SBM, $500 Gaming PC, Graphic Card Option

http://www.newegg.com/Product/ProductList.aspx?Submit=E...

XFX PVT88PYHF4 GeForce 8800 GT 512MB 256-bit GDDR3 PCI Express 2.0 x16 HDCP Ready SLI Supported Video Card - $110 after $35 MIR
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

If you need to go cheaper, you can get a 4670 for about $70. I like this one for the cooler: HIS Hightech H467QS512P Radeon HD 4670 512MB 128-bit GDDR3 PCI Express 2.0 x16 HDCP Ready CrossFire Supported Video Card - $70 after $10 MIR
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Don't pay $145 out of pocket for that 8800gt. A 9800gt is the same thing, and cost $120, or just under $100 ar. Comes with aftermarket cooling too.

Nvidia is phasing out the 8800GT and substituting it with the 9800GT, in some cases it is the exact same card, just rebadged. They got a freaking great overclock on that card, i'm not sure if you can duplicate the overclock no matter what you try. A good choice would be this already overclocked MSI 9800GT with a good cooling solution for $100 after rebate
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Yeah, I'd have to agree with dirtmountain, this looks like a good substitute for the same price.

Those 9800GTs do look nice. Should have remembered...

+1 Nice OC'ed dual slot with a 4-pin fan connector (variable speed). Otherwise any well-priced 8800GT/9800GT should do the trick.

BTW, I later did some gaming with that PNY's mem at 2160, and no problems whatsoever. I'm wishing I took the time to try 2200MHz.

9800GT is a good choice. HD4830 is pretty much the same price and is slightly better. If you can afford a little more the HD4850 is a good bit better than either of them.

Also don't go strictly by that guide, it's outdated already. For example it recommends a e2180 processor but newegg has the e2200 for only a dollar more, definitely worth it. The smart deal in that price range is actually the e5200 for $83.
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

You can also do much better ram-wise than what they recommend. Honestly it's a pretty bad recommendation. After rebate $38-43 can get you twice as much ram that's of significantly better quality. And if you only want 2 gigs there's deals for very nice ram for $12-15, a lot better than the stuff they are recommending.
For 2 gigs I'd probably go with this;
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
For 4;
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Also for the amount they are saying to spend on that p35 motherboard you can and should get a p45.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Great card, overclock to 650 core 200 memory in ATI Tools or Rivatuner and enjoy all the performance of a 4850, which beats the 8800 GT pretty well. I just built a gaming rig for 700 USD with an E5300 @ 3.5 Ghz 4GB of RAM and 2 4830s Oc'd to 710 2180 and the damn thing is amazing for the price! Do not attempt my OCs I bought 2 after market coolers too.

+1

That price is the same as 9800gt/8800gt, which makes it a good deal if you oc. 4830 perform the same as 9800gt at stock, but it overclocks better than 9800gt and far better than 4850.
http://www.techpowerup.com/reviews/Powercolor/HD_4830/2...
http://www.techpowerup.com/reviews/Powercolor/HD_4830/2...
It use a severely downclocked and crippled high end core, instead of a normally performing mid-range core. It's easier to boost performance back up to normal level, instead of pushing it beyond what the core is designed to do.