I have a Radeon 5770 and i have 2 monitors and a hdtv that i would like to able to run off of that card. After hours of searching and reading I think i have found an adapter that will work. It is a passive displayport to hdmi adapter.
http://www.amazon.com/gp/product/B001CXV92W/ref=s9_sims_se_p23_i1?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=auto-no-results-center-1&pf_rd_r=04AEGGXJA8VAWFJHWJ55&pf_rd_t=301&pf_rd_p=480051571&pf_rd_i=Bizlink%09KS10006-131
What i can tell form reading the support page from amd about validated displayport adapters.
http://support.amd.com/us/eyefinity/Pages/eyefinity-dongles.aspx
I think this won would be considered the equivalent part by Accell under the bizlink KS10006-131
but i'm still not sure if this adapter will work
http://www.amazon.com/gp/product/B001CXV92W/ref=s9_sims_se_p23_i1?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=auto-no-results-center-1&pf_rd_r=04AEGGXJA8VAWFJHWJ55&pf_rd_t=301&pf_rd_p=480051571&pf_rd_i=Bizlink%09KS10006-131
What i can tell form reading the support page from amd about validated displayport adapters.
http://support.amd.com/us/eyefinity/Pages/eyefinity-dongles.aspx
I think this won would be considered the equivalent part by Accell under the bizlink KS10006-131
but i'm still not sure if this adapter will work