Macdrone
Well-known member
My original 638CD has been a great machine since 93 and been everywhere and back again. I figured I would show it some love.
First did the 40 mhz upgrade shown here.. http://lowendmac.com/2014/overclocking-the-mac-quadra-series/
Put in a real 40 mhz full fpu cpu with heat sink, put a heat sink on the video chip as suggested.
Put in a 2 gig hard disk.
Replaced the 300i with a 600i to keep it good and bootable.
Added a comm slot ethernet.
Loading original software now.
Its a 2 ram slot board. FYI when they silk screened one slot 32 meg and the other 16 meg (lower sizes also listed on same slot) they meant it here. I put in 2 32 meg simms, no boot chime no start. Had to put in exactly what it showed. 52 megs of ram is better than the 20 that I had in there.
First did the 40 mhz upgrade shown here.. http://lowendmac.com/2014/overclocking-the-mac-quadra-series/
Put in a real 40 mhz full fpu cpu with heat sink, put a heat sink on the video chip as suggested.
Put in a 2 gig hard disk.
Replaced the 300i with a 600i to keep it good and bootable.
Added a comm slot ethernet.
Loading original software now.
Its a 2 ram slot board. FYI when they silk screened one slot 32 meg and the other 16 meg (lower sizes also listed on same slot) they meant it here. I put in 2 32 meg simms, no boot chime no start. Had to put in exactly what it showed. 52 megs of ram is better than the 20 that I had in there.