Thank you guys, hey w1ze1 I don't plan on putting windows on the 1tb drive lol, it's already on the 240GB drive, I have a 1tb HHD but I want a silent and fast SSD for games, I have some games on the smaller drive but it has 40GB of space left so I don't want to use it any more for games, I saw a Crucial MX300 SSD for £210 but it's probably gone now, I will wait until the new year when I get my Bonus as I will need a new power supply too.
I would imagine that my motherboard would take a second SSD pretty easily after I take the old 1tb HHD out.
@disco P I did something to my drive a while ago which freed up something like 10 to 15gb of space, I can't remember what I did, it was a command I typed in command prmpt after searching the internet, a neat trick which worked, I think it was something to do with safe mode.
P.S. I never noticed any less performance playing games from the same SSD that windows is on, not sure if I should have noticed anything, I do notice when I play games from the HHD though I can here it tick and load at certain times during gameplay which annoys me.
Anyway thank you for the link too, what an amazing application, Far Cry 4 takes up 30GB and I have 65GB in steam games, I only have 150GB of games on the 1TB HHD but I will still probably go all out on a 1TB SSD.