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.
2900 works fine in the Sg01. I even have an E8400 in there overclocked to 4.2ghz on the NT06 fanless with only the PSU exhausting heat. My room is super hot to. So yea, the card will not only fit in the SG01 you wont have to remove the hard drive cage.
The fit in my SG01 between my CD/DVD rom and my psu is very tight, I was wondering if there was a dvd/cd rom combo drive that was shorter than an average drive I could use in my case.