i5 4690
gigabite H97 D3h mobo
(8X2) 16 gb ddr 2 corsair vengeance ram
samsung ssd
CORSAIR CX600 power supply
ZOTAC GTX 730 2G DDR5 graphic card
1. 600 wt are good for my rig, or i have to increase the power. please suggest.
2. Excessive power like 750 wt or 1000wt harmfull for my rig ?
gigabite H97 D3h mobo
(8X2) 16 gb ddr 2 corsair vengeance ram
samsung ssd
CORSAIR CX600 power supply
ZOTAC GTX 730 2G DDR5 graphic card
1. 600 wt are good for my rig, or i have to increase the power. please suggest.

2. Excessive power like 750 wt or 1000wt harmfull for my rig ?