AmpliTube iRig and Guitar Connect Cable

IK Multimedia's $40 AmpliTube iRig and Griffin Technology's $30 GuitarConnect Cable let you connect your guitar to your iPod touch, iPhone, or iPad. James Galbraith tries them out to see how well they work.

Lab tested: 27-inch Core i5 iMac/2.8GHz Quad-Core benchmarks

Macworld Lab takes a look at the performance of the new Quad-Core 27-inch 2.8GHz Core i5 iMac.

Lab tested: DVD ripping on the new iMacs

The new iMacs use different SuperDrive models, which can affect performance when ripping DVD movies.