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.
Fastest official FSB on that MB is 133/533 mhz so a 3.06GHZ Northwood would be the fastest CPU you could put in there.. but those are hard to find and expensive.. Cheaper to buy a new motherboard and a faster CPU. There are some faster Prescotts that use a 533mhz FSB, but I doubt they would work in that MB.