Seeing as these are finally in stock in the UK, I have a couple of questions.

Firstly, can you measure the temp of all 4 cores with TAT or core temp? Or do they both only show the first two?

Secondly, as these are "Extreme edition" is the multiplier unlocked upwards?

If so then one of these is going on my "stuff I plan to buy" list

Both TAT and Core Temp read the sensors of all 4 cores.

QX6700 is an Extreme Edition in the same black box design as the X6800 and has fully unlocked multiplier.

Additionally:

Win2k won't use more than 2 cores, but WinXP Home (and Pro) will use all 4.

If you're going to overclock, enthusiast-level cooling is a must. This is a 130W TDP part just like the hottest Pentium 4's. Depending on your ambient temperature, stock cooler might cause stability problems even at 3.2-3.3GHz.

Yay!!

Thats me sold, I now know my next purchase after my 8800GTX

Yup, fully aware of that, my system is water cooled anyway, and I'm pretty confident the loop can take the heat. It cooled a 4GHz D805 without a struggle

so, whats the next step? 5.5ghz core 2 quad? phase change ftw!!!