Apple launches 24-inch M1 iMac in a rainbow of color choices with 7-core or 8-core GPU availability and two Thunderbolt ports onboard - NotebookCheck.net News
Apple iMac A1225 2007 ATI Radeon HD 2400 Video Card 128mb 109-b22531-10 for sale online | eBay
Newest iMacs have removable GPU, ambient light sensor | Ars Technica
Refurbished 24-inch iMac Apple M1 Chip with 8‑Core CPU and 8‑Core GPU, Gigabit Ethernet - Blue - Apple
New iMac 24" with Retina 4.5K Display - Apple M1 Chip 8-Core CPU, 8-Core GPU - 8GB Memory - 512GB SSD | Costco
Amazon.com: Original Graphics Video Card GPU Upgrade Replacement for Apple iMac 21.5 Inch Late 2011 Core i3 3.1 All-in-One Desktop PC MC978LL/A, AMD ATI Mobility Radeon HD 6750M, MXM VGA Board Repair