Suggestion for a cheap build

[mcopinger]

Hello,
I'm designing a computer for work. all it needs to do is run Microsoft office, display on a 1920x1080 monitor and extend to a projector. as for graphical inputs I'm looking for DVI, HDMI and maybe display port. I do have a motherboard and processor picked out all ready. gigabyte 760g and an AMD FX-4100. it's not that I can't design this computer myself but I'm not sure what the cheapest parts I can get way with are.

thank you

 

[AMD Radeon]

be specifi with your current mobo type, and how much u will spend

 

[mcopinger]

The Motherboard is the Gigabyte GA-78LMT-S2P AM3+ 760G mATX, I'm going to be using 2x2GB of 1333mhz RAM, got a blu-ray drive picked out, case picked out, cpu heat sink, seasonic PSU (not letting my company cheap out here) so really what I should've asked is what type of GPU should I use?

Price is going to be sub $500 and I'm well below that, company is providing hard drive and OS. for a GPU I'm leaning towards a 6450, passively cooled.