AMD Radeon HD 7750 on an HP DC7900 Mini Tower

Hey all, I am looking at getting a video card for my new computer (finally, a tower) and had some questions about compatibility. I found this spec sheet, but I was not able to find the answers to my questions.
I have an HP DC7900 Mini Tower CMT with an Intel Core 2 Quad Q9550 processor and a 365 W power supply. I am currently looking at two video cards: this one and this one.
I know that I would need to upgrade my power supply for the first one, but assuming that I did so, would my computer have any problems accepting either of those video cards?
If not, which would you reccommend? I know the AMD is faster, but is it fast enough to be worth the extra money and the 50-60 for a power supply? Also, I heard that AMD cards were not compatible with as many games.
Thank you very much in advance for your help,
Vuk

Does no one know?

I don't know for sure but you might have difficulty fitting the graphics card in a mini tower. As your mobo will be mounted vertically then the card will need to go horizontally, I can't find a width but the dimensions I could find are:

Length 5.70 inches
Height 4.38 inches
Dual-width

link

Newegg lists them as 6.7" x 4.38"

AMD cards I've had work fine with most games.

One reviewer said

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I could not get it to work properly until I upgraded my good power supply from 350w to a higher output P/S.
Great product and easy install.

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About the GeForce card.

Thanks. I have been having so many problems with my refurbed mini tower and tech support is being no help, I am just gonna give up on the piece of crap. I am gonna wait till I got the money and built my own rig.

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Originally Posted by Vuk

Thanks. I have been having so many problems with my refurbed mini tower and tech support is being no help, I am just gonna give up on the piece of crap. I am gonna wait till I got the money and built my own rig.

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If you do and you're in the UK I can recommend the Novatech Barebones bundles, good value and very good support.