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Odd temp changes and occurences

post #1 of 8
Thread Starter 
Well ever since I got my quad last week I have been trying to o/c it as much as I can but think I have hit a dead end. I have gone up to 3.5ghz on my quad but the temp changes are very strange. At say 356x9, under load, cores 1 & 2 will be about the same temp and cores 3 & 4 will be the same with a 3-4° difference between the two pairs. I think this is not too unusual even though I wish they were all the same. The strange thing is that when I go up to 385x9 and 389x9 the temps shift. At the beginning of stress testing using either p95 or orhos, cores 1 & 4 are 4-5° higher than cores 2 & 3. After a few minutes cores 1 & 4 dropped below that of the other 2 cores. Temps were 63,61,61,63 then they dropped to 58,61,61,58 and kept climbing to 59,65,65,59. Then all of a sudden they would change to 69,65,65,69. Once that happened I stopped testing in fear of overheating or potentially damaging the cpu.

My board has some horrible vdroop and needs absurd amounts of voltage to reach the high clocks. The vid is 1.2875 and I really don't think that I need so much voltage to run at these speeds. With the vcore set to 1.6v in the bios I can't even boot at 3.6ghz, it locks up when windows is loading. The only higher setting than 1.6v is 1.8v and I really don't want to try it. With a setting of 1.5325v, @ 384x9, voltage drops to 1.408 under load and fluctuates between 1.392v - 1.424v

An even stranger thing was when I was stress testing and all of a sudden my multi went down to 6. I have speedstep turned off and all of the other power saving features turned off as well. Even if I had them on, I don't think that it should drop under load?

Any ideas what could be causing these things or recommendations? I have run the same board with the same ram at 400x8 with 1:1 divider on an E2180 with no problems. I was able to boot at 400x9 with an E6600. The quad is the only one that is acting up. Even p95 and orthos shut down, which never happened with any of the other 2 cpu's.
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post #2 of 8
I suggest you upgrade your powersupply. Thats the likely cause.
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post #3 of 8
Thread Starter 
Is there a reason that you feel that the power supply is the culprit? I have been suspecting this myself but I really have no evidence to support this. I have been thinking that my MB doesn't like the quad much, but it seems that other people have been able to hit 3.6ghz with this board and same processor. Regardless, I ordered a new PSU and it should be here tomorrow. My current PSU doesn't have an 8pin connector and will most likely need one when I upgrade my MB.
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post #4 of 8
It's your PSU without a doubt.

I'm running my Quad at 3.6GHz, 1600 eFSB (400 FSB/x9 multi), and I've got the voltage at ~1.48 in the BIOS, 1.44v after droop, with a VID of 1.2625v. You should have no problems whatsoever with that board and CPU configuration, and your specs show your PSU as the weakest link by far.

Out of curiosity, which PSU did you end up buying?
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post #5 of 8
Thread Starter 
I ended up buying the Corsair 650TX. I still have to put it in the case, right now I have it connected outside the case to make sure it wasn't DOA. I didn't want to risk running all the cables and then the thing not work.

I'm hoping that I can get to 3.6ghz now, Our systems are pretty similar and I don't see why I shouldn't be able to hit 3.6ghz.
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post #6 of 8
Thread Starter 
Well it turns out that it wasn't my psu that wasn't letting me hit 3.6ghz. Sad to say it was user error. I just added more voltage to the NB and FSB and it booted right up. A first attempt with the new PSU at the settings I tried prior to installing it did nothing. Now I'm wondering if it was the increase in FSB votage or MCH? Right now I have +2 FSB and +3 MCH. I shall find out in a bit, but first I'm going to lower my vcore.
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post #7 of 8
My reason for saying it was the psu was that, if the psu cant deliver enough steady current to the proc, you will get unstable temperatures.
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Cosmos
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post #8 of 8
Quote:
Originally Posted by Mikecdm View Post
Well it turns out that it wasn't my psu that wasn't letting me hit 3.6ghz. Sad to say it was user error. I just added more voltage to the NB and FSB and it booted right up. A first attempt with the new PSU at the settings I tried prior to installing it did nothing. Now I'm wondering if it was the increase in FSB votage or MCH? Right now I have +2 FSB and +3 MCH. I shall find out in a bit, but first I'm going to lower my vcore.
Even though it was user error, getting a new PSU was probably something you would have wanted to do in the long run anyway. 430w seems way sketchy when you're dealing with the setup you're running. Fluctuating voltage to the cpu while overclocking = baaaad.
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Mr. Bubbles
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