A:Answer the card that comes with this PC is a GTX 1060 3 GB, its good enough for majority of user needs but is severely limited by its VRAM being only 3GB, I agree you should upgrade, I recommend a GTX 1060 6GB or GTX 1070 8GB, I dont see a need for bleeding edge 1080's, dual carding, or more extreme cards like titans, I do NOT recommend getting anything made by AMD who is the competitor of GTX/NVIDIA, most games are optimized for NVIDIA and AMDs are unstable and crash often.
IMPORTANT: I DO NOT recommend upgrading your graphics card right now, right now prices for graphics cards are still high but next month NVIDIA is releasing the 1100 and 2000 series of graphics cards making current gen 1000 series previous gen and dropping their current price substantially, you can also pick up a graphics card used off of ebay next month when everyones selling their 1000 series in favor of the new cards, used graphics cards are not a shot in the dark as they are the highest quality component in a PC next to the CPU, another thing to consider is that people who sell a good card to buy bleeding edge usually means the GPU wasnt overworked cuz the other components are also bleeding edge and also not very old
