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I have more RAM than you do

Unknown_K

Well-known member
I use the chipmunk site to figure out the MB of the SIMM/DIMM. For 72 pin RAM I use an old Pentium desktop system and install them in pairs to find out the size and if they are EDO or FPM (BIOS tells me on boot). The bios will do a simple test on boot to check the RAM, there are plenty of memory testers for DOS that boot from a floppy if you have some flacky RAM to test.

30 pin SIMMs are easy to sort out just by the writings on the chip.

In general anything I test gets a little sticker on it with capacity and type so I don't have to test it again. I do the same with hard drives (boot with the seatools cd and scan each sector), put a sticker with a date I tested and size.

 
I have all my RAM sorted into static bags. For example there is one bag for all 4 MB 72-pin SIMMs. For SIMMs I don't care about EDO or FPM or Parity since the Macs don't either.

DIMMs are sorted by voltage. 5v EDO, 5v FPM, 5v Unknown. 3.3v 8 MB, 3.3v 16 MB, etc. 3.3v is what you would call PC66, PC100, etc. 5v is the older stuff for pre-G3 Macs. 5500/6500s need EDO, 7200s will fry if they have EDO, the rest don't seem to care.

To determine if a 5v is EDO I put it in a 5500 and if it screws up then it's probably FPM.

I use a label maker to write the size and type on the modules whenever I am dealing with any of those modules.

 

MrMacPlus

Well-known member
Bah. I want to use my 256 kB SIPPs and SIMMs in new systems. ;)
I actually have an old ISA capture card that has SIPPs soldered on with space for a dozen more, so if you don't lihe them let me know.
Sorry to revive my older thread, but so do I. It's upgrading my Vectra's crappy 256k of on board RAM.

 
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