hii , this is my first query and ya dont have much knowledge abt gpu . m looking for gtx 770 gpu , and cant decide which one will be the best , among zotac , asus and gigabyte . my current configuration is mobo- gigabyte b85m-d3h , cpu - core i5 4670 (no overclocking) , 4gb ram . please suggest me the gpu , m not looking for overclocking also i am not looking for sli , suggest me a good psu . thank u all .