Currently the fastest triple-core is the AMD Athlon II X3 445 and it is clocked at 3.1GHz. We're talking about a Rana based tri-core which is nothing more than quad-core Propus with one core turned off.
The CPU has 1.5MB cache or 512KB per core and the new iteration runs 100MHz faster. AMD is quite predictable with naming and clock speeds. The new CPU that is scheduled to come this quarter, Q3 2010, is named AMD Athlon II X3 450 and it runs at 3.2GHz.
AMD Athlon II X3 445 currently sells for roughly €80 in Europe and $85 in the US. We expect that AMD Athlon II X3 450 will take at this price point and that AMD Athlon II X3 445 will sink to $77 US.
The important thing is that three core generation lives even after 2010 and should stay put for the most of 2011.