my new SFF case has a removable 2.5" drive that connects via a USB port. i have an intel 80gb g2 SSD and a 7200rpm western digital 2.5" HDD. i assume the SSD would be very limited in some way if i put it in there. would i be ok putting the HDD in there with Steam and other apps or would that be pretty slow too? i can fit them in the case somewhere too, just not sure where yet and wondering about the performance hit. so in what way (read? write? something else?) would both these drives be limited and to what degree? thanks!