Built, Last minute tweaks, gaming.

Hi there, Ive put together the components for a budget gaming PC, excluding all peripherals and HDD and optical drive and OS.

Motherboard:
http://www.scan.co.uk/Product.aspx?WebProductID=1265988...

CPU:
http://www.ebuyer.com/product/191955

Alternatively I was wondering if it would be better to get the Athlon II X3 2.9 (http://www.ebuyer.com/product/176043) But it has a smaller cache and theres 0% chance of unlocking a 4th core, which would be best for OCing?

RAM:
http://www.ebuyer.com/product/192047

PSU:
http://www.scan.co.uk/Products/480W-CiT-Black-12cm-Fan-...

Case:
http://www.ebuyer.com/product/134826

Monitor:
http://www.ebuyer.com/product/134826

Graphics Card:
http://www.scan.co.uk/Products/1GB-Gainward-GTS-250-900...


Okay, What clock speed should I run all round, I was going to go with 1333Mhz, would this work? How would I set that up?

Is everything compatiable?

How will the GPU do on the 1080P monitor?

Are there any cheaper alternatives that ship to UK that will not compromise in performance?

Thanks.