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.
Real answer: depends on what you're using it for. There isn't just "fast", there's fast for any number of applications. And they're not linked, that's right out. Tom's does good research on that stuff. http://www.tomshardware.com/storage/index.html
Or you could check the storage review performance database. Seems like a good place to start at least, and probably as much info as you're ever likely to need. They have a really good review on the current generation of 250's all head to head too.