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***The Official Core i7 Overclocking Thread***

I bottled it and went for 3.2 overnight on 1.264 constant.

Woke up this morning.. machine still on and was happy.. till I turned my display on and it appeared my machine had restarted!

I can't find any error logs so I simply don't know why.

I can think of a few possibilities..

Overheating.. but my CPU was on a maximum of 68c after 1hr before I went to sleep..

Low volts.. but 1.264v should be enough for 3.2Ghz.

Plus my machien had managed 2 hours under full load on the same volts at 3.4Ghz and not failed.

I'm starting to get stressed..

Before I start ripping this machine to bits I'm gonna put this down to personal error.. perhaps the paste was to thick or not spread enough when I applied.. thus I am going to buy some AS5 and apply a small droplet in the centre of the CPU and spread out over the entire intergrated HSF with an old Debit card.

If that doesn't work then I think this board may be going on the members market.. as it isn't Chandler friendly.
 
Thank god.. been panicking all day so far and was gonna splash out on either a new mb or chip! Still confused by the default voltage of this chip as other ppl on this board have it locked at a lower voltage. I am still gonna get some as5 tho and apply it using the card method.

Really tho is 70c under full load ok or should I be worried?? It was on 70c on 2 cores for about an hour..
 
Chandler_90 said:
Before I start ripping this machine to bits I'm gonna put this down to personal error.. perhaps the paste was to thick or not spread enough when I applied.. thus I am going to buy some AS5 and apply a small droplet in the centre of the CPU and spread out over the entire intergrated HSF with an old Debit card.

If that doesn't work then I think this board may be going on the members market.. as it isn't Chandler friendly.
Click to expand...

Don't bother with the as5. The noctua themal paste is better and pretty much the same as the mx2.
 
Chandler_90 said:
Thank god.. been panicking all day so far and was gonna splash out on either a new mb or chip! Still confused by the default voltage of this chip as other ppl on this board have it locked at a lower voltage. I am still gonna get some as5 tho and apply it using the card method.

Really tho is 70c under full load ok or should I be worried?? It was on 70c on 2 cores for about an hour..
Click to expand...

Are you using 2 fans on the Noctua?

With 1.36v under load my cores hit 75-78c after a while of being loaded. The cores also seem to vary by 2-3 degrees and I've reapplied MX2 a couple of times. If your CPU is sat below 85c then your fine and shouldn't worry too much about it.

One thing I have found with the voltages is that you should start at about 1.2 and see how far you can get the bclk with out raising it and then bump the voltages by 1 step and try again etc.
 
Chandler_90 said:
In windows atm @ 3.4Ghz.. runing a Prime 95 blend// temps are 72, 69, 66, 68. Been running approx 2 hours.

I managed to get my head around the Vcore issue by simply only allowing an increase of 0.020v over the default.. thus giving me a constant maximum of 1.264v.

Max temps from this session are 74, 71, 68, 69.

Debating if I should leave this running overnight!
Seems funny that the first 2 cores have exceeded 70c bu the other 2 have not...
Click to expand...

Chandler,

Try this:

Turn off HT and leave Turbo on, turn off all other CPU stuff. Set the VTT to 1.335, enable loadline calibration, set the vcore to 1.325, set the BCLK to 195, set QPI link to x36, set PCI Express to 100, set your uncore to double the ram ratio plus one and let me know how you get on. The temps should go down with HT off and it is also normal to have a spread between cores. I have a 5 degrees difference between top and bottom cores. Let me know how you get on.

Cheers,

Blue
 
SABRE70 said:
After a few tweaks heres mine now :D




Click to expand...

That is an impressively low CPU voltage for 20 x 180!!! :eek:

bluesouljah said:
Chandler,

Try this:

Turn off HT and leave Turbo on, turn off all other CPU stuff. Set the VTT to 1.335, enable loadline calibration, set the vcore to 1.325, set the BCLK to 195, set QPI link to x36, set PCI Express to 100, set your uncore to double the ram ratio plus one and let me know how you get on. The temps should go down with HT off and it is also normal to have a spread between cores. I have a 5 degrees difference between top and bottom cores. Let me know how you get on.

