Yep this is true Sil, there are a great many PSU's out there that say 450w when in reality true output is closer to 250w. I don't want my PSU to exceed 75% of its capacity at greatest demand, that way there is no issues with output, and it has a much longer life. There are only a few brands I will consider buying, although I have to say there are some new players in this market, formerly known for making good memory that make top quality PSU's. Also my case runs 5 fans, something people don't always consider when buying. I have very few issues if any and always have a little room to upgrade. Besides, that 750 I got came as a combo deal, I got a total of $135 off between rebates and such by buying it and my 8800GTS together, basically I got the PSU free. That is what prompted me to buy at that time. Just make sure what ever you buy is of good quality. Pick it up, if it is heavy that is a good start, light weights tend to be junk.