How Big of a Power Supply Does My System Need?

[PCGAMER123456789]

This is my first time building a pc and I was wondering how many watts my gaming system is going to require? I want to get a power supply that is gold certified and a power supply that fits in the Corsair 350d Micro ATX case. Here are the components for the system I'm going to build:

■ CPU: Intel Core i5 4670k Haswell 3.4GHz
■ Motherboard: MSI B85M GAMING LGA 1150 Intel B85 HDMI SATA 6Gb/s USB 3.0
■ Video Card: GIGABYTE GV-N780OC-3GD REV2.0 G-SYNC Support GeForce GTX 780 3GB 384-Bit GDDR5 PCI Express 3.0 HDCP Ready WindForce 3X 450W Video Card
■ Mushkin Chronos 480Gb SATA III SSD
■ RAM: G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 2400 (PC3 19200)
■ CPU Cooler: CORSAIR Hydro Series H100i Extreme Performance Water/Liquid CPU Cooler. 240mm

 

[turkey3_scratch]

I would get a 650 watt. It wouldn't hurt to go with 700 or 750.

 

[millwright]

Specs call for 600watt, but even a quality 550 would be ok. specs are inflated because people buy crappy power supplies.

Yes , bigger won't hurt for future upgrades.
But if you arer on a budget you are safe with a quality brand name 550.

http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-780/specifications

 

[millwright]

If you do go minimum make sure it has the right PCI-e plugs an 8 and a 6

And I recommend a 600,

 

[Dark Lord of Tech]

Seasonic made , great quality.

PCPartPicker part list / Price breakdown by merchant

Power Supply: XFX XTR 650W 80+ Gold Certified Fully-Modular ATX Power Supply ($79.99 @ Newegg)
Total: $79.99
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-09-02 20:57 EDT-0400


Or for extra power made by the best Super Flower.

PCPartPicker part list / Price breakdown by merchant

Power Supply: EVGA 750W 80+ Bronze Certified Semi-Modular ATX Power Supply ($76.66 @ Newegg)
Total: $76.66
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2014-09-02 20:58 EDT-0400