My MB can't go past an EE 955 or 965 EE so I can't go to a Core Duo or anything like that. I am using 32-bit Vista Ultimate with 4GB of RAM and an ATI 4670 card, primarily for watching SageTV. The board has a 975X chipset. My question is would I notice much of an improvement jumping within the 900 series going from a 3.2GHz 800MHz FSB to the 3.46 or 3.73GHz 1066 FSB? Particularly for using DirectShow filters for decoding H.264 video. I need to prolong this computer as long as I can, and I can't adequately overclock my current CPU, so that is out as well. Any opinions would be appreciated, especially from anyone who has actually tried that sort of jump. Thanks.