I have an intel core i7 2600, gtx 550 ti, 2x 4gb ram on an intel H61MA-D2V powered by a 500W psu. I'd like to upgrade my gpu to a 1060 3gb. Right now I am playing Witcher 3 and it's a reason for my upgrade. I don't play a lot of triple a games but around 3 a year and I'm wondering will upgrading only my gpu will be enough or do I have to upgrade something else aswell.