Model Identifier: A1419. Mid 2017 A1419 models (different board architecture). GPU: AMD Radeon R9 M380 (2GB GDDR5). iMac 27 A1419 2015 Logic Board i7 4.0GHz R9 M390 2GB 820-00292-A 32GB SSD. Apple iMac 27" A1419 2015 Logic Board 820-0134-A R9 M395X 4GB GPU – No CPU.
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