because COD is not what it used to be and the developers do not listen to what the people actually want.
Farming simulator doesn`t need that much to run either, unlike COD
seems quite good, I`d go for an SSD over the HDD though, only if you don`t need that much space right away.
SSD speeds are really good and you`ll definetly see the difference
What noise are you worried about? I hear quite a lot trough my Grado SR80 (also open), but you`ll get used to it.
If you have decent fans in your comp, you won`t notice them, cars, trucks and such will be audible most of the time