What's the best AGP 4x video card currently on the market for running the Source Engine?

I have a Biostar M7VIB motherboard, and I need to upgrade it with the best possible video card currently on the market. This MoBo has an AGP 4x slot, and I'm looking for maximum performance possible with my old hardware just long enough to complete a project, because once it's complete I'll be given a Dell XPS laptop to work on from that point forward (provided my project is accepted).



So my question is two fold and please let me know to which question you're answering.



#1: What is currently the best AGP video card on the market for the Source engine (price IS NOT a factor)?



#2: What is currently the best "bang for the buck" AGP video card on the market for the Source engine (price IS a factor)?|||what source engine .. most 8X cards will work in a 4X slot .. maybe an nvidia 7900 agp ..|||This is true AGP 8x may work in 4x but some card may burn your mainboard bacause it use another power voltage :))

AGP Card 4x now only found in secondhand market and ebay. Geforce MX 440 is the last chip use AGP 4x.

I think with a AGP 4x you can't edit 2005-2006-2007 Games' file well. If you want work it that bad, i suggest you buy a new PC ( today a good and new PC isn't too expensive about 400$-500$ you can buy a good one which can use to edit 2005-2006 games' file well )

Good luck and have fun.

Addtional Info:

#2: What is currently the best "bang for the buck" AGP video card on the market for the Source engine (price IS a factor)?

Best bang of the buck Video card i know of Source Engine is Video Card With Chip Geforce 8800 GT ( not GTS) and > 250MB DDR3 and your can buy one at 100$-250$.

If you have money PC with Dual (SLI) (Geforce 8800 GTS 512MB DDR3) x2 will let you have outstanding work. :)|||Source is pretty flexible. A friend of mine managed to get HL2:EP2 and Portal running fine on his ATI Radeon 9600Pro. Since I'd be a little worried the slot not being able to produce enough power to some of the higher end cards, The aforementioned 9600PRO would probably be your best bet in terms of reliability and performance for a decent price. The 256MB version of this card will run you from $40-$75 USD through eBay and the like, and should work fine for your system.