Q6600 Advice

Trunks9486 · 2 May 2008 at 19:03

I am currently running my Q6600 at 3.6GHz (400 x 9) at 1.424v (CPU z during 2x orthos). So far it seems that its going to be stable here.

My previous stable clock was 425 x 8 at 3.4GHz.

How much harder is it for a system to be stable at 450 x 8 for 3.6Ghz given that its stable at 3.6GHz with the higher multi? My max temp on the two high cores is 70 and 65 at the other two.

Trunks9486 · 2 May 2008 at 21:07

yeah, i have underclocked my RAM to 1:1 settings and now runs at 800MHz 4-4-4-12.

Temps seem to have fallen now that i have the window open as well, max is 67 for the two high cores and 61 for the other two.

Is the voltage reasonable for 24/7 use? Its 1.475 in BIOS and 1.424 in CPU z.

ORTHOS still goes strong though

Trunks9486 · 3 May 2008 at 16:03

PhoenixUK said:
If you have good memory I would give it a go and try running it at 438-440x8 which will make run go at about 880mhz BUT try to run it on 4-4-4-12 timings, my memory can do that without probs so urs should as well.

Your volts are ok but the temps are already a bit high.

How were your temps at that 425x8 with ram 1:1?

My temps are really dependent on the room temperature though... I live on campus right now and the room can get pretty warm. As soon as i open the window temps drop by around 5 degrees to a maximum of 65 for the high cores.

The CPU is stable, i have also run blend to test for overall system stability and its working fine so i am pretty happy

I was thinking of trying to run at 450 x 8. As that gives me the same CPU clock which is stable now. What are reasonable volts to put through the FSB? I cant see the stock values on my Gigabyte mobo though, only how much to add is available. Any clues?

Temps were slightly lower when i was running at 425 x 8 for 3.4GHz and 1700FSB.

Trunks9486 · 3 May 2008 at 23:50

Yes, i have used small ffts for the CPU first to check the CPU stability and then used blend to verify that the system as a whole is stable as it tests some of the RAM as well. I also threw in some gaqming to actually use the thing under normal conditions. Not to mention that i was watching a movie while ORTHOS was working with minimal interference. Was kinda impressed by that ^_^

I will check my MCH and FSB voltages and try to up the voltages as you said and maybe try the 450 x 8. 1800 FSB sounds tasty.

Trunks9486 · 4 May 2008 at 00:18

psychas said:
i thought ortos stresses only 2 cores ?

Yeap, you can run two instances of ORTHOS and assign each one two two cores. Works wonders.

Trunks9486 · 4 May 2008 at 16:03

I managed to run the system for six hours straight on ORTHOS at 450 x 8 so i am pretty sure that my CPU is now stable at that clock as is the FSB at 1800. RAM is running at 1:1 ratio for 900 MHz at 4-4-4-12.

Voltages for reference are
VCore 1.475 (BIOS), 1.44 (CPUz idle) and 1.42(CPUz Load)
FSB + 0.15v as the above poster had suggested.
MCH +0.075v
VDIMM +0.4v (rated voltage).

Should i try to run the RAM at 1080MHz 5-5-5-15? Or would using a divider put additional stress on the MCH? I was also unable to find the stock voltages on my motherboard. It only says normal under most headings and only specifies stock value for VCORE.