Intel's Arrandale chips haven't been the best-kept secret around, and today Chipzilla made 'em official: the Core i3 and mobile Core i5 will launch on January 7, and we'd guess a bunch of new machines come along for the ride. Although the desktop Lynnfield Core i5 is a quad-core, both the new Core i3 and mobile Core i5 are dual-core -- and in a first for Intel, both of the new chips have an integrated GPU core that's being branded "Intel HD Graphics." The new GPU is supposedly good enough for "high-end" HTPC use, but manufacturers can add switchable discrete GPUs, so don't fret too much. Both Arrandale chips have Intel's latest hyperthreading tech, and th
