alex666
02-08-2005, 12:37 PM
Greetings PC Guide, it's been a while.
I know that psus have +3.3, +5, and +12 volt rails, plus the -12 and I think it's the -5, or something like that. Plus, some actually have 2 +12 volt rails.
Anyway, my question is as follows: which system/mobo components are run by the 12, the 5, and the 3.3 volt rails, respectively? For example, is system memory run off the +5 volt rail, the hdd off the 3.3, video card off the 12, whatever? I'm asking this in the hope that I can look at my voltages (either in the bios or through something like MB monitor) to see if a particular system component problem (e.g., memory) I'm having might be associated with the voltage output on the particular rail that powers that component.
I've read up on psus quite a bit, but I've never come across an article that matches components to rails, if indeed that's how it works. Anyone know a good reference to this question? I've googled, but no luck. Thanks.
marty
I know that psus have +3.3, +5, and +12 volt rails, plus the -12 and I think it's the -5, or something like that. Plus, some actually have 2 +12 volt rails.
Anyway, my question is as follows: which system/mobo components are run by the 12, the 5, and the 3.3 volt rails, respectively? For example, is system memory run off the +5 volt rail, the hdd off the 3.3, video card off the 12, whatever? I'm asking this in the hope that I can look at my voltages (either in the bios or through something like MB monitor) to see if a particular system component problem (e.g., memory) I'm having might be associated with the voltage output on the particular rail that powers that component.
I've read up on psus quite a bit, but I've never come across an article that matches components to rails, if indeed that's how it works. Anyone know a good reference to this question? I've googled, but no luck. Thanks.
marty