+1 on this. Any teardowns of a SSD-only 5K iMac yet?

How are the temperature sensing and fan speeds affected by a swap? In the future if I install an SSD I wouldn't want the fans going full speed.

any idea what socket type it is? (judging by what's available on newegg, i'd say it's probably socket P)

that info could be useful to anyone who might want to upgrade to the nehalem/calpella chips this summer.