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18A on 12V rail 550Ti??

Last response: in Components
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October 16, 2011 5:29:19 PM

I have a 'no-brand' 400W PSU with a 12V rating of 18A. What would happen if I used it to power a GTX 550Ti that requires 24A on the 12V rail?? (In other words how big would the explosion be?? :p )

More about : 18a 12v rail 550ti

October 16, 2011 5:38:18 PM

I'm guessing that if you're just underpowering it the gfx card would not run as good as it would with the proper amperage
October 16, 2011 6:15:47 PM

So technically it could be fine??
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a b ) Power supply
October 16, 2011 6:19:56 PM

with 3d running the machine could become unstable
a b ) Power supply
October 16, 2011 6:36:44 PM

Other than a high chance the power supply will just plain out fail and give out some cancerous smoke alongside a good firework show and a pc that has everything fried. Not much.
a b ) Power supply
October 16, 2011 6:46:20 PM

it depends, it could fail in such a way as to damage other components
October 16, 2011 6:54:14 PM

Right I won't risk it so
a b ) Power supply
October 16, 2011 7:06:07 PM

i'm trying to help somone at the moment who was running a system off a 250W PSU that was at least 50W short in terms of 12V power, currently nothing works except fans, i'm loaning him a PSU and crossing fingers for him....
a b ) Power supply
October 16, 2011 8:14:20 PM

More than likely the PC will crash when you put the Vid card under load. Some power sensing Vid cards may not boot at all with such low amps. available on the 12v rail.
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