How well does Windows 7 MCE assistance Clear QAM?

Just how well does Windows 7 MCE assistance ClearQAM (no - cablecard, no HD), and also exist any kind of standards for which capture cards function best with it?

Additionally, I have an old laptop computer with a 2 Ghz Pentium M with 1 GB of RAM. I think that this will certainly have the ability to take care of 1 stream (as it presently performs with non - QAM web content under XP MCE. Would certainly it additionally have the ability to take care of 2 streams?