What could happen if i plug in a 400 watt graphics card into a 350 watt supply?

my graphics card burned out that was original. i replaced it with a geforce gts450 1gb ram. it seems to be working perfectly normal. but i just want to know if it will slow down my computer or effect anything in the future.......and also is the geforce evega gts450 a good graphics card. i paid 160 in total for it.|||What's going to happen? It's not going to work, that's what's going to happen. The graphics card is rated for a higher amount of power than yours can produce.



The GTS450 is an ok card, but the newer GTX460 is much better.|||Ninja is right. You can also suffer from a "brown out", in which the computer cannot supply enough power to the other parts. Certain devices may not work properly at random. You should always have the correct amount of power suggested at a MINIMUM of what the video card requires.|||You can fry the PSU and if the PSU screws up your risking your entire system.