[archer75]

Or is it soldered on the board? If you can replace it, will the motherboard in the imac, the core duo model, support a core2duo processor?

[macintologist]

Yes it is upgradeable. You can buy a Core 2 Duo chip from newegg.com and install it.

I'd wait however for the next gen after that. They will probably still release a 677mhz bus variant.

[archer75]

is it socket 479(merom) or socket 775(conroe)?

[macintologist]

Google around a bit for more specific info, but I've read it before and know for a fact that you can stick a Merom in the iMac.