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Complete Overclocking Guide: Sandy Bridge & Ivy Bridge | *ASRock Edition* - Page 58

Poll Results: Was this guide helpful?

Poll expired: Oct 17, 2012  
  • 80% (237)
    Yes (and I DO have an ASRock motherboard).
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    Yes (but I DO NOT have an ASRock motherboard).
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post #571 of 9489
Just ordered some arcticlean and will do as you adviced! Thanks.
post #572 of 9489
So I got 4.5Ghz Prime95 stable for an hour-long test, but max temps went up to 82°c (room temperature is ~70-75°F).. I'm not really comfortable with those numbers, and I'm certainly not CPU-bottlenecked with my 6950, so I went ahead and dropped the multiplier down to 42 (the meaning of life). @4.2Ghz with +.020 offset my max temp is 70°c after six hours of Prime95 blend, which is still way higher than my old Phenom II.

I'd have liked to see 5Ghz, but these temps are just too high. Maybe I'll try again in the winter.
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post #573 of 9489
Quote:
Originally Posted by fagoatse View Post

Greetingz, this is my frist post here so I'd like to say hello to everyone and thank for this amazing guide.
Nonetheless, I'm having some issues.
I'm a happy owner of 2500k + p67 pro3 2.00B ( LLC unlocked) + a cooler performing about the same as mugen or noctua, it's a polish brand so you won't know it but here's link anyway.*click*
I've followed the guide and stumbled upon a troubling problem.
My 2500k idles at low 30s disregarding clock speed which is ordinary, however, increasing the multiplier a bit, let's say to 38x causes temps to skyrocket within 10-15 seconds into 80s-90s.(the 1st core being the coolest and the 4th the hottest, 10-15 C degrees of difference between them). I tried 4.0 and ended up having over 90C in load(blend test) on all but 1st core(+0.005v gain, PLL @ 1.709v, LLC @ Level 3 used in all tests)
My questions are as follows: is my 2500k somehow the worst unit in the history(I had a e8400 that would die at 3.6 so yeah.. im cursed) or perhaps I didn't mount my cpu and/or heatsink / applied thermal grease correctly?
I recall being very careful when building this rig so I really dunno what could be the cause. However, something sprung to my mind. I applied Zalman STG2 by doing a drop of rice grain size on the center of the CPU and let the heatsink spread it during mounting. Perhaps this is the cause? From what I read, this thermal grease is very difficult to spread if not warmed up in water prior to applying : /.
So, do you think that warming it a bit and this time spreading it over manually with a rubber glove/credit card will do? (providing this is the cause of my problem).

You paste would be my best guess. It's interesting, as I seem to be get lower temps than others on this forum with the same settings when stress testing. When I built the system, I really slopped on the Arctic Silver 5, probably the best and worst job of apply thermal paste, I covered the entire chip, it was not particularly even, but I covered the entire chip. Then I slowly lower my CM 212 Hyper Plus. I actually rehearsed all this as I border on legal blindness (seriously, has come on the past few years), and so I really had to make sure I got it all lined up right. So I overcompensated with the paste, but I'll be damned if I'm not running pretty cool at 1.28vcore, at 100% load I never go past the mid-60sC.

Anyway, I don't mean to toot my own horn. I would guess that you may need to try a new application of paste. Maybe run this by a few other forums, especially any where there is a "cooling" sub-forum. PC Perspective has a cooling forum (full disclosure, I'm a mod there). But I would get feedback from others as well. Good luck.

marty
post #574 of 9489
Quote:
Originally Posted by fagoatse View Post

Just ordered some arcticlean and will do as you adviced! Thanks.

Arcticlean is nice for fast removal, though a 90% or higher isopropyl alcohol does the job just as well.

Quote:
Originally Posted by tootercomputer View Post

It's interesting, as I seem to be get lower temps than others on this forum with the same settings when stress testing.

It really depends on ambient temps, as you living in Utah won't compare to someone living in Arizona or Florida. But you're right in that paste application usually doesn't matter, as I've tried all of them and most of them grant the same temps if done correctly. I have experienced times where too little or too much have caused a spike in temps, but remounting always fixes it.
    
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post #575 of 9489
Quote:
Originally Posted by Kokin View Post

Arcticlean is nice for fast removal, though a 90% or higher isopropyl alcohol does the job just as well.
It really depends on ambient temps, as you living in Utah won't compare to someone living in Arizona or Florida. But you're right in that paste application usually doesn't matter, as I've tried all of them and most of them grant the same temps if done correctly. I have experienced times where too little or too much have caused a spike in temps, but remounting always fixes it.

