iMac Pro Updated With 256GB RAM and Radeon Pro Vega 64X Graphics Options - MacRumors
Amazon.com: OWC 256GB (2 x 128GB) PC23400 DDR4 ECC-R 2933MHz LRDIMMs Memory Compatible with Mac Pro 2019 and up Models (OWC29D4LR0256) : Everything Else
iMac Pro (2017) 256GB RAM VESA Mount w/ AppleCare until March 2022 for Sale in Los Angeles, CA - OfferUp
Apple 24" iMac All-in-One Desktop | Apple M1 - 8GB RAM - Apple M1 8-Core - 256GB SSD in Blue | NFM
256GB Memory Upgrade Kit for 2017 Apple iMac Pro
Upgrading an iMac Pro to 256GB of RAM Only Possible at Time of Purchase [Updated] - MacRumors
Computers & Electronics :: Refurbished Desktop Computers :: Apple Desktops :: iMac Pro :: 27-inch iMac Pro 2.3GHz 18-core - 256GB RAM - 1TB SSD Intel Xeon W with Retina 5K display