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#11
I don't know about OP problem, but I had similar issue with my 47" TV hooked up to computer and I investigated it deeply few years back. It came out that for some very strange and cheap reason some TV's don't support full 1080p RGB info. The 1920 pixel video received over HDMI is converted into some stripped down 960 pixel as far as RGB color info goes, processed and then expanded back to 1920pixel (in other words color info is shared by two adjoining pixels). This processing is fine for video and pictures, but looks horrible when it comes to small font computer text display. There is simple test for this, if OP wants I could look for it. I don't remember "why" details anymore but VGA looks better.
If OP problem is related to mine and he will be using his TV as a main display, no video card will solve this issue. Another problem here is that this info is not revealed in any manufacturers specs and one would have to go to TV forum or test himself to see if given TV has that limitation, but probably most less expensive ones do, except top of the line and dedicated computer monitors.