One note here.
Only the PCIe version of the Theater 650 has Dual Tuner support in Windows Media Center.
The PCI version Theater 650 is a Single Tuner Hybrid, even though it has both an Analog and a Digital antenna input, it will not show both tuners as available at the same time, you can only configure one tuner or the other in Windows Media Center, Switching Tuners would mean running setup and scanning for channels on the other Tuner Input, and the same again if you wanted to switch back later.
Since I own both cards, I thought I'd mention this tiny little difference between PCI and PCIe version of the cards.
Per your above posts, so to clarify ~ you were running with Windows 7's built in drivers for the TV tuner at first? (but you thought you had installed the 750's drivers). The tuner worked, but as you tested it, it had choppiness problems etc. IS that all correct?One addition comment about Windows Media Center - if you select Tasks --settings and to to TV, select Guide and then go to add missing channels I found many channels that were scanned but not included in the listing (available for selection) - these were digital channels that were not mapped to the listing therefore they were ignored, but they are available for selection - mostly on my system they represent the digital mirroring of the analog channels, but they also include some channels (including two HD channels) not available on analog, plus the Music choice channels.
It appears the Windows Media Center can pick up many more digital channels the the Catalyst Media Center. Also (maybe this will change once ATI releases drivers for the 650) under Windows 7 64 bit you cannot scan for digital QAM channels - no channels are picked up.
Per your above posts, so to clarify ~ you were running with Windows 7's built in drivers for the TV tuner at first? (but you thought you had installed the 750's drivers). The tuner worked, but as you tested it, it had choppiness problems etc. IS that all correct?
So then you researched & found how to install the 750 drivers, you did so & things are improved; Is that correct?
I also am asking for clarification on the last paragraph. First had you not been using Vista before just CMC? Vista with the TV Pack installed found far more Clear QAM than CMC could/would.
~ Per the (maybe this will change once ATI releases drivers for the 650) have you seen anything posted that they will do this... Otherwise, given past history, unless enough of us Biotch to them, they have moved past it!
Also the second part of that sentence is unclear to me "under Windows 7 64 bit you cannot scan for digital QAM channels - no channels are picked up." Can you clarify this [Do you mean under W7 64bit installation using Media Center?] ; OR [do you mean under W7 64bit installation using CMC?]
If it's under W7 64bit OS Media center ...why can't you scan for or find Clear QAM?
... I believe (doing an upgrade from Vista 64 to Windows 7 64) that Windows 7 picked up the old drivers from the ATI install under Vista.
...The Windows Media Center (Win 7) can add additional channels not found in the guide by doing a scan for additional channels, but it did not show these channels because it was not in the guide listings. I had to manually add these channels by selecting them under the guide edit.
"...the "official" Windows 7 drivers for this card has not been released..."