We got our first look at AMD's Fusion series earlier this year when we reviewed the company's dual-core Zacate 18W processor, formally known as the E-350 APU. Fusion is the marketing name for a series of APUs (Accelerated Processing Units) that AMD has been developing since 2006 when it acquired ATI.As you should know by now, Fusion is all about combining general processor execution along with 3D geometry processing and other functions of modern GPUs into a single chip. The E-350 we examined in February was part of AMD's "Brazos" platform and combined a pair of Bobcat cores with a Radeon HD 6250 graphics unit to deliver some truly impressive performance. Not only was the E-350 more powerful than Intel's Atom when it came to raw processing power, but the GPU was also much faster than anything we had seen paired with the Atom before, including Nvidia's Ion.