High-performance iMac 27-inch, Core i9, 40GB memory. - Model: iMac (Retina 5K, 27-inch, 2020) - Processor: 3.6 GHz 10-Core Intel Core i9 - Memory: 40 GB 2667 MHz DDR4 - Graphics: AMD Radeon Pro 5700 XT 16 GB - Storage: 1TB Flash Storage Thank you for viewing. The memory was upgraded at the time of purchase. Original box included. Since it's an Intel iMac, you can install Windows via Boot Camp. If not purchased by the end of this year, I will take it to a買取店 (resale shop).