Apple iMac G5 20-inch.

Apple's 20-inch iMac with a 2-GHz Intel Core Duo processor looks identical to the 2.1-GHz iMac G5 that we reviewed in January 2006. The primary difference is that--while Apple's own applications run faster on the new machine--current third-party software such as Adobe Photoshop CS2 is not yet optimized for the Intel processor, and such programs may run much more slowly than before.