Intel Core i3, mobile Core i5 processors coming January 7 By Joanna Stern posted Dec 17th 2009 4:10PM 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 thedesktop 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 anintegrated GPU core that's being branded "Intel HD Graphics." The new GPU is supposedly good enough for "high-end" HTPC use, butmanufacturers can add switchable discrete GPUs, so don't fret too much. Both Arrandale chips have Intel's latest hyperthreading tech, and the mobile i5also has the Turbo Boost core-overclocking feature found in the desktop i5 and i7, which redirects power to a single core to boost performance when needed. We got to see a few Core i3 and i5 laptops and desktops in action at Intel's pre-CES briefing today, although we didn't get to run any tests. Themobile Core i5 systems on display were doing a fine job running Call of Duty 4, while the scaled-down Core i3 rigs were playing Blu-ray movies and World ofWarcraft -- not a bad demo, but we'll let you know when we see some real numbers.