Jan 2018 some updates 2020 pulled from working systems unless noted. One entry equals one motherboard, so I have duplicate entries. see http://www.retrotechnology.com/herbs_stuff/mac.html for details G4 and a few G3 motherboards with CPU (no heatsinks) -------------------------------- G3 grey, 350MHz, rev 1 820-0987A G3 grey, 350MHz, rev 1 820-0987-A G4 400MHz AGP, 820-1093-A with CPU 820-1040A G4 dual 450MHz gigabit, 820-1153-A with dual CPU G4 400MHz gigabit, 820-1153-A with CPU G4 667MHz, 820-1173-A with CPU G4 dual 533MHz, 820-1173-A with dual CPU G4 533MHz, 820-1173-A with CPU G4 533MHz, 820-1153-A with CPU 820-1175A G4 400MHz sawtooth, 820-1094-A w CPU PowerPC processor motherboards ------------------ 820-0564-09 8500/120 "TNT" 820-0955-A 7100/65 820-0762-B 7200/120 820-0583-A 7200/75 820-0583-A 7200/90 (times two) 92-=0752-A 7600/120 820-0858-B 7300/180 (times two) 820-0752-A 7500/100 PowerPC processor CPU boards ------------------ 630-1733-A 8500/120 (times two) 630-2503-A 9600/233 "for 9600 only" OUT 630-1351-A 8500/120 (times three) 630-2390-A ??? "for 9600 only" OUT 630-1735-A 9500/132 see Web site for NewerTech CPU boards, accelerators http://www.retrotechnology.com/herbs_stuff/m_imac.html#accel 68040 processor --------------- confirmed 12/2014 820-0331-A Quadra 950 68?040 - board has component damage to SIMM sockets and one crystal socket Y2 820-0380-A Centris 650 68040 25MHz socketed 820-0380-A Quadra 800 68040 33MHz socketed 820-0453-03 Quadra 660 AV 68040/25 socketed 820-0377-A Centris/Quadra 610 68040/25 socketed 820-0377-A Centris/Quadra 610 68040/25 socketed 820-0377-A Centris/Quadra 610 68LC040/20 socketed 820-0377-A Centris/Quadra 610 68LC040/20 socketed 820-0377-A Centris/Quadra 610 68LC040/20 socketed not confirmed 820-0548_B Performa 636 68LC040/33 socketed 820-0548_B Performa 636 68LC040/33 socketed 820-0380-04 Quadra 800 68040 socketed 820-0382-A Quadra 840 AV - OUT none in stock 820-0453-03 Quadra 660 no proc 68030 (and earlier processors) motherboards ------------------ Mac Plus Mac SE (very few FDHD aka Superdrive) Mac 512K or 512KE Others are mostly in systems.