OC help i7 920 @ 4GHz

hehe, i dunno, maybe i got a very hot chip.
anyhow, i received the dual fan top and i installed it on the fnwx which has the i7.
I have also dropped vcore a couple of notches to test stability. I discovered that higher pll volts works well for stability instead of increasing vcore. I was stable for 9 hours p95 using vcore lower than 1.2750. I can't remember what i have set it to now but i am closer to 1.25v vcore. It has been 40 mins into p95 now with the lower vcore and the dual fan top and my temps per core are 80c 78c 78c 74c.
I think i am about to wrap this up and be done with it. I am happy with these temps as long as it will remain stable at the lower vcore.

just adding a note:

i installed a pair of fractal 140mm fans at the top of the case. The dual fan top actually came with a couple of lian li 140mm fans. I am using now one of them mounted in the drive bays with some blu-tak and blowing directly at CPU and RAM. So in total i got enough fans in this system to start my own wind farm.
The second 140mm fan that came with the top also resides in the drive bays of my original pc-7fn, blowing fresh air directly on the q6600 and RAM.
 
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HOLY BAT**** BATMAN!
in the post above i said i am doing 80c after 40 mins of p95 and then i added that 140mm fan in the drive bays with blu-tak.
Guess what. My temps now... 75c
 
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:D

Ok so 2 hours into P95 now and max temp has been 78c and lowest temp has been 70c.
Current temps across cores are 77c 76c 75c 73c
Looks pretty much Ok to me. So it seems the Achilles heel of this case is air intake. I can't believe how a single fan sitting in the drive bays dropped temps further from 80c to 77c
Only downside to the fan sitting in the bays is that despite being mounted with blu-tak it is causing some rattling in the vented bay covers. Nothing a bit more blu-tak didn't fix :p
 
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i am quite satisfied with the progress.
interesting how higher vtt allows me to be p95 stable at lower vcore.
nice little discovery there. :D
still needs lots of tweaking for efficiency reasons if nothing else. 77c is satisfactory for p95 in my book.
 
Glad the new additions have helped the temps cloud, may want to get urself a cheap fan controller though so u don't have to have them all running full tilt when they don't need too.

And yup those temps are far far far better, you could get really anal, and try for lower, but in all honesty, those are very good temps, you would only beat them with a Noctua DH-14 or water cooling, so job well done cloud, nicely done.
 
bifday2k said:
Glad the new additions have helped the temps cloud, may want to get urself a cheap fan controller though so u don't have to have them all running full tilt when they don't need too.

And yup those temps are far far far better, you could get really anal, and try for lower, but in all honesty, those are very good temps, you would only beat them with a Noctua DH-14 or water cooling, so job well done cloud, nicely done.
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ah the beauty of silent fans :D
but yes you are correct. However, i will be using the motherboard's built-in Q-Fan system instead of a fan controller. That should do the job nicely. The two top fans are very very very quiet and they are connected directly to the PSU so I plan to leave them running at full speed always. The noisy fans are the 140mm front and 140mm bay but those are connected to the mobo and i have already tested them at half speed and they are dead silent.
 
nicnik said:
The new temps seem more normal to me now :D must be the dual gpu's causing all the excess heat with bad air flow.
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really bad air flow to be honest. you would think that a 140mm at the front should push enough air inside the case but it barely does anything.
that second 140mm intake fan at the drive bays was an idea sent by the cooling gods :D
so yea, we are all good i think with this system.
maybe i should now focus on pushing my Q6600 to new performance heights :p
 
Oh yeh forgot about Q-fan, silly me lol. Well atleast now you can enjoy your pc without worrying about temps, and thats the most important thing.
 
can prolly lower those temps better. will take a much longer time fine tuning your QPI PLL, Vcore, CPU VTT etc. unless ofc that's all done already. I wouldn't really worry unless you get allot of time on your hands. 75-78C on d0@4ghz is perfectly fine.
 
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