Switched out the case to a Fractal Design S and i'm hoping it will be a less tighter fit as ive opted to just go for the regular DR3, going to up to a 2TB drive also. Cheers for the help
Thanks for the help Ross, i'll definitely go for a 2TB drive then instead. I didn't even think to look at the dimensions it never crossed my mind, thanks a lot mate.
I've been planning to buy a new PC for months now and have decided to buy all the parts individually and a family friend is going to build it for me. I've used pcpartpicker to list all the parts and have done a reasonable amount of research into each part in order to try fit under my £1000...