Quote:
Originally posted by jtroutma
Ok ok ok My math skills are not completely up to par.. (maybe that is why I cant pass Calc.3  ) Anyways....
Ben... your saying that if he gives those fans a positive 12V line an a negative 5V line, then that would produce a 17V line?????
Sorry that I dont follow you but that doesnt sound like it will work.. can you please explain...
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I'd be happy to!
The standard mod that we all do, known as the 7V mod involves wiring a fan to the +12 and +5 lines (which are available on the Molex connectors). The difference in voltage between those two lines is: 7V!
So if you want 17 volts, you'd wire a fan to the -5 line (you'd have to tap into the mobo connector) and the +12 line.
I never believed that it worked, or that it was a good idea, but it does seem to. I saw an issue where the 7V mod would actually feed current back up the +5 volt line, through the regulator and I thought: that can't be right... but what's actually happening is that the current comes from the +12 line, is dropped to +5 (because the other components keep it at +5) and it feeds another component, and actually relieves the PSU on the +5 line. (Actually, in electricity everything is backwards, where the electrons, negatively charged, travel from the low point (GROUND) to the high point (+5 or +12), but that's too theoretical).
If anything, wiring something that way might make the PSU voltages shift a bit, so if your system is sensitive (highly OC'd), and/or you have a cheap PSU, check your voltages before and after.