Am2+ advice for non-gamer - 790gx or not?

I am new to AMD builds and am looking for some advice on what motherboard to use. I plan to pair with a phenom II 940. I am not interested in gaming and will likely never use the system to play games; I am mainly upgrading to give myself a better rig for video encoding and something that will run Windows 7 better than my current setup can.

I am on a somewhat tight budget and since I have no intention of gaming I was considering going with a 790gx board and using the on-board graphics rather than using a discrete graphics card. I know everyone's first reaction is "don't do on-board graphics!" but keep in mind I don't plan to play games on the system. That being said, if anyone has any performance-based or budget-based reasons why this seems like a bad idea and has some suggestions for alternatives, I'd love to hear them.

Also, if 790gx seems like a good idea, does anyone have recommendations for a good 790gx motherboard?

Thanks!

get the quad phenom II 940 get a video card for for video encoding the gpu of the video card does video encoding
too you don't need an expensive one 50 to 70 bucks get you one good enough maybe someone with more expertise can help better the 790gx looks like an nvidia card is best a 9600gso or better?
http://www.maximumpc.com/article/f [...] ly_upon_us
http://www.anandtech.com/video/showdoc.aspx?i=3339
for the motherboard are you going to use ddr2 or ddr3 memory

good deal going on right now 9600gso $34.99 After Rebate Free Call Of Duty: World at War Game good game to
give to someone or sell for the price of the card
http://www.fatwallet.com/top-deals [...] ideo-card/
this seems like a good value board ? with onboard graphics too ATI Radeon HD 3200
http://www.newegg.com/Product/Prod [...] 6813135235
http://www.tbreak.com/articles/44/ [...] Page7.html
http://www.legitreviews.com/article/904/6/