I noticed a spec on Microsoft's site that quotes 128-bit 10GB/sec memory as a minimum for HDTV playback using the htpc's graphics card. Note: I you are only intending to play standard def DVD's, then don't worry too much abotu this Here's a list of the few cards that with that criteria could potentially sensibly be considered for smooth HDTV playback: GeForce 6800 and higher (MCE Certified). GeForce 6600 GT and higher (MCE Certified). GeForce FX 5900 XT and higher (MCE Certified). GeForce FX 5800 and higher. GeForce FX 5700 Ultra (MCE Certified). GeForce FX 5600 Ultra. Parhelia and higher. Radeon X600 XT (MCE Certified). Radeon 9700 and higher. Radeon 9800 and higher (MCE Certified). Almost: 9.6GB/sec:- Radeon 9600 Pro Radeon 9600 XT Radeon X600 Pro Ref: http://www.microsoft.com/windowsxp/using/mce/expert/hdtv.mspx Ref: http://www.pcvsconsole.com/features/video/ [Edit: Added Windows Media Center 2005 certified note Ref: http://www.microsoft.com/windowsxp/mediacenter/partners/dfw/partnerlisting.mspx] Anyone getting rock solid smooth playback of 1080i/60 material using anything less? I just went from a Radeon 9500 (8.64GB/sec) to a 9700 Pro (19.84GB/sec) and saw a big improvement to smoothness, although I still get combing on poor quality 1080i captures where cadence is dropped. regards, Rob.