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Old 05-09-2005, 05:00 PM   #1 (permalink)
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Default CPU VCore and PSU

From my other thread on CPU-Z: Why are my processor temperatures fluctuating so much? Could it be my PSU (which is a thermaltake, not something that came with my case, although I used to have one of those)? Could it be my motherboard?

I have an intel P4 530 processor, stock cooling and clock, the auxilliary power is plugged in, and I get anywhare from 1.2ish-1.6ish (it seems to go to specific voltages, there are some within that range that I have not yet seen, but I could be wrong). The machine runs stable however (I define "stable" as in it doesn't crash overnight)

I must this computer functioning next weekend, so any help is appreciated (if there is something wrong it will take about a week to get new parts).
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Old 05-10-2005, 03:13 PM   #2 (permalink)
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I wouldnt worry about it too much. Although, generally, voltages shouldnt fluctuate more than 5% from the norm.

If I were to point my finger at what device is to blame, I would blame the motherboard's voltage regulator. The PSU doesnt supply 1.5V, it gets supplied by the mobo.
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Old 05-10-2005, 03:18 PM   #3 (permalink)
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Thanks. Maybe now I'll be able to RMA my mobo... almost all of the temperature sensors on it are broken . Are voltage regulators normally a problem?
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Old 05-24-2005, 06:50 PM   #4 (permalink)
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Ok, this issue continues to bother me. Here is a list of voltages I took a few minutes ago:
1.344
328 (assme a 1. before all numbers)
360
344
360
344
392
360
376
328
344
328
344
328
376
328

Each new measumrent is about 1-2 seconds frm the previous one. A few more lists:
392
328
360
344
376
296
408
296
376
312
392
312
360
328
344
328
344
392

And:
296
376
328
376
312
344
328
344
328
344
328
312
392
296

My same questions still apply, and hopelully that data will prove helpful
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Old 05-24-2005, 07:34 PM   #5 (permalink)
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The Intel website says that the acceptable voltage range is 1.25-1.40V.

Those voltage readings dont seem that bad. 99% of them stay within the 5% rule...
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Old 05-24-2005, 07:57 PM   #6 (permalink)
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OK, so they dont mean something is wrong, and can be attributed to environemntal things such as the quality of my AC power, although I run it trough a UPS, so that shouldn't be an issue.
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Old 05-24-2005, 09:31 PM   #7 (permalink)
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Your UPS should be conditioning your AC to make it pretty close to perfect. I think that slight manufacturing flaws are to blame. I wouldnt worry about it.
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Old 05-24-2005, 09:32 PM   #8 (permalink)
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Quote:
Originally posted by Elbatrop1
Your UPS should be conditioning your AC to make it pretty close to perfect. I think that slight manufacturing flaws are to blame. I wouldnt worry about it.
UPS's are not exactly power conditioners and do a poor job at conditioning power
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Old 05-24-2005, 09:41 PM   #9 (permalink)
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Quote:
UPS's are not exactly power conditioners and do a poor job at conditioning power
You are thinking about a regular standby UPS. The standby type just acts passively and controls spikes, etc. Then there is the "In-line" or "Line-Interactive" that will do the above plus filter the AC and adjust as neccessary.

http://catalog.belkin.com/IWCatSecti...tion_Id=201476
http://computer.howstuffworks.com/question28.htm
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Old 05-24-2005, 09:54 PM   #10 (permalink)
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Yeah the more expensive UPS's

Oh well, I need a pair of power conditioners as well as another UPS
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