Memory Upgrades |
December, 05, 2002 4:12 AM |
cschmidt |
After battling with one or possibly 2 bad Simms in my PM7300, I have decided to upgrade my ram to some of the OWC 128 MB Simms for this Mac. I see some posts about not Interleaving the Simms. I understand that, but doesn't it make a difference due to Motherboard design to keep them interleaved? If I don't interleave...If I have 4 new 128 MB simms and 4 known good 64 MB simms, how should I populate the slots in the Mother board? Chris |
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RE: Memory Upgrades |
December, 09, 2002 11:28 AM |
Tony.Scaminaci |
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You might want to run the memtest utility that I posted to my web page if you continue to have freezes. It's at http://www.appleisp.com/~frisky. |
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RE: Memory Upgrades |
December, 09, 2002 5:01 AM |
cschmidt |
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Well... Some of the questions are solved. Looks like I may have had a bad Dimm slot on my mother board. I recieved Friday my new 128MB dimms from OWC. I yanked everything out and installed the new Ram. Booted..and the machine couldn't find one of the dimms.......mutter mutter... Moved things around and Bingo! got all 512MB Saturday Morning I broke out my spare 7300 and swapped out the motherboards. This one that I got off of E-Bay was a little used machine that barely had ever been opened up. So......It's working but I'm still having a few random stalls.... |
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RE: Memory Upgrades |
December, 05, 2002 6:41 AM |
nick.ashton |
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Memory will only be interleaved if identical DIMMs occupy the corresponding A and B slots. So if you put all your 128Mb DIMMs in A1 thru A4 and all the 64Mb DIMMs in B1 thru B4 then there will be no interleaving. Each A-B pair will contain one 128 and one 64. To interleave them put the 128's in (say) A1, B1, A2, B2 You might need to think about whether to use FPM or EDO DIMMs. My 8600, although it will supposedly tolerate EDO DIMMs, it doesn't seem to like them so when I upgraded thru OWC I ordered the FPM components. However, your mileage may vary. |