Penryn is not a revolution, but rather an evolution of Intel's Core 2 family of processors. Three new technologies have been crammed into this new square of silicon to make faster and more powerful laptops with longer battery life.
First is the 45nm size reduction of the processor's die (the tech term for a processor's casing or mold). This die shrink means the processor can have features and innards as small as 45 nanometers wide, which means that Intel can squeeze more processors out of a single slab of silicon. The newfound space not only drives down prices, but also enables the new processors to use less energy and run at cooler temperatures. Cooler-running processors mean that Intel can ramp up computing speeds without melting the insides of the computer (or burning your lap, for that matter).
When a processor's die is shrunk, however, it becomes easier for electrons to leak out wasting electricity, and counteracts some of the benefits of the size reduction. To combat this leakage, Intel has introduced a new transistor technology called High-K that reigns in much of the leakage and leads to more energy efficient processors. Tests have shown that Penryn processors can get almost a full hour of battery life over older Core 2's during normal usage and about 20 minutes more while playing back a DVD.
Lastly, is a new set of instructions called SSE4, which is aimed at speeding up media functions such as video encoding (converting video so you can edit it on your computer) and playback. The catch is that software developers must write applications to specifically take advantage of the new instructions. The popularity of the Intel processors and the dramatic performance increase guarantees that companies will get on board. Applications that are already SSE4-enabled (like the DivX video encoding suite) have seen boosts in performance of almost 40%. That's quite a difference when you're talking about cutting down what typically takes an hour to encode HD video to just over 30 minutes.
