Best gaming case under £50

[AndyC53]

Hi community,
my friend is upgrading his PC in the next few months and he is going to get a Sapphire R9 290 Tri-X which is 310mm long and he needs his new case to be big enough so the R9 290 Tri-X will fit into it. The case also has to have optimal airflow, at least two fans and possibly a fan controller. But all of this has to be strictly under £50 to fit his budget.
All answers are appreciated.

 

[gameboy1998]

The cooler master HAF 912 should meet all your requirements. I'm pretty sure it retails for 60$in the US but not so sure about England.

BTW: unless you are going to do litecoin mining with this build going with nvidia instead of amd will be beneficial.