High temps

Banny

Banny

Banny

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Have custom kit all installed, my overclock is up to 3.6ghz Q9300, vcore in bios 1.41250v (1.36v actual) and using high NB volts 1.7v.
other volts cpu pll 1.6v, SB 1.2v FSB termination 1.5v

Am idleing at around 44,44,42,42 with fans on full turn them to minimum it goes around 45,45,42,42.

My board is P5E, loop consist of PA120.3 dtek Fuzion (with nozzle) 18w DDC pump with plexitop, dual bay rez, 2*mosfet blocks and XSPC NB block, SB has solid copper heatsink.
This is all on 1/2" tubing.

I would have though it would be a little lower than that, even at stock clock its still high.
Pretty sure I have done everything right, thin layer on TIM on cpu (lapped aswell) everything is screwed down tight.

Something must be right as I can force more volts through it now and its stable have easy gained 30 mhz FSB
 
What are prime load temps?

Could very well be dodgy temp sensors, which is pretty common with the 45nm chips for some reason.
 
The X38 northbridge gets pretty hot, and running 1.7v through it can only make things worse, tho a PA120.3 should still be able to handle that.

Is the rad clean?
 
Yeah rads clean, I have even tried downclocking the whole lot with the lowest volts you can have and it still idles at 48,48,46,46
the water is clear so rad must be clean and the flow seems good.
 
As temps arn't dropping lower than that even on reduced volts i'm still going to go with b0rked temp sensors.

Idle on water you should only be 5-10C above ambient.
 
I took it off and reseated it, now its worse, so gotta have it off again in the morning, seeing as footie is on now.
Silly me went and put one of the mosfet jubilee clips in the way of the cpu block, so cant get it off properly. gonna have to take the board out and take mosfet block off from underneath to do it properly
 
64c under prime is fine, so i wouldn't really worry that much about idle temps. What program are you using to monitor the temps?. I find RealTemp the most accurate.
 
Right have re-seated it again, managed to get it down to 61-62c with fans on high.
Whats the max NB volts I can give as I want more out of it.
 
I wouldn't push the chipset volts any higher. The NB volts won't affect the life of the CPU, but the 45nm chips are rumoured to die on too high VTT and PLL volts.

Now it's still to be proved, but an awful lot of people - even hardened overclockers - are trying to keep VTT and PLL low. Tho I do realise that that can be difficult on the X38 chipset.

But, tbh, 480x7.5 is as far as your chip will go. Anything over 475mhz stable is great for these chips.
 
Yeah I am happy with it, it is hard work getting over 460 to be honest.
Hex recommended I changed the TJ Max setting to 85 as it must be reporting wrong temps as everything is right including the amount of paste I used (which I am pretty sure I did right in the first place).
So now I am at 57,57,56,56 this is the max it goes to then come down to 54,54,52,52 depending on tests using the test in prime that gives off most heat. It does seem to go up and down must be the way Prime does its tests.
On air its a no no as you dont want to give NB to much volts.
3.6ghz is a nice round number I have had it on all 3 prime test for over 2hrs each and no errors, so pretty stable really, could push for 8hrs but dont see the point really.
Yeah as you said, its hard to keep the volts down if you do, you dont get anywhere.

But I must add the most important thing of this project is that I can turn the fans down to the lowest setting and there is only four degrees difference in temps, so have a really good overclock and it is near on silent now (yate loons are not that loud anyway) that is the reason to spend good money on the best parts for a watercooling loop.
 
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I have my fans mounted inside my shroud does it make much difference if they are on the outside, I did them inside so the machine wasn't so long, but could change them to outside of shroud if there is a difference of a few degrees.
 
Got a strange problem now.
Bear in mind this system is 8hrs Prime stable as I tested it yesterday.
When I start it up in the morning I get blue screens, even opening a program, give the memory some more volts, its the same.
Heres the funny part, if I change to my other profile, boot up, then shutdown and go back to my overclocked profile its fine, no problems at all.
Anyone work that out then, running Vista x64
 
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