Apple iMac (27-inch, 2017) review: Apple doesn't mess with success - CNET
How to upgrade RAM in the (Mid 2017) 5K iMac and save up to ~$900 [Video] - 9to5Mac
Apple iMac with Retina 5K Display (2017) review | Digital Trends
Apple iMac Retina 5K 27 Inch 2017 Intel i5 16GB Ram 1TB NVME SSD Radeon Pro 575 GPU for Sale in Falls Church, VA - OfferUp
OWC Confirms 64GB of RAM in Apple 27" iMac 2017
Apple iMac (27-inch, 2017) review: Apple doesn't mess with success - CNET
Configure your own 27-inch Apple iMac (2017) at OWC
Amazon.com: OWC 32GB (2 x 16GB) PC19200 DDR4 2400MHz SO-DIMMs Memory Compatible with Mac Mini (Late 2018), 27" and 21.5" iMac (Mid 2017), and Compatible PCs (OWC2400DDR4S32P) : Everything Else
Used Apple iMac 27-inch (Retina 5K) 3.8GHZ Quad Core i5 (Mid 2017) MNED2LL/A - GainSaver