We understand that…you mentioned it in the first post.
What we're trying to tell you is…Apple computers are not like Windows computers. They are very non-upgradeable (in many cases). Especially when it comes to iMac's and CPU's. Yes the CPU on this 2010 27" iMac is socketed. And yes the iMac can be opened up to get access to the CPU. But not just any CPU with the proper number of pins will work with an iMac.
This sort of CPU upgrade on an iMac is done very very very rarely (maybe I should have added a couple more "very's").
Before making plans to upgrade the CPU…do some extensive internet searches to find out (if possible) what CPU's are compatible. Don't assume that ALL [FONT=Helvetica, sans-serif]
FCLGA 1156 CPU's will work.[/FONT]
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I have not done this on an iMac…but I have done it on some other Apple computers. Sometimes official or unofficial (non-reversable) firmware updates need to be applied to get the new CPU to work. Or maybe an enthusiast written "hack" needs to be used…etc. Depending on what needs to be done…the iMac (with the CPU upgrade)…may or may not act 100% like Apple intended. For example you may or may not get a boot screen…or other anomalies. Or the "different" CPU may cause kernel panics.
What I'm trying to say is. If you purchase this iMac…with the intention of upgrading the CPU…DEFINITELY do your research ahead of time to see what others have done (if you can find any info). This may end up being an experiment (with no other info available).
In an earlier post you mentioned wanting to use an i7-890 CPU for the upgrade. Within the various 27" iMac models released in 2010…there was one model with an i7 CPU. And it had an i7-870 2.93ghz quad-core CPU. So if you intend on upgrading the CPU…from a "best" compatibility standpoint…using the exact same CPU as Apple used (i7-870 2.93ghz CPU) would probably be a good idea.
- Nick[/FONT]