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5V Lines

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Apr 18, 2001
Does the 5v line vary from powersupply to powersupply or are some brands just better. For example I have a 350 watt Antec and my 5v line is 4.91 while idle, if I had selected the ps next to it on the shelf would I get a 5v line while idle?



Senior Member
Dec 20, 2000
Albany, NY
In all honesty, they vary from PSU to PSU, particularly among generics. The chances of a more stable PSU increase with the quality of PSU you buy.


Senior Member
Nov 25, 2001
Niagara Falls, Ontario, Canada
Do you really want 5V though? IF it's 4.91 idle and 4.91 with everything spinning, then you are okay, and you get like 2% less heat than if you were running 5V. Everything should be specced to trigger cleanly at like 4.75V.

OF course if you are running cool and light and get power flakies, you might want a higher voltage, if however you're running hot but stable as long as you don't turn the central heating on, then you might wish for that 4.8ish instead of 5.2ish.

It's something I aim to experiment with when I get a board with decent temp monitoring. Tuning the PSU.

Road Warrior