Well, I remember running running UDK on a MacBook Pro Early 2008 with 8600M GT back in the days. It didn’t take long before I fried the chipset due to running UDK on that laptop. These days I use a 460 GTX on my home PC and a 750 Ti and a 1050 Ti at work. The 750 Ti is not that bad for a standard 1080p output but it cannot handle my QHD monitor. 1050 Ti is fine though. When I run the engine at home with 460 GTX, I’ll get a very very bad frame-rate despite the fact that my system is very powerful. A 7820x CPU with 16 threads, 32 GB of memory running at 3200 MHz, and a Samsung 960 Pro NVMe2 as storage. The VGA kills the PC for my Unreal Engine development. My work PC with a 6600K CPU (8 threads), 32 GB memory and a regular slow SSD runs the editor smoother than the home PC due to the 1050 Ti card. This has brought me to my knees so I had to throw some budget at it. I cannot even imagine a 8600 to run UE4 editor.