About 5-8% increase clock for clock agaisnt the qx6850. I didnt go too far into the pages but Im assuming it definitely runs cooler too b/c its 45nm and it has intels new high-k metal gate silicon technology to decrease heat loss and lower watts.
He has it running at firstname.lastname@example.org on air cooling.
4 GHz and still first of the batch model. I'm already dreaming of what they'll do by next march when I'll be ready to upgrade my E6600.
One thing left to do right now. That's waiting for Phenom in sufficient number and high enough frequency to see if AMD will get back to where it was in the K6 days. That would be low-end market. I surely hope not!