2011 imac 27" 32GB - final stage of 1TB + 2TB SSD upgrade (replaced HDD & optic drive). Also cleaned out the fans and case. Running 'SSD Fan Control' & 'Macs Fan
Upgrading an older iMac's PCIe SSD: Third-party solutions that save you beaucoup bucks | Macworld
What's the best SSD drive for a Mac and how do I install it? - Macintosh How To