adapting=adapted
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Magny-Cours
You probably heard by now that the new Opteron 6100 is in fact two 6-core Istanbul CPUs bolted together. That is not too far from the truth if you look at the micro architecture: little has changed inside the core. It is the “uncore” that has changed significantly: the memory controller now supports DDR-1333, and a lot of time has been invested in keeping cache coherency traffic under control. The 1944-pin (!) organic Land Grid Array (LGA) Multi Chip Module (MCM) is pictured below.
The red lines are memory channels, blue lines internal HT cache coherent connects. The gray lines are external cache HT connections, while the green line is a simple non coherent I/O HT connect.
Core 2 Quad Extreme Launch and QX6700 Review - PAGE 1
William Henning - Wednesday, November 1st, 2006
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Finally we get to publish the "straight scoop" on Intel's new Kentsfield Core 2 Quad processor. We spent the last few weeks with Intel's QX6700 and today we're reporting on our findings. But first, let's talk a little about Core 2 Quad in general.
If you're not already familiar with Kentsfield, it is Intel's newest processor sporting 4 cores, aka "Core 2 Quad". The outstanding Core 2 Duo, codenamed Conroe, of course is a 2 core part, and Kentsfield is its Quad core sibbling.
As you know, the Core 2 Duo is a true dual 
Now why would Intel do this?
See update.