Upgrading RAM On The New 27-inch iMac Is Easy, Here's How | Cult of Mac
OWC - 32GB Memory Upgrade Kit - 2 x 16GB PC19200 DDR4 2400MHz SO-DIMMs für Mac Mini , 27" und 21,5" iMac , und kompatible PCs: Amazon.de: Computer & Zubehör
Can you upgrade the RAM in the 27-inch iMac? | iMore
hardware - Can I add different size RAMs to iMac 5K? - Ask Different