I got them from Delta's UK distributor (Aerco) one of the only companies I could find that sell them in single units...

In regards to the temps I ran a quick 1 hour prime @ just over 3.9ghz earlier today before I went out and was getting load temps that were around 14-16c cooler, adjusted for ambient and on the same settings as I have prime'd 8hours stable at on my previous setup.. (52/52/49/49 @ 24c ambient for those that are interested)... so assumming that the motherboard can hold up will run a couple of hours prime tomorrow @ 4.023ghz just to get an idea of how it compairs to my best run on the old setup and then will start to push durring the day tomorrow.. maybe tomorrow night I can get a nice low ambient run at 4.075/4.1 ish assumming i can get my P5K-E stable at that sort of FSB