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.
Anything in the BIOS labeled as C1E, C2/C2E, C4/C4E or EIST needs to be disabled. But if the downclocking isn't causing a problem there's no reason to disable it. Your CPU will idle cooler and use less energy.
It clocks up instantly... even on the smallest of loads... you open a program and you'll see it jump back up to normal speed, then once you're idle it'll drop back down...
It's a nice feature if your overclock is stable...