Thanks for the comments guys and np Jimmy, hope your build goes well. Stick around here as there are a lot of knowledgeable people willing to help out.
Removed the two supplied Akasa case fans last night and installed the x2 Noctua's I ordered but they do seem to be pushing more air and creating more sound, plus I think one of them has a rattle.
Didn't have much time to have a look at it so will have another look tonight and see if I can improve things a bit, will also try installing the ulna's.
Also did a bit of over clocking and stability/stress testing.
Mem's at 2.0v, 802mhz (or around that, can't remember at the mo) with 4-4-4-12.
401mhz FSB x8 = 3.2ghz on the CPU. CPU is just over 1.3v, something like 1.3125. In the BIOS at least, windows s/w shows it a bit lower, is this the voltage drop I've been hearing about?
Ran a double SuperPi 32M, 30min OCCP run and a few 1hr runs of different Orthos tests. All passed ok. \o/
tbh I'll probably just run it at that for now, might try to push the mem a bit more but don't really want to use lower latencies if I can help it. I've heard that gaming seems to benefit from lower latencies and not so much higher mhz?