Voltage Fluctuations

govtcheez75

Platinum Member
Aug 13, 2002
2,932
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76
Here is what I'm running:
A64 Newcastle 3200+ running 240X10 at 1.5x110% in bios (1.63V) Temps are 40degrees idle, 63degrees load
1GB 512MB X 2 PC4000 Geil Ultra
DFI UT Lanparty nf3-250gb
36GB Raptor + 80GB WE SE
520W OCZ PowerStream


...now I'm ROCK SOLID stable at this Core Voltage, and nothing less. If I try anythine less, it reboots, or errors out in Prime95, but at the current settings, I can run Prime95 Priority 10 Torture Test, 3DMarks, Memtest for 48+ hours with no problems.

...the problem that I have is the Core Voltage fluctuates from 1.63V idle, to 1.71V on load! Is this normal? I know that the OCZ PowerStream iis considered one of the most stable PSU's out there...but I can't remember if I had such fluctuations with my 350W Antec, or 450W TTGI/SuperFlower. Should I be worried? Do I need to RMA the PSU? Should I mess with the adjustable settings on the back of the PSU?

...I'm using CPU-Z, and SpeedFan to get the voltage readings (which gives me the same readings)...is there any other program that I should try?


Thanks.
 

CheesePoofs

Diamond Member
Dec 5, 2004
3,163
0
0
those program's read the voltages from the bios, which doesn't give acurate readings about voltages. Don't worry about it, if its stable, its good.
 
Apr 15, 2004
4,143
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Fluctuating Vcore is typically a problem with the motherboard and not the PSU. I had a board that undervolted when under load (well so far all of them have to some extent) but this one was really bad. Got as low as 1.42V from the default 1.525V of my Northwood. Replaced it and now my Vcore goes from 1.536V idle to 1.488V load on the same PSU. If your board overvolts under load drop the Vcore in bios a little.