http://www.teksyndicate.com/videos/build-epic-650-pc-july-2012 this might work for ya

Truth be told, there are 2 things I'd prefer spend more money on : Case and Power supply.

Great choice on the PSU, but don't cut corners on the case, it'll definiteley change your life [and you may always reuse it for future builds ;) ]

Skullabyss is right, go check Logan's guide, it's really well made.

It looks pretty solid to me. I haven't use the Barracuda you mentioned but the reviews are pretty good. Are you getting a dedicated GPU?

Thanks for the input :)

I would love to spend a little more on the case but I won't initially be 'pushing the boundries' with overclocking and such so a perfect airflow you'd achieve with a great case isn't top priority. I know it's a little impatient but I wanna be playing my valve games again as quickly as possible.Would you still say that a better case is a must?

As for Logan's guide, it's brilliant, but it chooses a middleground. It doesn't cater for me putting a Graphics Card within the next few months as money becomes available, and showing the performance of the machine.

EDIT: Yes I'll be getting a dedicated graphics card as soon as possible afterwards, thinking of aiming towards a 560ti or maybe the amd/ati equivalent

Don't worry, I'm not saying a better case is a must and I understand you're on a budget. But for future reference, if you could spare a few dozen quids on a chassis, don't hesitate. It's so much easier to build, it's quieter and it just looks better than the old grey box. :)

Also, if you're going to use the stock Intel cooler, you don't need thermal paste. Save a few quids and upgrade to a 3570K [ https://www.aria.co.uk/SuperSpecials/Other+products/Intel+Core+i5-3570K+3.40GHz+%28Ivybridge%29+Socket+LGA1155+Processor+%2877W%29+-+Retail+?productId=49755 ] it has better iGPU and it's just a tad bit more expensive.

Finally, for the GPU, wait for the GTX660ti, first reviews are mind-blowing.

Thanks a lot man :) and yeah I'll deffo keep an eye out on that 660ti

Nice build, but I would definitely get an aftermarket heatsink. I don't trust the Intel stock heatsinks at all, especially with Ivy Bridge. I'd be afraid my cpu would burn itself into oblivion with that heatsink. I would suggest at least getting a Cooler Master Hyper 212+ and some Arctic Cooling MX-4.