I have an Asus P5B Deluxe Wifi-AP motherboard and I'm wondering what its max power consumption is.
For a "three 12V rail" power supply (ATX standard) one rail supplies the CPU, one rail supplies the PCI-E connector and the other 12V supplies power to everything else (hard drives, optical drives, motherboard). The 3.3V and 5V rails power USB devices and depending on the computer power some of the motherboard and RAM.
Anyway, I'm trying to see how much power my motherboard uses at max power consumption, but I have only been able to find one site that has it listed. The website said it was a ridiculous 170 watts at load and 135 idling. This seems really high, maybe they're counting RAM and other things like that in there, I don't know.
What I'm guessing is they are including components connected to the motherboard: Benchmark PC setup and PowerConsumptionOfP5B
If my motherboard really does use 170 watts at max load (~14 amps) then in addition to my single DVD drive and hard drive one of my 12V rails would be (sometimes) overloaded (has a max of 18A). This doesn't seem right.
I guess it doesn't really matter if my machine has been running fine for years, but I was just curious. I was looking at all my components today and seeing what power supply I needed for my GPU upgrade and the motherboard was the only thing I didn't really know about. For the longest time I've been under the impression that motherboards don't really use much power at all, but I may be wrong.
For a "three 12V rail" power supply (ATX standard) one rail supplies the CPU, one rail supplies the PCI-E connector and the other 12V supplies power to everything else (hard drives, optical drives, motherboard). The 3.3V and 5V rails power USB devices and depending on the computer power some of the motherboard and RAM.
Anyway, I'm trying to see how much power my motherboard uses at max power consumption, but I have only been able to find one site that has it listed. The website said it was a ridiculous 170 watts at load and 135 idling. This seems really high, maybe they're counting RAM and other things like that in there, I don't know.
What I'm guessing is they are including components connected to the motherboard: Benchmark PC setup and PowerConsumptionOfP5B
If my motherboard really does use 170 watts at max load (~14 amps) then in addition to my single DVD drive and hard drive one of my 12V rails would be (sometimes) overloaded (has a max of 18A). This doesn't seem right.
I guess it doesn't really matter if my machine has been running fine for years, but I was just curious. I was looking at all my components today and seeing what power supply I needed for my GPU upgrade and the motherboard was the only thing I didn't really know about. For the longest time I've been under the impression that motherboards don't really use much power at all, but I may be wrong.