well, my T7200 core 2 duo retail cpu just arrived this afternoon, and i spent the last 2 hours or so installing new parts in my core solo base model mini. installed the cpu, 2gb of memory, a UJ-845S superdrive, and a 7200rpm 100gb sata hard drive. not an easy upgrade. lots of really small wires and connectors to remove to get the drive/fan frame off. also needed to take the motherboard out of the base to remove the cpu heatsink. be VERY careful removing the heatsink, as the temp sensor is glued to the bottom of it! the cpu socket is just like any laptop socket, and can be 'opened' and 'closed' with a flat blade screwdriver. the core solo chip and the new core 2 have a really different looking silicon top, so needed to scrape the old compound off the heatsink as it would not have 'matched' the original pad install. used some artic silver 5 when i installed the heatsink. holding the heatsink steady and pushing in the mount pins was a bit of a trick! so. works! booted right up. no changes/firmware/anything other than removing and installing hardware. 'about' now showing '2Ghz Intel Core 2 CPU T7200'. and now shows 2 GB DDR2 SDRAM. sweet temps have been in the high 40's and low/mid 50's (C) so far. just running update, surfing, etc. going to wait a couple days for the artic silver to complete the thermal bond before running any real benchmarks. right away though... it's fast. really fast. makes using my dual 1.8 G5 seems slow for a 'how it feels' benchmark. and quiet. same as the core solo as far as noise, but will see when i start with the benchmarks. bootcamp and xp pro are next. will post pictures and benchmarks later. if anyone has benchmark ideas or requests, please let me know and i will try and add them to the list... peace.