Don't get cooler master. They aren't good either. Get a Corsair one.
And the fan is on the bottom, not on the top. It will fit inside normal case easily.
And HD 7750 should be able to run on it, but I wouldn't push it. These kind of power supplies can only cause trouble - around a year ago chinese power supply almost ignited my curtain - I was lucky to see the flames in time and more the PC away from the curtains.
My God. Now I am in real trouble. The local store said that they will only be able to provide iBall and Cooler Master but no Cross Air !
Moreover I have only managed to gather money good enough to buy HD 7750 and GTX 550 Ti. Out of this two, it appears that only HD 7750 is fit enough to that PSU capability. Those PSU will take up nearly the price of HD 7750 ! I am really stuck.
Whether to go with HD 7750 without an upgrade or borrow money for the PSU. HD 7750 does not give a requirement for the ampere in +12V rail. It only says it needs a 400 Watt
PSU. See here - http://www.amd.com/us/products/desktop/graphics/7000/7750/Pages/radeon-7750.aspx#3
And mine says regular 400 Watt and peak 500 Watt. Question is can the PSU perform when the HD 7750 is drawing ampere under peak load of around ~ 50 Watt. I hope HD 7750 won't go over 50 Watt under peak load.
P.S If the fan is at the bottom then it is a real problem. How come they put the fan at the bottom ! The whole hot air will circulate inside the chassis / cabinet and most importantly the hot air will blow pass the processor ! What a design ! It will heat up all the components inside the cabinet more !