The Inquirer learned AMD will release its 4x4 platform on November 14th:
After AMD laughed off Intel's dual core and upcoming quad core microprocessors as "not true multicore", with the main reason they physically share two dies, it seems to have done the same thing. Intel's Pentium D "Presler" consisted of two Cedar Mill cores, Core 2 Extreme "Kentsfield" features two Conroe cores and shared the front side bus.
Quadfather or the 4x4 as AMD marketeers have it, is actually a dual die quad core chip, using the Opteron processor socket and will launch on November 14th. The nForce 680a, the launch chipset is proof that the AMD-Nvidia strategic alliance still has four legs.