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post #21 of 10702
Almost 2 days...still have ss of it somewhere. Ill find it and post it tomorrow when I get on my pc(on phone right now)
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post #22 of 10702
Thread Starter 
hopefully I shall have a screenshot in the morning with more than 8+ hours prime. hopefully during that time my temps stay below the 75c mark. my highest core so far was72c, but temps usually stay in the high 60's. Hopefully the +.05 bump in vcore shouldn't really make that much of a difference in temps. catch ya'll later. wave2.gif
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post #23 of 10702
Thread Starter 
hey guys a little update:

so I bumped the vcore up by +0.5 to 1.472 (load volts, bios is set to 1.485v) and left prime running last night, well I woke up and found that my pc restarted after 8 hours of prime sozo.gif. sorry I dont have a screenshot but I do have the results.txt if that helps lol.

On top of that I thought maybe I could do something else to help the temps even further. I reseated the block and re applied some ic7 and let it cure a for a couple of hours, guess what it helped applaud.gif it shed a few degrees of the load temps eek.gif. I think this time round, that is the best seating I have got with the perfect amount of TIM. Anyways I'm doing another run on prime with the same volts and ambient temp, screenshot with temps will be up soon.

By the way if I bump up the vcore another +0.05 it will go to 1.49 (in bios), which I'm thinking is a little on the high side, what do you think?

Would you leave at 1.472 (load volts) with 8+ hours prime blend stable or bump up the vcore +0.05 to 1.49 and get it 12+ blend stable?


EDIT: sorry but I also increased all 6 fans on my rad from the lowest possible setting to about a 1/4(so its still silent biggrin.gif), which must have helped with drop in temps.
Edited by munaim1 - 5/1/11 at 8:12pm
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post #24 of 10702
Just curious man, how did you increase your fan speeds to max? I'm struggling with the same issue, I don't think my fans are running full speed so it's hard to get to 4.8ghz+.

We have the same Bios.
post #25 of 10702
Quote:
Originally Posted by munaim1;12778480 
hey guys a little update:

so I bumped the vcore up by +0.5 to 1.472 and left prime running last night, well I woke up and found that my pc restarted after 8 hours of prime sozo.gif. sorry I dont have a screenshot but I do have the results.txt if that helps lol.

On top of that I thought maybe I could do something else to help the temps even further. I reseated the block and re applied some ic7 and let it cure a for a couple of hours, guess what it helped applaud.gif it shed a few degrees of the load temps eek.gif. I think this time round, that is the best seating I have got with the perfect amount of TIM. Anyways I'm doing another run on prime with the same volts and ambient temp, screenshot with temps will be up soon.

By the way if I bump up the vcore another +0.05 it will go to 1.480, which I'm thinking is a little on the high side, what do you think?

Would you leave at 1.472 with 8+ hours prime blend stable or bump up the vcore +0.05 to 1.480 and get it 12+ blend stable?


EDIT: sorry but I also increased all 6 fans on my rad from the lowest possible setting to about a 1/4(so its still silent biggrin.gif), which must have helped with drop in temps.

well if it restarted at 1.472 after 8+ hours, i would say back down the overclock or up the v. entirely up to you but if it restarted i wouldnt consider it stable.
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post #26 of 10702
8 hour blend test is fine for 24/7. I found that an 8 hour blend test failed the new AVX Linpack for SP1 within 5 minutes. Took a bit of tweaking to get AVX Linpack stable. Then again the 8 hour prime blend saw about a month and a half of daily use without BSOD so I'm not saying blend is unreliable, just saying it's not the best per se.

Depending how long you want to keep your chip, it may not be worth going above 1.48v to 1.49v although your cooling is amazing. If your board allows you to do this, drop CPU PLL below 1.7v, I actually tweaked it down to 1.65v to pass AVX Linpack and that seemed to have helped me. I think you can set the pwm frequency on the Asus boards up to 350hz, doing that may help you achieve stability at 5.1 w/ 1.464v as it lowers the ripple going into the cores. I'm just trying to suggest things that don't involve increasing vcore but ultimately vcore is king.

You must also consider your chip would likely be able to do 5 Ghz with much lower volts than most of us, but 5.1 is worth trying for tho.

Prime95 blend takes ages to be honest, AVX Linpack for sp1, although the temps and current draw on the cpu is much higher than blend, is a very quick efficient stability test. While prime95 blend might take 7 hours to pop up a BSOD, that OC would fail AVX Linpack in under 10 minutes, allowing you to spend more time tweaking and less time waiting for 8 hour blend runs to fail. If you try AVX Linpack however, it would be wise to lower your ambients, just to give you an idea cpu watts during blend sit at about 118w, for AVX Linpack I've seen 152watts so expect some serious heat. The only way my air cooling can handle that is sub zero ambients lol. I should go for WC but I gotta save 4000$ for tuition.

