Any upgrades are done at the discretion of the user and are performed at your own risk. Whether you want iPhone and Mac tips or the latest enterprise-specific Apple news, we've got you covered. Delivered Tuesdays. Watch Now. Apple Weekly Newsletter Whether you want iPhone and Mac tips or the latest enterprise-specific Apple news, we've got you covered.
Delivered Tuesdays Sign up today. Editor's Picks. Linux kernel 5. Windows Do these 11 things immediately. Top 5 things to do about your tech before you die. After Mojave installation, your colours will be inverted. Cancel: I did not complete this guide. Badges: Ok a word of caution about doing this. I installed an i7 in my 27" i3 iMac and the system works, it reports the correct stats for the i7 but the cpu fan runs at high speed from boot.
I've researched a number of forums and found no way to resolve this, I also know there are a number of people with the same problem. So either I screwed up my logic board or it just doesn't like the i7 processor. It's the correct processor that people have used the i7 I'm at a loss and don't want to pull it out because it just runs so much faster for video editing but using the machine as an audio workstation is now impossible because of the noise from the fan.
Also be extremely careful with the LCD screen. If you think gloves will solve this you are wrong. DO NOT touch the lcd and be extremely careful with the connectors. If anyone has any ideas about the fan speed fix please let me know! I also use smcFanControl to monitor and control the other fans in the system.
As with any modification, your mileage may vary. This is a "Medium" difficulty mod and not recommended for novices to the hobby. I experienced none of the issues your have experienced. I upgraded to Mountain Lion If you do the CPU replacement and afterwards the optical drive fan and cpu fan are running at max speed very loud then you more than likely didn't plug in the CPU temp sensor.
The guide here doesn't talk about it so you can easily forget it! The connector is on the other side of the board, which is different from all the other temperature connectors and not on the same side as the heatsink screws either. I did this and the computer ran with noisy fans. I used a fan control app to quiet it down, but it was still loud on startup until login.
More importantly, the performance without the CPU temp sensor connected was terrible. It was slower than the original i5 CPU. HD videos would stutter and benchmarks gave very low scores. Fix Your Stuff Community Store. Difficulty Moderate. Steps 8. Time Required 30 minutes - 1 hour. Sections 1. Note that there is not much of a performance difference between quad-core i5s and i7s. Feb 2, AM. Technically, Apple says no, it is not user upgradeable.
You will find web sites of people who have done it, but it is far, far from a trivial task to disassemble an iMac to get to the socket, and then re-assemble the whole machine. If not highly technicaly savvy in tearing down integrated circuit electronics, the chance of you messing it up is pretty high.
And I'm not at all sure that the logic board would support the i7 - it might, but you'd need to check that out. Page content loaded. It says the processor is in a socket, implying not soldered. The problems like voiding warranty and risk of breaking lots of other stuff in the process make the answer a "no" for all but the very adventuresome.
IOW, you can't do it in an Apple-sanctioned way. Question: Q: is it possible to upgrade cpu in iMac from mid ?
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