Path: utzoo!mnetor!tmsoft!torsqnt!lethe!yunexus!ists!helios.physics.utoronto.ca!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!zaphod.mps.ohio-state.edu!rpi!uupsi!sunic!fuug!news.funet.fi!polaris.utu.fi!news From: rvirta@utu.fi (Risto Virtanen) Newsgroups: comp.sys.mac.hardware Subject: 8 vs 9 chip SIMMs Message-ID: <1991Feb8.134020.19096@polaris.utu.fi> Date: 8 Feb 91 13:40:20 GMT Sender: news@polaris.utu.fi Organization: Turku School of Economics Lines: 10 We have used 9 chip SIMMs for Mac upgrades - because they are cheaper- and have not found any complications. So I ask: should I expect any? As I understand Mac just ignores the 9th chip. Any comments from technically qualified people as I am not. I have upgraded dozens of Mac pluses though... Toughest part is disconnecting the cables from the logic board but I used a long screwdriver as a lever. I have also heard conflicting advice about checking the voltage: how much and from which pin?