Well both of the cpus will more that out do any thing a 9800 gtx will put out, concider a more powerful video card such as the 4870x2 if budget allows. Also using a cheepo powersupply in the long run is going to cost you. I lost a brand new mobo, ran and video card to a case psu. Look for a power supply in the 550-700w range for your system from a reliable company such as antec, PC power and cooling, etc. but both of the cpus are going to be quite fast.
AMD Phenom II X4 810 2.6GHz Socket AM3 95W Quad-Core Processor Model HDX810WFGIBOX
GIGABYTE GA-MA790FXT-UD5P AM3 DDR3 AMD 790FX ATX AMD Motherboard
Vigor Monsoon III LT Dual 120mm Fan CPU Cooler Socket 1366 Ready
Patriot Viper 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Dual Channel Kit Desktop Memory Model PVS34G1333ELK
EVGA 512-P3-N871-AR GeForce 9800 GTX(G92) 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card
Rosewill Conqueror RPS-01-WB500P Triple 120mm Fans Steel ATX Mid tower Computer Case with 500W Power Supply
*Prices in the wish lists are different because there are combo deals applied to my prices*
*In case you were wondering the case comes with a power supply*
Which gaming computer do you think is better considering the price and components?
I might not want to do this till later, but add in a little side note If its possible to over clock with any of these components
*If the computer doesn't look like it would work please tell me what I need*
I keep getting an error when I try to see your wishlist...no idea what you had in mind for a HD. Here's something though... minus the HD. Spend few more dollars on on a heatsink, and OC that cpu. Also I added another fan to this build ...this case runs 3x120mm fans..the third one goes up front.
I think either way you're weighting down a decent system with a crappy video card.
In general if you're gonna get something nice and high end like an i7 you'll need a 4870, 260, 4870x2 or 295 or you're really just setting up more future expenses. You have a processor that is top of the line now, and for the next year at least (the new stuff comin out from intel this year is all lower tier stuffs), you'll have a video card that was outdated 8 months ago...