> From: bill parker <[EMAIL PROTECTED]> I have been doing a throw out of old > computers and salvaged bits from some old 7200 machines. > > Thus I have the RAM from a 7200/90. Will this be compatible with the > 7220/200? Both machines built in 1995.
Be careful! I've fried some DIMMs in the past getting caught with this scenario. The RAM the 7200//90 uses are 5v 168 pin FPM DIMMS (70ns) while the 7220/200 uses 168 pin 3.3 Volt EDO DIMMs (60ns). So basically they are pin compatible but not voltage compatible - Very bad design if you ask me. Make sure you DON'T put the EDO RAM from the 7220 in the 7200 as this could fry the motherboard. I don't know whether putting the FPM DIMMS from the 7200 into the 7220 would damage the logic board or the DIMM, but mixing 5v and 3v DIMMs doesn't sound like a good idea to me! Keith or someone should be able to give more details and make sure my info is correct. Ciao! -Mart
