iMac 27" A1419 Late 2015 Logic Board -2GB AMD Radeon R9 M380 GPU *NO C - Part Haven
AMD Radeon R9 M380 - NotebookCheck.net Tech
iMac Late 2015 5k 27 inch Logic Board 3.2GHz 4-Core i5 AMD Radeon R9 M380 2GB | eBay
R9 M380 Valorant benchmark with Intel Core i7-4790K @ 4.00GHz at Ultra Quality: 1080p, 1440p, Ultrawide, 4K Performance Benchmarks - GPUCheck United States / USA