Question Which GPU should I buy?


Aug 16, 2019
Hello i got a low spec pc in the cornor of my room that i havent used in like 2-3 years so i tought hmm what if i upgrade it and make it to a Guest gaming pc So i think of buying a better graphic card and cpu so now heres the question wich gpu should i buy i thinking of these cards gtx 780/gtx 970/rx 480/rx 570 or gtx 770 so these 5 ones the two i am interesting in is rx 480 and gtx 970 and im going to upgrade to an i7-2600k heres the specs in it now btw

Cpu: i3- idk wich but i know its an 2000 series i3
Gpu: Zotac gtx 650 ti 2gb
Motherboard: Asrock Z68 Extreme3 gen3
Ram: Corsair vengeance pro 2x8gb DDR3-1866Mhz
HDD: Western digital blue 1TB 5400RPM
I know i will buy an ssd a 240gb maybe idk
Psu: OCZ ModxStream Pro 600W 80+ i will change the psu to since its very old