Finally got a 5450 card and so far as been great, got TMT and MPC-hc to bitstream the HD codecs and all is well on that regard.
Now, i started to get a weird problem that i think maybe related to EDID issue, hopefully you guys can give me some direction. Have 5450 connected to a Pioneer 1018 receiver and LG 47"-Epson 8100 projector, have a monoprice 4x2 HDMI to direct the video to either TV or PJ, this setup worked great with my previous card, but since i installed the 5450 i lost 24hz, in fact all i get listed is 60hz. my other card was also ATI and i just switch the cards, w7 picked up and that out i installed it, right after install i had all the options available, when i selected 24hz it never "sticked", always defaulted back to 60. Since i tried to force 24hz i now lost all options, only 60hz, doesn't matter what display i use. Both are capabke of 24hz, as both PS3 and HTPC used that setting before... so, EDID issue? what u guys think? meantime i should plug in old card and get the EDID info, just in case :-)