iMac RAM upgrade: Here's an affordable way to improve multitasking - CNET
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
How to Upgrade iMac RAM: 2012-2022: EveryMac.com
Install memory in an iMac - Apple Support (IN)
hardware - Installing 2 x 16Gb and 2 x 32Gb on an iMac 27" - Ask Different
iMac Ram Upgrade: Upgrade the Ram of Apple iMac mid 2011 to 32GB - YouTube