How much power do I need?

Looking to buy a new power supply because mine is getting old, and extremely messy and I was wondering around how many watts is suggested?

Here's what I have in mind, is this good and will it do?
http://www.newegg.com/Product/Product.aspx?Item=N82E16817341018

Here are my specs:

OS: Windows 7 Ultimate 64-bit.
CPU: Intel Core i3 530 @ 2.93Ghz, Clarkdale 32nm.
RAM: 4.0GB Dual-Channel DDR3 @ 668MHz (9-9-9-24)
Mobo: ASUSTeK Computer INC. P7H55-USB3 (LGA1156)
Video Card: ATI Radeon HD 5670
HDD: 977GB SAMSUNG SAMSUNG HD103SI ATA Device (SATA)

I know it won't be a lot because I don't have a high-end gaming system, but I'd still like your opinion.

Cheers,
Kiwi.

Plenty!

It would do even for a high-en gaming system!

For your rig, 450W would be enough, but at this price, go for it!

And you will keep it for your next rig.

manu2b said:

Plenty!

It would do even for a high-en gaming system!

For your rig, 450W would be enough, but at this price, go for it!

And you will keep it for your next rig.

Click to expand...

Okay, thanks.