Cheers,

Blue
Click to expand...

Fair enough turning HT off for testing, but I would not sacrifice HT for an extra 10-20 on the BCLK.
 
3.2Ghz Stable..

Ok last night I ran the same settings as I was running the night previous, a 10Hr blend test on a BCLK of 160 with 1.264v, and the max temps were 68, 65, 65, 63

I am happy with this :)

Screen -



Tonight I will push for 3.4Ghz.. if I don't get it I am fine tho as I think 2.6ghz to 3.2Ghz is a canny OC..

I just ordered a GTX295 too.. so I will be testing that out on Friday.. in that order is some Arctic MX compound so I will be reapplying paste too :)

Thanks for the help guys.. and Blue.. if 3.4Ghz is unstable I will try out your settings :)
 
I have a slight very slow leak from my res and I'm really fed up with water cooling, thinking about going back to air and using the Noctua cooler, good move or will I regret it? I see you guys are hitting 75 C with the Noctua, not sure I would be happy with that.
 
mr_x_plosion said:
I have a slight very slow leak from my res and I'm really fed up with water cooling, thinking about going back to air and using the Noctua cooler, good move or will I regret it? I see you guys are hitting 75 C with the Noctua, not sure I would be happy with that.
Click to expand...

Hi,

And there is me thinking of going in the opposite direction and going to water. I would assume water cooling is more of a pain but worth it.

Mark
 
Its a real pain in the butt, I'm too lazy to drain the system fix the leak and refill and bleed it again. At the moment I have a bit of tissue under it catching tiny droplets, this can't be good though, if it does drip it just passes my mid fans anyway so no components will get wet.
 
Chandler_90 said:
Ok last night I ran the same settings as I was running the night previous, a 10Hr blend test on a BCLK of 160 with 1.264v, and the max temps were 68, 65, 65, 63

I am happy with this :)

Screen -



Tonight I will push for 3.4Ghz.. if I don't get it I am fine tho as I think 2.6ghz to 3.2Ghz is a canny OC..

I just ordered a GTX295 too.. so I will be testing that out on Friday.. in that order is some Arctic MX compound so I will be reapplying paste too :)

Thanks for the help guys.. and Blue.. if 3.4Ghz is unstable I will try out your settings :)
Click to expand...

Dont know why your messing about with tiny increments and hours with Prime 95.

Just get LinX and run it after an overclock. If your unstable you will know about it within the first 10 minutes.

Most i7s start getting into problems around 3.7 ghz - 4.0ghz with vcore the most likely problem.
 
My leak has stopped, the bit of tissue I put in is dry today where yesterday there was 1 droplet of water, very strange.

With all my fans on low my idle temps are 33-37 C reaching 60 C under load although my room is cold at 18 C.
 
mr_x_plosion said:
My leak has stopped, the bit of tissue I put in is dry today where yesterday there was 1 droplet of water, very strange.

With all my fans on low my idle temps are 33-37 C reaching 60 C under load although my room is cold at 18 C.
Click to expand...

Seems good to me - glad the leak is sorted. Stick with it.

Mark
 
I've managed to push my 920 to 3.5Ghz 100% stable without having to change anything in the BIOS at all but the FSB. All volts are on auto and I only have the intel stock cooler (albeit I do have some mx2 paste under it). I'm very pleased! The temps are about 31 at idle, i havent measured it at load yet but it must still be quite low because I am on stock volts..
 
sambo_joseph said:
I've managed to push my 920 to 3.5Ghz 100% stable without having to change anything in the BIOS at all but the FSB. All volts are on auto and I only have the intel stock cooler (albeit I do have some mx2 paste under it). I'm very pleased! The temps are about 31 at idle, i havent measured it at load yet but it must still be quite low because I am on stock volts..
Click to expand...

Very encouraging - you seem to have a good chip there.

Mark
 
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