I do not know what the PSU labeling is. I asked about the card working since the connection is pcie X 16 and card is pcie 2.0 x16. THan it was mentioned that PSU requirement needs to be look at. The requirement for the card siad that it needs 400W.
Than you, waldojim, said that it is 375. THan coastie65 said that there is no 375. Dell said that I have 300 W. THan you and Live said that he was not telling the truth.
So now I am not sure what I have. But from your post your saying that I have the 375. So I might get card and see what happens.
Usually, when people move to dedicated cards, they switch to something quite powerful. Most times, the cards have such an extreme draw, that cheap power supplies are likely to have difficulty keeping up. This results in either a short lifespan, or in extreme cases, exploding powersupplies.
The card you are looking at has a marginal power draw. More than most OEM PC's are used to? Sure. More than the OEM power supply can handle? Not hardly. I would be willing to bet HP has sold thousands of machines using that exact same PSU/CPU/GPU combo you are putting together right now with no ill effects. There is a reason DELL/HP/Etc stick with video cards like the 6450-6670. They don't need extremely stable power supplies to handle them.
Go ahead, pick one up, and enjoy it. You have nothing to worry about in your machine, apart from Windows of course! Be ready to give Windows a bit of a fight with the transition, the best method is to remove all traces of the old card and driver before you install the new one. This way there is nothing stopping Windows from loading the new ones correctly.