Transforming a Phenom II X4 960T into a Phenom II X6 seems possible

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Transforming a Phenom II X4 960T into a Phenom II X6 seems possible
On April 26th, AMD will launch its new range of Phenom II X6 hexcore processors, codenamed Thuban. These processors will have six cores, 6MB of L3 cache and a feature similar to the Turbo mode fitted to Intel's higher-end processors.

To design a Phenom II X4 based on these processors AMD had two options: either design a new version of the chip with just four cores, or ship the six-core versions with 1 or 2 defective cores (or even 6 perfect cores, if the demand is high enough) as quad-core processors. As the first choice is much more costly, AMD have logically chosen the second option.

The Phenom II X4 "T" processors are in fact the same chips as those sold under the Phenom II X6 brand. The result of this is that if you're lucky you may be able to reactivate one or both of the disabled cores, for a free speed boost. Attempting to do so may result in system instability if the cores turn out to be defective, however.

Someone has already attempted (and apparently succeeded) in this trick, using an Asrock 890GX Extreme3 based on an AMD 890GX chipset and AMD SB850 southbridge.

Source: OC-Workbench