I currently have a MSI Z390 A-Pro Motherboard with i5 8400 with 32 GB Optane. Graphics card is the NVIDIA GeForce GTX 1060 6GB. However, I currently have 8GB for memory (HyperX FURY DDR4-2666 (2x4GB)). This is my first gaming PC and I will use it to stream online, I'm pretty new and don't have much knowledge in building PC's so if you'd like to explain, I would not mind at all. I've looked around on forums and some say that 8400 can hold up to 64 GB RAM but it also depends on your processor. I just wanted to know what would be best in my case. I was leaning for 32 GB.