Q6600 G0 + P5K Premium -> 500FSB??

FSB is the botlleneck of the quads, higher FSB at same speed will give you higher performance. All can be done in the limits off the quad and mobo. With proper settings, it is usually the cpu that hits a wall. Some worse cases cant go higher than 420, very good quads can go 480+

Try some testing yourself: set a low multi, relax memory timings, etc. - make sure, that nothing else will be an obstacle for high fsb freqs. Now start at 450 and go up p up .... adjust voltages, check temps .... you get the point. Mostly, for 450 and up, you may require high voltages for fsb, mch or vtt, pll, find your comfort zone for the particular cpu for 24/7

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Originally Posted by sofarfrome

I am sure people think about shortening the life of the board, but this is XTREME SYSTEMS where people pump 1.9v into an $1100 CPU (QX9650) and burn it up for the sake of benching. was somehow tied to it. Can't complain though as I intend on stressing my components because it is FUN and almost an addiction.

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Same here mate, but Extremesystems has evolved into a more general hardwareforum , where we used to have madman like Sierra and co pushing their A8V Dlx to the max, we have all sorts of stuff and peeps now to be honest I'm getting tired of some posts as they complain ( just like on HARDOCP forum ) how crap their mobo is while mostly it's user error or just pushing it that little bit too far... I can live with the fact that I smoke a board but can they ?

So what is the default NB voltage?

How high would you crank it up for relatively safe 24/7 use at 8 MULTI *500 FSB with a Q6600?

For 4G with that FSB I would say 1.7-1.8v would be fine with good board cooling.

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Originally Posted by flesheatinvirus

For 4G with that FSB I would say 1.7-1.8v would be fine with good board cooling.

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Are you in a mood to destroy ya mobo in a flash, jeez guys 1.8 volts on the NB :shakes: 24/7 bump

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Originally Posted by foodfightr

So what is the default NB voltage?

How high would you crank it up for relatively safe 24/7 use at 8 MULTI *500 FSB with a Q6600?

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500FSB is not an easy goal ... When setting a 6x MULTI, what was your max stable FSB?

Fact is that over 1,7V Vmch is hurting the chipset and over 1,6V is not, repeat NOT good for 24/7. Certainly you wont see any defects after one month, but on the long run ... yes, your are killing the chipset

I have been running 1.7v on my NB of a DFI NF4 Ultra board with an Opty 170 at 3G now for two years with no problems.

Don't compare different technologies, chipsets,...,
I also used 3 volts for my ram in the DDR days, do it now and you get a nice show... compare apples with apples plz

I agree the Opty rig is completely different and not a fair comparison.Running 500+ FSB on this board continuous 24/7 is going to require a serious amount of NB vcore that comes with that decision. If you can do it on 1.55v all the power too you but I doubt that will happen unless you got a really good Prem, Test it and see. I run 4G at 445X9 because its less voltage all around with my NB at 1.55v and crank things up when benchin. The P5K prem was built for water and has a well designed heatpipe bridge which can handle excessive heat rather well. Is that voltage dangerous 24/7 and will it degrade the system faster yes of course it will. It can handle it. I do believe thats why we are here.