seems that everytime I try to OC the NB/CPU when I boot into windows, the scheme is like windows basic... is there a reason for this?
post #2557 of 8112
Quote:
Originally Posted by kzone75 View Post

Finally.. Cleared the BIOS a couple of times. Tried different timings and whatnot. A little cussing and very close to tears in between.. tongue.gif And hey, presto: http://valid.canardpc.com/show_oc.php?id=2178929 The BIOS is not very good on this mobo..

Congrats! It seems to be so much easier with the fx-4100, I got it to 4.5 stable with just the multi and a little voltage... the 8120 sounds a little bit more difficult
post #2558 of 8112
Quote:
Originally Posted by RedSunRises View Post

It seems that everytime I try to OC the NB/CPU when I boot into windows, the scheme is like windows basic... is there a reason for this?

Getting micro errors from not enough voltage or too much heat.
post #2559 of 8112
Ok what is the max voltage for NB/CPU? I had it at 1.3v for 2400mhz and i would get that error...
post #2560 of 8112
Windows 7 boots up to Basic UI every other boot for me.

Though I have been crashing out due to GFX instability lately, as I have a new card and Im fiddling with it to find a stable setting. kind of off topic, but I find the HD 6850 much harder to OC AND stabilize than my unlocked GTX 465 (470).

Max for CPU-NB (theoretically) should be the same as the chip, though temps go up a bit with it much over 1.3v.
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