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E8400 Stuck @ 3.789GHz - Page 3

post #21 of 52
Quote:
Originally Posted by Dregos View Post
I just tried Intel Burn Test for the first time and my temps were going sky high on a standard test. I stopped it when I saw it hit 78°. Should I be concerned with it getting that hot?

It only get 65° on Prime95 and doesn't ever really reach 60° when playing Starcraft 2.
The Tj. Max is about 95-100°C, so that's fine. However when you say 65°C, are you referring to the Blend test in Prime95? Try the Small FFTs for 10 minutes.

Did you adjust the memory yet?
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post #22 of 52
Thread Starter 
I changed the DRAM Voltage to 2.06 and tried the small FTT test in Prime95 at 425x9 FSB. Froze after 10 minutes. I then put the Termination Voltage and NB up 1 notch each (both @ 1.36) and blue screened after 10 minutes. My CPU was reaching about 69° on this test.

So I put the NB and Termination back to 1.34 and will now test @ 421x9. I don't seem to be making much progress in getting that FSB up but I think I am better off then before now that I am running the 5:6 ratio. I am disappointed that I am having so much trouble getting past 3.85GHz!

I do appreciate everyone's prompt suggestions.
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post #23 of 52
It sounds to me like there's probably too much heat at the CPU's cores. These temps are pretty high for this cooler; is it loose at all?

Also, please loosen the memory timings to the stock values of 5-5-5-15.
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post #24 of 52
Thread Starter 
Quote:
Originally Posted by TwoCables View Post
It sounds to me like there's probably too much heat at the CPU's cores. These temps are pretty high for this cooler; is it loose at all?
I havent reapplied thermal paste since I installed it, which was a couple years ago. (lol)

I am sure that is a contributing factor but the higher vcore makes my CPU run significantly more hot under load. 1.37v runs a lot cooler than 1.41. I guess I am limited @ 3.8 until I reapply thermal paste?

Also as I said before, it hardly reaches 55° when watching a CPU intensive Starcraft 2 replay. I use this game to test stability because if it runs for 20 minutes without crashing, I know it's a stable overclock.
Edited by Dregos - 4/7/11 at 2:24am
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post #25 of 52
Voltages increase temperatures more exponentially whereas frequency increases temperatures more linearly.

If your RAM is rated as 5-5-5-15 @2.0V-2.1V for 800MHz, then no wonder it's failing higher. RAM that needs that much voltage for relatively normal/loose timings at just 800MHz doesn't seem like very potential stuff to me. It sounds like your RAM is limiting you. That's my guess. Try 6-6-6-18 @2.15V.

Also, if you have four modules of RAM, stuff like higher Northbridge (MCH) voltages come into place. In general, it's harder to overclock with more modules of RAM.
post #26 of 52
Thread Starter 
Quote:
Originally Posted by Princess Garnet View Post
Voltages increase temperatures more exponentially whereas frequency increases temperatures more linearly.

If your RAM is rated as 5-5-5-15 @2.0V-2.1V for 800MHz, then no wonder it's failing higher. RAM that needs that much voltage for relatively normal/loose timings at just 800MHz doesn't seem like very potential stuff to me. It sounds like your RAM is limiting you. That's my guess. Try 6-6-6-18 @2.15V.

Also, if you have four modules of RAM, stuff like higher Northbridge (MCH) voltages come into place. In general, it's harder to overclock with more modules of RAM.
Smart idea. I adjusted the ram voltage and timings and you suggested and it seems to be SLIGHTLY more stable (6-6-6-18 1020MHz) . I was able to get about 4 more fsb out of it so far. (Currently @ 425x9). I haven't given it my gaming test yet but at least I'm not BSOD in prime anymore. I was getting BSOD @ 3.9Ghz. Should I keep loosening the timings until I reach 3.9GHz? How much can I loosen timings without losing too much performance in games and such?


edit: just crashed after intensive starcraft 2. I think I am going back to 5-5-5-15 421x9 for now...
Edited by Dregos - 4/7/11 at 3:44am
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post #27 of 52
Quote:
Originally Posted by Dregos View Post
I havent reapplied thermal paste since I installed it, which was a couple years ago. (lol)

I am sure that is a contributing factor but the higher vcore makes my CPU run significantly more hot under load. 1.37v runs a lot cooler than 1.41. I guess I am limited @ 3.8 until I reapply thermal paste?

Also as I said before, it hardly reaches 55° when watching a CPU intensive Starcraft 2 replay. I use this game to test stability because if it runs for 20 minutes without crashing, I know it's a stable overclock.
Is the heatsink loose at all? I mean, can you wobble it? Or, does it feel very secure and very tight?
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post #28 of 52
Thread Starter 
The heatsink feels tight at the base where it meets the processor. It didn't seem loose when I checked it.
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post #29 of 52
Quote:
Originally Posted by Princess Garnet View Post
Voltages increase temperatures more exponentially whereas frequency increases temperatures more linearly.

If your RAM is rated as 5-5-5-15 @2.0V-2.1V for 800MHz, then no wonder it's failing higher. RAM that needs that much voltage for relatively normal/loose timings at just 800MHz doesn't seem like very potential stuff to me. It sounds like your RAM is limiting you. That's my guess. Try 6-6-6-18 @2.15V.

Also, if you have four modules of RAM, stuff like higher Northbridge (MCH) voltages come into place. In general, it's harder to overclock with more modules of RAM.
Um if the ram he linked is what he has then it should run @ 5-5-5-15 since its runs at 1066mhz 5-5-5-15 @ 2.0-2.1v I actually have that set of ram myself. It works quite nice really.

But anyways I think it is prob your northbridge as the strap might be to tight for the NB to handle. You should prob use a different one if possable. And just set your timing to 5-5-5-15 @ 2.0v and try it from there since that is what your ram is specd at.

If it doesnt work then you have prob hit your limit on your cpu, especially if raising vcore, nb voltage, and termination voltage gains you no help. Then I would have to say its due to the mem divider. Also do more then just 1 notch for the north bridge, since as long as it stays under 60-65C it will be fine.
 
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post #30 of 52
Since the memory is rated for 2.0V - 2.1V, let's try running it at 5-5-5-15, 1066 MHz using 2.1V.
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It's a computer!
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i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
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250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
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