Hot on the heels of the second generation Intel Core 2 Duo launch, an internal memo began making the rounds with Intel's 45nm Xeon core frequencies.
These 45nm Xeons, based on the Penryn generation of processors, also feature the 1333 MHz front-side bus found on the new Core 2 Duo stepping. Each die features 6MB of L2 cache -- giving the two dice quad-core Harpertown Xeons a total of 12MB of L2 cache.
Unlike the desktop roadmap, dual-core Xeons take a more auxiliary role. Intel only laid out plans for three dual-core SKUs at launch; one of which is a low-power CPU. These dual-core 45nm processors, dubbed Wolfdale, will only consist of a small amount of shipped 45nm Xeon processors.