http://h20564.www2.hp.com/hpsc/doc/public/display?docId=c03344358
this is my pc
UserBenchmarks: Game 47%, Desk 75%, Work 52%
CPU: Intel Core i7-3770K - 80.3%
GPU: AMD HD 7950 - 44.1%
SSD: Samsung 850 Evo 250GB - 96.7%
HDD: Hitachi HDS723020BLA642 2TB - 76.4%
RAM: Samsung M378B5773DH0-CH9 0443 RMR1870EC58E9F1333 M378B5773DH0-CH9 0443 RMR1870EC58E9F1333 12GB - 49.6%
MBD: HP h9-1101ee
12 gb ram: 2*2gb+2*4gb
i was thinking of uprgading it. i want to upgrade to a new vga gtx 1070. i was thinking also to upgrade my ram but since ddr4 is for the same price of ddr3 i am thinking now of upgrading motherboard to take ddr4, but i dont need a new cpu since it is good. i dont want to pay extra 400$or 300$ on cpu that i dont need. what is the best solution for me ?