Yep, your are correct about ambient temps, and I had mentioned that in a prior post. But the temps this fellow was reporting went beyond ambient temps and suggested more of a hardware/cooling issue. I have to laugh at the job I did on my 2500k, it looked just terrible, sloppy, but I got the whole chip covered, and I think I would up with a very good coating once I tightened the hsf. I tried the rice trick nce, and ended up having to redo the paste application.
post #576 of 9489
Quote:
Originally Posted by tootercomputer View Post

Yep, your are correct about ambient temps, and I had mentioned that in a prior post. But the temps this fellow was reporting went beyond ambient temps and suggested more of a hardware/cooling issue. I have to laugh at the job I did on my 2500k, it looked just terrible, sloppy, but I got the whole chip covered, and I think I would up with a very good coating once I tightened the hsf. I tried the rice trick nce, and ended up having to redo the paste application.

The rice/pea sized method doesn't work well for HDT coolers like the Hyper 212+ because of the gaps in between the heat pipes, it simply just prevents from having a good spread. The Hyper 212 Evo fixed that by eliminating the gaps between the heatpipes to a bare minimum, otherwise there is no big difference between the 212+ and Evo.

Edit: Also, sloppy mounts are not always a bad thing. Look at all the TIM applications manufacturers use on GPUs, despite putting too much and having a sloppy application, reapplying TIM to GPUs doesn't usually net much better temps.
Edited by Kokin - 5/14/12 at 11:28pm
    
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post #577 of 9489
I spread my thermal paste evenly and thinly, covering the whole square on both the CPU and the bottom of the HSF, my 212+. Is that inferior to putting the paste in between the pipes somehow?
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post #578 of 9489
Quote:
Originally Posted by tootercomputer View Post

You paste would be my best guess. It's interesting, as I seem to be get lower temps than others on this forum with the same settings when stress testing. When I built the system, I really slopped on the Arctic Silver 5, probably the best and worst job of apply thermal paste, I covered the entire chip, it was not particularly even, but I covered the entire chip. Then I slowly lower my CM 212 Hyper Plus. I actually rehearsed all this as I border on legal blindness (seriously, has come on the past few years), and so I really had to make sure I got it all lined up right. So I overcompensated with the paste, but I'll be damned if I'm not running pretty cool at 1.28vcore, at 100% load I never go past the mid-60sC.
Anyway, I don't mean to toot my own horn. I would guess that you may need to try a new application of paste. Maybe run this by a few other forums, especially any where there is a "cooling" sub-forum. PC Perspective has a cooling forum (full disclosure, I'm a mod there). But I would get feedback from others as well. Good luck.
marty

Thanks for your input but it's no big deal, really. I'll be re-applying it until I get satisfactory results. I know what I did wrong though. I applied TIM, booted once to see if it's working and went to bed. The point is that I'm using ZM-STG2, which is known of it's quite dense structure so it's only natural that it didn't spread correctly. Especially when it wasn't even warmed up in water or something. Basically, It's like trying to fry something w/o oil, it'll surely burn.
Since my cooler is of HDT kind and appears to be quite similar to that CM you spoke of, I guess this method of applying will do - http://benchmarkreviews.com/index.php?option=com_content&task=view&id=170&Itemid=38&limit=1&limitstart=5
post #579 of 9489
The z77 pro4 does not seem to play terribly nicely with my 2500k.

I played around last night and Im fairly certain that LLC is backwards on the Pro 4 with Bios 1.10. At 100% setting, I see heavy vdroop, and at 0% setting I see vcore overshoot the target. I have settled on 50% which still has some vdroop, but its fairly steady.

Unfortunately the pro4 is seems to be a rather poor overclocker. I was able to get my 2500k to 4.8 stable with only vcore on my old asus p8p67 pro at under 1.4v. In fact, I was able to get 5.0 on 1.47v pretty stable. On the asrock v77 pro4, the best I can muster on vcore only is a shakey 4.5. Upping my 16GB of ddr3 to 1.550v seemed to help a little, and I am now running comfortably at 4.6. I have disabled c3 and c6, and upped all my power and current limits to 400 or so. Unfortunately I cant seem to get anything resembling stability above 4.6, even up to 1.44v. My only solace is that I can now make use of quick sync for my video encoding - assuming I ever find an encoder that plays nicely with my set top BR player.

Anybody have any suggested settings to push a known good chip past 4.6 on the pro4? I see disabling spread spectrum, but I haven't needed to do that with other boards in the past.
    
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post #580 of 9489
Hey guys, soooo whats is a safe value to run 2500k 24/7? I mean, lets say that my temp is only hiting 70-80C when I stress, so temp is OK, what value would be good for a Vcore?
Is 1.45 or 1.50v acceptable for load in 24/7 config?
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