Eziomandude :
I'm going to have another drive for files. This will be strictly for the OS.
If I had a nickel for everyone who said that, I could build a whole other PC.
It never, ever ends up as only the OS. And if you try, you're throwing away 1/2 the functionality of having an SSD>
Many things you DO want on it.
Utilities, applications (like the Steam client), etc, etc.
All those things will also benefit from being on the SSD.
You can get a 120GB if you want, but I'm just speaking from experience. As someone who started with a 120GB 5 years ago.
And with current prices, a 120GB doesn't make a lot of sense vs a 250GB.
Twice the space for less than twice the money. (unless of course you're looking at off brand SSD's from the cheap...