I'm trying to decide about putting together a HTPC vs a line doubler or quadrupler. But I can't figure out what the ATI Radeon puts out for a horizontal refresh rate- 31K for 480P, 45K for 720P, 60K for 960P or 1080i. I'm connecting up to an LCD proj that can scan to 100K. Is the new ATI 8500dv wonder all in one out yet? Are these cards compatible with an HDTV card?