On Jan 10, 2012, at 6:23 PM, John Carmonne wrote: > > On Jan 10, 2012, at 6:00 PM, Jim Scott wrote: > >> >> On Jan 10, 2012, at 8:03 AM, JOHN CARMONNE wrote: >> >>> I read on Everymac that the processors in the white iMacs are swappable. I >>> have a iMac 20" 2.0 Core Duo and would like to put in a 2.16 Core 2 Duo. >>> Has any one done this? >>> >>> John Carmonne >>> Yorba Linda CA 92886 >>> From iMac Core Duo 2.0 >> >> Yes, I've upgraded a Core Duo processor in a white iSight iMac to a Core 2 >> Duo processor. The processor fits into a socket and is thus removable. >> That's the good news. The bad news is that you have to disassemble the iMac >> to remove the logic board so you can get at the screws that clamp the heat >> sink over the processor. It's an almost complete disassembly, so you would >> be well advised to obtain an Apple service manual for the iMac in question. >> >> Don't forget to use fresh thermal paste -- I like Arctic Silver. >> >> If you're planning to do this so you can run OS X 10.7 Lion, you need to >> understand that the Lion installer doesn't care a whit about what processor >> you've installed. It looks for the Model Identifier in About This Mac >> (iMac8,1, for example) and compares the one it finds with the list of models >> on which Lion can be installed. So even if your upgraded now-Core 2 Duo iMac >> otherwise runs perfectly, the Lion installer will not install directly and >> will give you the old white circle with a slash screen to show its >> displeasure. >> >> However, there is a workaround to get Lion up and running on >> Lion-incompatible Intel Macs with Lion-compatible Core 2 Duo processor >> upgrades. Here's a detailed explanation of how to do it I wrote last August >> to explain how I did it to some clients who wanted me to upgrade their iMac >> and their Mac Mini from Core Duo to Core 2 Duo. >> >> Here's the process. Keep in mind this was written in the very first days of >> Lion, so you may already have a USB Lion thumb driver installer, and thus >> can skip to Step 8: > > > > Thank you Jim for the details in line 9 and 10 they are very important to > know. I've been using the thumb drives but haven't run into this issue yet so > this will save me a lot of hair pulling. > My main reason for the original question was if there was any other pitfalls > on the MOBO between the models other than the sockets being the same. Now > would any know where I gat get a Core 2 Duo 2.16 processor besides pulling > one from a machine?
You're welcome, John. Sorry about the repeat of a good chunk of the text in my original post. I've got a Magic Trackpad next to my shortie bluetooth Apple keyboard, and for some reason that causes very strange things to happen to my e-mail text from time to time. Usually I catch it, but this time I didn't. Doesn't happen when I'm using a word processor, only with e-mail. Go figure. There are no other pitfalls to be encountered, other than the usual disassembly/assembly stuff that has to be done just so to avoid "problems." Once you get to the bare cpu, all you have to do is insert a tiny flat blade screwdriver into the slot, turn it 180 degrees, and the cpu is loose and ready to be lifted out. Lots nicer than the old lift-the-lever sockets of olden dayes. I bought my Core 2 Duo cpus on eBay for quite reasonable prices, so there's no need to buy a complete Mac and strip it. Just make sure that the cpu you're buying is compatible with the socket. A 2.16 Core 2 Duo mobile chip should be a perfect, worry-free choice. Have fun! Jim -- You received this message because you are a member of the iMac Group, a group for those using Apple iMacs and eMacs. The list FAQ is at http://lowendmac.com/imac/list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to imaclist@googlegroups.com To leave this group, send email to imaclist+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/imaclist
