are you comfortable playing with that level? that's the most important thing. i'm assuming that you have optimized your settings, and if that is the case and it still results in your getting 50fps max, then your gameplay would greatly benefit from an upgrade my friend.
u're one of the best players i've ever seen spyyyy. don't worry about them. hv a chance to play with good players, but they're not aware of it. btw ur system is very good, keep going bro