I thought I was getting a quad core 9020 MT. I think I got a duo core. It probably won't run Ark. I messed up on the BIOS. I checked the Amd GPU for my main graphics. Then I got black screen on monitor. I took the GPU out to reset the BIOS which was hard and I put it back in. When I plug in the PC it powers up. Power button is orange and it starts blinking. 2,3 blink code which means something is wrong with memory. I can't get it to work. If you buy an Optiplex do not take it apart. PS-I didn't notice the display port on the Amd card. I might not have had to try to reset it to get picture to change BIOS back to Intel 4600. I should have plugged in the cord to the Amd's display port.