Hello l, I have a ryzen 2600, 32gb ddr4 ram and a aurous 1060 6gb, 750w power supply, I've been looking for an upgrade for my graphics card for some time and I've been offered two titan xs (maxwell) 12gb cards the guy wants 500 quid for them and just wondering if it's worth it or not ? Wanna start getting into 4k gaming, thanks for any help