Sapphire R9 270X Dual-X OC

Graphic Card: Sapphire Vapor-X R9 270X One fan stop working 3 years ago and I realized that the other fan was a little bit slow, So I removed the both fans and fixed them by putting a small drop of a Light Machine Oil, But only one fan is working although the Two Fans were working some day and...

I am wanting to build a custom pc. I want to play any game at high to ultra settings. I have made a parts list. http://nz.pcpartpicker.com/list/M47gXH . Is this good for only gaming. Or can it be used as a workstation/rendering etc. Thanks in advance. In New Zealand