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How much power do motherboards draw?

post #1 of 9
Thread Starter 
Well in the process of picking a PSU, I already have one in mind (Corsair 750 HX) for a SLI/CF of either a 7870/7890 or the Nvidia equiv. I'm just wondering how much do motherboards draw by themselves?
post #2 of 9
Quote:
Originally Posted by venomblade View Post

Well in the process of picking a PSU, I already have one in mind (Corsair 750 HX) for a SLI/CF of either a 7870/7890 or the Nvidia equiv. I'm just wondering how much do motherboards draw by themselves?

Absolutely nothing.By themselves they sit there are stare at you.The things you plug into them require power.For an accurate measure of your sytems power needs check here
http://www.overclock.net/t/1140534/psu-calc-final-release/0_20
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post #3 of 9
Quote:
Originally Posted by venomblade View Post

Well in the process of picking a PSU, I already have one in mind (Corsair 750 HX) for a SLI/CF of either a 7870/7890 or the Nvidia equiv. I'm just wondering how much do motherboards draw by themselves?

They don't draw a lot to be considered. If you want to find out just focus on the chipset TDP.
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post #4 of 9
For the most part i believe the draw for the motherboard is minimal. Definatly not worth trying to put in the calculation. If you are having to add in for mobo draw cuz you are near a watage level your probably going to want to jump up to the next highest PSU. As we dont yet know what the draw is for the now Nvidia cards you may want to hold off to be safe.
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post #5 of 9
Thread Starter 
Quote:
Originally Posted by trumpet-205 View Post

They don't draw a lot to be considered. If you want to find out just focus on the chipset TDP.

That's kind of what I was referring to. Do they list chipset TDPs on the motherboards specs? I haven't really seen that. Maybe because it's so minimal it's not worth typing it out?

@Redwoodz, that's a handy little app by the look of it. I'll definitely give it a try
post #6 of 9
For Intel, it is pretty easy to find out. Here is Z68 TDP (6.1 W)
http://ark.intel.com/products/chipsets/52771

For AMD, I haven't seen AMD listing its chipsets' TDP. It can be found on Wikipeida.
http://en.wikipedia.org/wiki/Comparison_of_AMD_chipsets
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post #7 of 9
Thread Starter 
Oh wow, so knowing that. I have a friend who wants to know if his Q9550 and 7970 rig will run on a 500 Cooler Master PSU. The CPU is 95, 7970, 210w and adding in everything else like mobo that doesn't really add much, so it's safe to say he's in the clear?
post #8 of 9
Quote:
Originally Posted by venomblade View Post

Oh wow, so knowing that. I have a friend who wants to know if his Q9550 and 7970 rig will run on a 500 Cooler Master PSU. The CPU is 95, 7970, 210w and adding in everything else like mobo that doesn't really add much, so it's safe to say he's in the clear?

Provided that PSU is a quality unit, then yes.
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post #9 of 9
the 500 watt might be pushing it a little. the 7970 is recomended for use with a 500w or greater even though it only uses about 225w to power. but with the 95w cpu i would go with something at least over 600w
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