You'll be fine with your OS on a small SSD and BF3 on your HDD. I've got my system set up that way and I'm always on the server before everyone else - I'm using a 1.5TB seagate drive which is a couple of years old.
You better get posting then, thankfully I was a member before the rule change.

You'll be fine with your OS on a small SSD and BF3 on your HDD. I've got my system set up that way and I'm always on the server before everyone else - I'm using a 1.5TB seagate drive which is a couple of years old.

sorry silly mistake, i'll download and give them a go and report back.

Just got my Corsair 120Gb LS today, incredible upgrade!
