What kind of W PSU should I get...? [Solved]

Solution
Check here first :
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-780/specifications
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-970/specifications
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-960/specifications

Second , add 50W at least for high factory overclocked cards
Look here:
http://www.tomshardware.co.uk/forum/id-1804779/power-supply-unit-tier-list.html

e.g
i5 4690 -84W
GTX 970- 145W ref card
other 100W
----------
329W

XFX 550W TS has 44A (or 45) on +12V rail i.e. 528W(or 540W)
So , XFX 550W TS is enough
Check here first :
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-780/specifications
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-970/specifications
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-960/specifications

Second , add 50W at least for high factory overclocked cards
Look here:
http://www.tomshardware.co.uk/forum/id-1804779/power-supply-unit-tier-list.html

e.g
i5 4690 -84W
GTX 970- 145W ref card
other 100W
----------
329W

XFX 550W TS has 44A (or 45) on +12V rail i.e. 528W(or 540W)
So , XFX 550W TS is enough
 
Solution