At FSB speeds of 333 and higher, they should have the same stats, right?

There are no official reviews so I dont know what any of this means, but here's what I have heard:

- newer stepping (G0 vs. B2)
- 6850 is rated higher (3.0 vs 2.4)
- runs at lower voltage
- higher price, (~$50 US)

Given the price difference, how is the 6850 going to compare to the 6600 for air-cooling systems?