i know i can't use the same ram , i will be changing the whole motherboard with ddr4 rams and the gtx 1660super the only old thing would be the cpu , that's why i asked about the bottleneck , and the reason i'm upgrading to 7700 is the budget, can't upgrade to higher , and i heard it's perfect match with the gpu and everything in my new upgraded pc , thanks for replying , it was great help , so you see that i don't change the cpu? wouldn't it make difference ?