Some users have recently had their accounts hijacked. It seems that the now defunct EVGA forums might have compromised your password there and seems many are using the same PW here. We would suggest you UPDATE YOUR PASSWORD and TURN ON 2FA for your account here to further secure it. None of the compromised accounts had 2FA turned on.
Once you have enabled 2FA, your account will be updated soon to show a badge, letting other members know that you use 2FA to protect your account. This should be beneficial for everyone that uses FSFT.
are you planning on heavy Overclocking?... if yes then i7 5930K. if not then i7 6700K. the 5930K will offer way better multi-threading performance but also will offer lower gaming performance if you don't overclock it to 4.2ghz+ than the 6700K.