If you're building a new computer, consider getting an Intel-based P55 or X38 motherboard. These are capable of USB 3.0. Blackmagic now has a USB version of the Intensity Pro, called the Intensity Shuttle, but it requires USB 3.0. I've seen people in forums recommending getting a PCI-E USB 3.0 card for other motherboards, but this won't work with the Intensity Shuttle if it's not on a P55 or X38 motherboard.
Asil, I'll be using Premiere also. I hope you'll keep us posted on what you find. I'm very tempted to order a Blackmagic Intensity Pro to use in a two computer setup; both PCs are machines that I built, with dual core 3.0ghz CPUs.
As I'm sure you know, Fraps records as uncompressed AVI files, which are huge enough already. But when I read about PlayClaw and tried the demo, it states that it has multiple levels of on-the-fly compression, so if anything the files should be smaller. Filling up a whole 60gig drive does not sound right -- I use a 32 gig drive for capture, an it takes me about an hour or so before I fill it up. I'd say 30-50 gigs equals about 5-8 minutes or so of final video, depending on how much I use and how I edit it.
Oh, and as for using the same computer for capture -- that might work, but don't forget about the bottleneck of running SL and trying to stream gigs of data from the capture card over to the hard drive or wherever you are going to store the final files -- I would think that using a separate rig to do just the capture of the feed from your primary rig that is logged into SL would help.
I almost wonder if footage from playclaw might look better, considering the file size difference?? I wonder what it is that they are capturing that fraps is not...
I just built a new box, so I'm looking to buy a video capture card that will perform a similar function but with HDMI out and in. I've been considering the Blackmagic Intensity or AverMedia AVerTV CaptureHD or Hauppauge HD PVR or ...there was a fourth one I liked a lot and I've lost the link ...so, that is why I'm not committed yet!