You have a very nice chip there.
Edited by Scorpion667 - 3/18/11 at 10:03am
    
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post #27 of 10702
Quote:
Originally Posted by E-Peen;12772155 
Same thing I'm wondering. I just got my rig built yesterday, OC'd to 4.5 and I got 70c max recorded temp over 8 hours of Blend.

Some say it's 75c, but I'm not sure.

My H50 keeps my 2500k @ 58C load @ 4.7 Ghz / 1.33 vcore wink.gif

Rasa 360 comes in today smile.gif
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post #28 of 10702
Thread Starter 
Quote:
Originally Posted by E-Peen;12778574 
Just curious man, how did you increase your fan speeds to max? I'm struggling with the same issue, I don't think my fans are running full speed so it's hard to get to 4.8ghz+.

We have the same Bios.

well it's not on max just a 20% increase on all the fans, sorry I didn't mention that im using a fan controller.

Also dropped the bclk back down and increased the multi to 51.

Quote:
Originally Posted by Blue Destroyer;12778579 
well if it restarted at 1.472 after 8+ hours, i would say back down the overclock or up the v. entirely up to you but if it restarted i wouldnt consider it stable.

well is 1.480 considered high? my temps are slightly better than before.


Anyways here is before I reseated the block and all fans where at the lowest settings.

nwc6qw.png


Reseated the block and increased all 6 fans on rad by to 20% and upped the vcore by 0.05 to 1.472


nydan6.png


I know its only an hour on both but gives an indication that reseating the block worked better for temps.

i think my next run will be a bump in the vcore by +0.05 and highest vcore of 1.48 and that will be as far as I go.
Edited by munaim1 - 3/18/11 at 10:08am
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post #29 of 10702
No one really knows how much volts these chips can handle, people will tell you different things. I've had no issues or degrading pumping 1.45v - 1.46v 24/7 for 2 months but my cooling is the bottleneck unfortunately so I have not had a chance to go any higher on the core voltage. My chip does 74c after 8 hours of blend, IMO you have nothing to worry about in terms of temps, stop trying to tweak it haha.
Edited by Scorpion667 - 3/18/11 at 10:12am
    
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post #30 of 10702
Thread Starter 
Quote:
Originally Posted by Scorpion667;12778796 
8 hour blend test is fine for 24/7. I found that an 8 hour blend test failed the new AVX Linpack for SP1 within 5 minutes. Took a bit of tweaking to get AVX Linpack stable. Then again the 8 hour prime blend saw about a month and a half of daily use without BSOD so I'm not saying blend is unreliable, just saying it's not the best per se.

Depending how long you want to keep your chip, it may not be worth going above 1.48v to 1.49v although your cooling is amazing. If your board allows you to do this, drop CPU PLL below 1.7v, I actually tweaked it down to 1.65v to pass AVX Linpack and that seemed to have helped me. I think you can set the pwm frequency on the Asus boards up to 350hz, doing that may help you achieve stability at 5.1 w/ 1.464v as it lowers the ripple going into the cores. I'm just trying to suggest things that don't involve increasing vcore but ultimately vcore is king.

You must also consider your chip would likely be able to do 5 Ghz with much lower volts than most of us, but 5.1 is worth trying for tho.

Prime95 blend takes ages to be honest, AVX Linpack for sp1, although the temps and current draw on the cpu is much higher than blend, is a very quick efficient stability test. While prime95 blend might take 7 hours to pop up a BSOD, that OC would fail AVX Linpack in under 10 minutes, allowing you to spend more time tweaking and less time waiting for 8 hour blend runs to fail. If you try AVX Linpack however, it would be wise to lower your ambients, just to give you an idea cpu watts during blend sit at about 118w, for AVX Linpack I've seen 152watts so expect some serious heat. The only way my air cooling can handle that is sub zero ambients lol. I should go for WC but I gotta save 4000$ for tuition.

You have a very nice chip there.
Quote:
Originally Posted by Scorpion667;12778934 
No one really knows how much volts these chips can handle, people will tell you different things. I've had no issues or degrading pumping 1.45v - 1.46v 24/7 for 2 months but my cooling is the bottleneck unfortunately so I have not had a chance to go any higher on the core voltage. My chip does 74c after 8 hours of blend, IMO you have nothing to worry about in terms of temps, stop trying to tweak it haha.

At the moment im doing 1.472 which is just over 8 hours blend stable. About the pll and pwn frequency, I will definitely take a look at those. Thanks for the suggestions applaud.gif +rep

come on tongue.gif this is ocn, tweaking is only good if it actually works!! biggrin.gif
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