Advanced Micro Devices Inc (AMD)

[Not a Short]

"A64 will certainly be an overclocking target, and it will be interesting to see how easy AMD makes it. With the integral heat spreader, there will no longer be access to the package bridges that tinkerers could once play around with. I am very curiouls if multipliers will be factory locked or not. They currently are not unlocked on Tbred and Barton, though they were initially."

I can't speak for Barton but the Tbred-B 1700+ is partially unlocked. As in the multipliers are unlocked but limited to the 5 to 12.5 range. You don't have to play with the bridges at all to take a 1700+ up to a 2100+. If you want to clock it higher you need a faster FSB (still no bridge work) to get it to it's limits. You would only need to do bridge work on it if you plan to go into exotic overclocking with something other than air cooling.