Im looking at mini ITX cases on the egg and most of them at most have like 150W PSUs

Cant I put something stronger?
Will a micro atx psu fit in mini itx?

These are the parts im planning on using for build:

CPU:X3 8650

mobo: http://www.newegg.com/Product/Produc...82E16813153124

ram: http://www.newegg.com/Product/Produc...82E16820146724

HDD: http://www.newegg.com/Product/Produc...82E16822148337

Optical: http://www.newegg.com/Product/Produc...82E16827129016