whats the best intel cpu for my HP Pro 3400 - Core i7 2600 3.4 GHz - 8 GB , it is up-gradable but im lost on the bridge and socket stuff. i have an Antech 650 power supply and use a nvidia gtx 660 2g card but might up to a gtx 970 later on. i mainly play arma 3 and just want to run it as high as possible.