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450w GPU on 400w psu?

Last response: in Graphics & Displays
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Anonymous
July 24, 2013 8:38:46 AM

I was wondering if a graphics card that requires a 450 watt PSU work on my 400 PSU? will it work? even if it does, will it explode or something? :??: 

More about : 450w gpu 400w psu

a c 735 U Graphics card
July 24, 2013 8:44:04 AM

Depends on the card and what PSU.
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July 24, 2013 8:44:22 AM

You must feed a GPU with the wattage it requires. Most likely the 12V+ rail wattage, not the total of the PSU.

If you use a component with less wattage, you may eventually damage it, also it may not give you the performance it should.
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a c 735 U Graphics card
July 24, 2013 8:47:54 AM

You don't want to go cheap on the PSU it's the heart of your components.
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Best solution

a c 193 U Graphics card
July 24, 2013 9:01:43 AM

Graphics card vendors typically specify more total wattage than needed in the attempt (sometimes vain) to account for all the liar-labelled junk out there.
If your graphics card needs only a single PCIe power cable, unless you've got a stack of drives or a dozen fans it will run all day long on a 380W Antec Earthwatts.
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