So my budget is around $600-$1000 and I'm looking to have the best computer I can possibly have graphics wise as well as performance for multi-tasking. I think reasonably I'm looking at a motherboard that supports at least 16 gb of RAM but only want to start off with 4 or 8 to save on money. I play a lot of online games so I need a solid graphics card. There is so much out there that I'm not sure what to pick and what is good anymore, but I can build the computer given all the parts. Is crossfire necessary or is just 1 graphics card sufficient? Any help would be much appreciated, thanks.