Hello Andrew,
Well yes it does... you probably see about a 8-10% performance improvement over 32bit on the same processor. This will improve over time as the 64bit code base improves and expands.
8-10% is not a small number, but never the less hardly noticeable by the average user, is it?
Any particular area where these speed improvements show in the MD? I am currently running 1080p on via ATI 2600XT to a NEC PG 6 (I know, there are better resolutions for the beamer), and I see heavy tearing. The tearing slightly improves if I change deinterlacing from best to something less CPU intensive. The CPU is something like a 4400 x2 AMD. Is this a problem of the ATI driver in general, or a problem with not enough CPU power?
rgds
Oliver