Originally Posted by Error 404
Generally when companies are making suggested power estimates, they're assuming you have a high end system which uses a fair bit of power. That leaves plenty of headroom for those with an average or low power system, meaning you can probably safely run a higher power graphics card with a less powerful PSU.
But don't go skimping on the PSU either, because OEM PSUs are almost always crap. The PSU I'm currently using is from an OEM case, and its crap; I could probably replace it with a 350 watt high quality PSU and it would work better!
So yes, the graphics cards will run fine with less than recommended power supplies, but you want to make sure the PSU is good quality and wont die on you, otherwise you'll be buying another computer.
normally they put lower specifications to lower computer owners buy....advertising....then the people buy and the computer just make caboom....