Power supply requirement

[Loyd1456]

Im planning on building a pc with the following specs:
- Amd fx6300 (cpu)
- Geforce GTX 750(graphic card)
- Msi 970A-G46 (motherboard)
- 3x 4gb ram
My question is of how much should be the watts of the power supply i need to get?

 

[Luminary]

A good 450w PSU is all you need to power that reliably.

That said, you can get a 550w like this one for almost the same price as good 450w unit and it will provide a stronger base for future upgrades:

Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply ($47.60 @ SuperBiiz)
Total: $47.60
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2015-11-30 12:54 EST-0500

 

[JackNaylorPE]

You can find the PSU requirement for all recent nVidia GPUs here

http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-750/specifications

Thermal and Power Specs:
95 C = Maximum GPU Temperature (in C)
55 W = Graphics Card Power (W)
300 W = Minimum System Power Requirement (W)

Watch the holiday sales ... Friday the EVGA 750 B2 was $40

The Seasonic S12 ($47.60) is one of my fav's and highly rated (see review 9.7 rating)
http://pcpartpicker.com/part/seasonic-power-supply-s12ii520bronze
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story5&reid=185

 

[Dark Lord of Tech]

Fuentes de Poder
http://www.yoytec.com/product_info.php/cPath/26_67/products_id/10314
Cooler Master V550