It's Blue, but so am I — #19 Hi Nick - how goes it Just to confirm: - iMac slot-loading 350 - 500Mhz (ceramic CPU) have interchangable logic boards - iMac slot-loading 500Mhz - 700Mhz (IBM 750CXE G3) aka… 68kMLA Hardware by Byrd Mon, 10 Aug 2009 - 07:57