Originally from England, now living in Texas, I've been fixing things for as long as I can remember, staring with mechanical clocks when I was very young.
Received my BSc. & MSc in Mathematics and Computer Science and began a career in Information Technology, specialising in server infrastructure architecture, design, documentation and deployment.
A self-confessed rabid Apple fanboy, I collect Macs, both old and new, and other Apple devices. I then upgrade them to the latest technology (within the limitations of the factory motherboard).
After 20 years of IT, including a stint working for Apple in the UK, I completely changed gears and started a high performance automotive business 11 years ago based on late model Corvettes, Camaros and AMG Mercedes.
Well, that's me. A bit of a hardcore geek and crazy gearhead. :o)
Please either contact me here on iFixit or via Twitter @EG_EnglandGreen. Thanks!
Don’t install Mojave or Catalina on this machine. It will barely run and the experience is terrible.
This quote is from DosDude1
“Radeon HD 5xxx and 6xxx series video cards are not, and most likely never will be, supported under Mojave or later.“
As I mentioned, I have no specific knowledge of the 21.5inch iMacs so I do not know what can and can not be upgraded with them. Sorry.
You should never have to do that. This processor upgrade does not make it a hackintosh - after the upgrade it is still a genuine Apple device and should update and install like any other Mac.
I used 4 x 8GB RAM sticks.
* From Mactracker “Maximum Memory 32 GB (Core i5 or Core i7 Actual) 16 GB (Apple)”
I used 4 x 8GB RAM sticks.
* From Mactracker “Maximum Memory 32 GB (Core i5 or Core i7 Actual) 16 GB (Apple)”
Someone asked me how I got 32GB of RAM in my 27” 2010 iMac. I used 4 x 8GB RAM sticks.
* From Mactracker “Maximum Memory 32 GB (Core i5 or Core i7 Actual) 16 GB (Apple)”
I wanted to address a few questions in one comment, rather than replying to each individually.
1> I have abandoned using Mojave 10.14 on this 2010 27” iMac. The slow GPU makes it unusable. I’m back to High Sierra 10.13 with APFS, 1TB internal SSD and 32Gb RAM. This appears to be my optimal configuration for this 2010 27” iMac
2> GPU upgrades. I looked into this and while I believe that there are some upgrades that will work (2011 27” iMac, other PC MXM GPU cards), the cost and complexity was not worth it for me. Between flashing the card, reflowing and heat sink packaging, I’m not going to attempt an upgrade.
3> 21” iMac. Unfortunately I have zero experience with these machines and their internals. I have several 27” iMacs of different vintages (2009, 2010, 2012 Slim, 2016 Retina 5k) but no 21” iMacs.
4> This is still a GREAT machine! Yes, it’s 9 years old now (about 55 years old in dog years) and it is approaching “Vintage” status, yet it still hangs with modern machines in terms of functionality and usability.
I have no idea. I successfully used the i7 870 and it has been running like a champ for over 5 years, now on High Sierra 10.13.3 - it has been flawless.
https://www.amazon.com/gp/product/B00698...
Komputerbay 16GB (2x 8GB) PC3-10600 10666 1333MHz SODIMM 204-Pin Laptop Memory 9-9-9-24 for PC only - not MAC
You 2 kits - 4 x 8Gb modules = 32Gb
It says “Not MAC” but 4 of these modules have been running like a champ for the past 6 years in my 2010 iMac with the i7 upgrade :)
Thanks! It’s been 5 years since I did the upgrade and I still use this iMac in anger every day!
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