Apple iMac 27-inch (Core i5) Review | Digital Trends
iMac 27" 2010 A1312 Core i7 2.93GHz 8GB RAM 2TB HDD Radeon HD 5750M High Sierra | eBay
Incase anyone ever needs the answer…I have a 27” 2010 iMac working in Target Display Mode with a M1 MacBook Pro using a miniDP to USB C adaptor that's capable of 4k60Hz.
Apple iMac 21.5-inch 3.2GHz Core i3 (Mid 2010) MC509LL/A | mac of all trades
Apple iMac 21.5-inch Mid 2010 3.06GHz Intel Core i3 (MC508LL/A) – UNICOM, Inc.