Help me spec an ITX build

[Scottland]

I'm thinking of putting together a Sandybridge ITX box, and would appreciate a little help speccing it.

The spec I would like is:
Core i3 2100/2120
8gb DDR3
Gfx card good enough for 1080P playback and powering a 27" 2560*1440 display. Looking at an ATi 5570.

At the moment I'm looking at the Silverstone SG05/6 but I don't know if I'd need the 450w PSU or if the 300w would suffice.

What about a cooler for the ITX case?

Any and all advice welcome

 

[Scottland]

Haven't decided on a motherboard yet, and although that would make things easier in terms of space - for the price though I could have another ITX board and PCIe card - along with enough change for 8gb RAM

 

[Scottland]

You may want to see my post here.

http://forums.overclockers.co.uk/showthread.php?t=18304001

What's your use case? You setup is overkill for full HD video.

There are loads of videos on YouTube for the cases. Really useful.
http://www.youtube.com/watch?v=nxF-5HczPr8

I'll be doing programming/web design and some Photoshop on it, hence the rest of the spec. The Gfx card only needs to be able to power the display and playback video really.

 

[Scottland]

Sounds like 2D only stuff. 2D wise any card would do for you.

If you want to go cheaper, G620/840/850 would be better. Because if you bu a separate graphocs card you are going to waste i3's built-in intel graphics card anyway.

The G620/840/850 doesn't seem to make much sense to me, the i3 2100 seems to perform better and has the same TDP.