How Much Wattage Will I Need?

[thisistrivial]

First time build here so I have literally no clue how much I need and don't want to go overboard on how much! If someone could give me an idea that'd be great, here's the build I'm thinking..

Motherboard - Gigabyte Z87M-D3H
CPU - Core i5 4670k
GPU - GTX 760
RAM - Corsair 8gb 1600mhz
HDD - WD Caviar Blue 1TB
SSD - Samsung 840 EVO 120GB

Also if someone has any advice or recommendations on any of the components that'd be appreciated, I've got a £900 budget.

 

[animal]

You can check this page for recommended wattages for systems based on the type and amount of GPUs installed:

http://www.realhardtechx.com/index_archivos/Page362.htm

If you plan on overclocking you will need an aftermarket CPU cooler. If you are going to overclock, I'd recommend getting a quality PSU 50-100 watts over the recommended system wattage from Seasonic, XFX, Corsair (except their CX series) or Antec.

Also, I recommend you verify your selected RAM is compatible with your motherboard. You can do this two ways:

1. Go to the motherboard's webpage and check its QVL for compatible memory (QVLs do not necessarily list all compatible memory)

2. Go to the memory maker's website and use their RAM configurator program/app, just tell it your motherboard and it will list all the compatible memory that they make.

 

[thisistrivial]

Thanks for the advice! I plan on overclocking at some point in the future so I'll grab the 650W, also didn't realise motherboard and RAM compatibility was an issue so cheers for the heads up!