Unless I am being blind, I can't see a CPU cooler on the list?
I don't know Phenoms but I would imagine that overclocking on the stock cooler is not a great idea if you want to run a 24/7 overclock.
Also, if you are ok with spending £100 on 4Gb RAM then I would look around to find a C8 kit with tighter timings and faster speed, ie 1600MHz than the C9 kit you have listed there.
In terms of your motherboard, I don't think you can get hold of a much better AM3 board and I don't see any bottlenecks in your system either.
Personally, I'd swap out the mboard and ram to these:
Asus M4A79XTD Evo ~ £86
http://www.overclockers.co.uk/showproduct.php?prodid=MB-366-AS&groupid=701&catid=5&subcat=1481
4GB 1600MHZ DDR3 ~ £83
http://www.overclockers.co.uk/showproduct.php?prodid=MY-026-PA&groupid=701&catid=8&subcat=1517
That saves you £80, which is almost enough to change that 5770 to a 5850 - a bigger improvement than any amount of overclocking will give you.
You can probably get that CPU to around 4GHz on air, and I don't think watercooling (especially with that unit) won't take you much further - the main advantage of that unit over good aircooling is its silence. If that isn't an issue, you could just as easily get a £30-40 air cooler, and now afford the 5850 without spending any more money.
You can probably get that CPU to around 4GHz on air, and I don't think watercooling (especially with that unit) won't take you much further
Are you sure? Ive not clocked one of these chips myself - and I think Ive read about a new C3 revision - but a common achievable clock seems to be 3.7-3.8GHz.