Just some more info on Intel's roadmap.
http://news.com.com/Intel+stays+on+dual-core+track+through+2008/2100-1006_3-6071046.html
But Penryn is a dual-core 45-nanometer chip specifically designed for notebooks, sources said. Wolfdale is the name of the dual-core 45nm chip that will be slated for desktops in that time frame. Penryn is essentially a smaller version of Merom, which is due in August, while Wolfdale is a smaller version of Conroe, scheduled for a July launch.
Penryn and Wolfdale are among the first chips that will arrive based on the Nehalem microarchitecture, the successor to the Core architecture. Intel's decision to make those products be dual-core chips illustrate its focus on making sure new designs can be manufactured in large volumes, said Mercury Research analyst Dean McCarron, after learning of the plan.
There's an inherent level of risk involved when a chip company is introducing a new manufacturing technology, as Intel will do with Penryn and Wolfdale, McCarron said. Chipmakers can't be sure how the new manufacturing process will behave while cranking out chips by the millions, which means they tend to start off with designs that they already understand, he said.
So Intel is using multichip packaging technology to create its first quad-core processors in 2007, just as it used multichip packaging to create its first dual-core chips in 2005. Kentsfield, the quad-core chip, is really just two Conroe processors packaged together. While there is a slight performance tradeoff in this approach, and chip purists find it inelegant, it allows Intel to maximize its yields, the number of working processors that can be cut from a silicon wafer, McCarron said.