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Anyone haveing a problems new p67 B3 chip - Page 3

post #21 of 27
Pretty much the same voltage on my B3 vs the B2 (UD5).

But I have to set the voltage differently, becaus the B2 on my UD5 had completely broken LLC (LLC1 overshoot about 0.05v from BIOS to full load, and you don't even want to know what LLC2 did.

But my max voltage I needed for stability with that first cpu didn't change.

But I'm a new, lower volt chip than before.

There's something I noticed.
Someone said that with their B3.
They said that a load voltage that was stable when using LLC (when measured from a DMM), was UNSTABLE, when that same voltage was reached with LLC disabled. Example: 1.5v BIOS LLC disabled=1.405v LOAD (max vdrop)= unstable. 1.4v BIOS, LLC enabled= 1.405v load= stable.

And this was measured with a DMM.
Now that's something I can't figure out for sure...
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post #22 of 27
1.456V for Prime95 stable @ 4.8GHz on my 2500K and P8P67-M PRO B3 rev.

Way more than voltage it should take IMO.
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post #23 of 27
Quote:
Originally Posted by blah238 View Post
1.456V for Prime95 stable @ 4.8GHz on my 2500K and P8P67-M PRO B3 rev.

Way more than voltage it should take IMO.
Your SB is on fire! Mine does 4.7GHz 1.360-1.378 with offset and is Prime95 (blend) stable. I would never feed more than 1.4 volts.
post #24 of 27
Lol, I actually had to go up to 1.48V to get it stable for the last few Prime95 sequences (1280K+). Ridiculous.

Though I don't think it's unsafe. Idle temps are still around 32C, load temps in games 50-60C, load temps in prime 70-75C. Liquid cooling ftw!
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post #25 of 27
1.48v is way too high for SB imo. These things are 32nm remember. Not 65nm C2D's that could take 1.5v.

I'm running at 1.28v for only 300Mhz less than you.
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post #26 of 27
update to a newer bios... gave me better clocks... voltages seem more stable.

btw i had 1.45v at 5ghz stable until i upped my memory clock
Edited by badatgames18 - 4/2/11 at 11:16am
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post #27 of 27
Quote:
Originally Posted by Cyph3r View Post
1.48v is way too high for SB imo. These things are 32nm remember. Not 65nm C2D's that could take 1.5v.

I'm running at 1.28v for only 300Mhz less than you.
I agree it is more than most people's but still not dangerous if the temps are fine. See http://www.overclock.net/intel-cpus/...-i5-2500k.html for some comparisons.

Quote:
Originally Posted by badatgames18 View Post
update to a newer bios... gave me better clocks... voltages seem more stable.

btw i had 1.45v at 5ghz stable until i upped my memory clock
I'm on the latest BIOS posted by ASUS for this board, 0708. I have to wonder if it's up to the same code base as the mainstream ATX boards. OC'ing on this one is a PITA because you have to use offsets, ATV, and PLL/LLC are on/off with no intermediate settings. My old B2 board took much less voltage to achieve stability so I am 99% sure replacing the board would allow me lower voltages. But ASUS probably wouldn't auth an RMA for that and I don't feel like buying another board until Z68 at the earliest.
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