[quote name='fmarxnge']Do you all think it's possible to get away with a 430 watt PSU with this?[/quote]
It's entirely possible. The truth is, most people waaaay overestimate how much power is needed to run their system (and even the video card manufacturers tend to pad their minimum power requirements). Don't get me wrong, it's never exactly a bad thing to err in the way of too much capacity, but don't feel it's at all necessary. I see recommendations for 700W or 1000W PSUs on some boards and it boggles the mind. 500W is more on the sane side, yet still with a very comfortable margin for most people.
To give you an example, you'd need to be running SLI 8800GTX cards, a Q6600 Core 2 Quad CPU, 4GB RAM and 2 HDD to actually use up all those 500 Watts.
Click on the link below and fill out the form with your system specs. It looks like a tedious list to fill out, but most of it is either easy stuff or stuff you won't have.
http://www.extreme.outervision.com/psucalculatorlite.jsp
Chances are, if you have a typical system, your power draw is well below 430W. It's likely more in the 360W range (and that's even factoring in an 8800GTX instead of the 8800GT, which is a much more power efficient card).
The more important thing isn't total wattage as much as the rating on your 12V rails. Make sure you meet the amp requirements for the card and you should be set. (EVGA's top of the line 8800GT SSC recommends a 400W PSU with 22 Amps on the 12v rail for a single card; 450W and 24 Amps for SLI.)