Re: GTX/GTS 460 For BD
I assume you mean the GTS 450 and GTX 460. They are both fine for BD playback. For a 460 you might need to be concerned about power consumption. A 450 only needs one 6-pin PEG connector while the 460 requires two. Both are significantly faster than the 7800. I think there are ways around HDCP, but it requires using another program than PowerDVD (AnyDVDHD I think). I believe cards around the era of the 7800 were pretty flaky about HDCP even if some claimed they supported it, I suspect because the technology was very new at the time. A DVI connection also should work fine for playing HDCP content.