Featuring the world's most advanced processor technology, the AMD Athlon™ 64 FX processor is the first Windows®-compatible 64-bit PC processor designed specifically for PC enthusiasts.”

(Source: http://www.amd.com/us-en/Processors/ProductInformation/0,,30_118_9485_94...)

“Processor manufacturers employ several techniques to improve their products. One of the most significant involves shrinking the lithography process to reduce surface area and power consumption, thereby increasing production efficiency and operating frequencies. Using its Automated Precision Manufacturing (APM) system, AMD has taken the critical step from its 130 nanometers (nm) Silicon On Insulator (SOI) process to a 90nm SOI.”

“Lithography is the printing process used to manufacture processors. When we say we manufacture a device at 90 nanometers (nm), that number corresponds to the International Technology Roadmap for Semiconductors’ (ITRS) definition of the minimum metal pitch – the smallest metal “lines” – used. These tiny proportions allow AMD to etch onto a silicon die complex circuits of millions upon millions of transistors, which allow for more-powerful-but-smaller processors. AMD uses a combination of 248nm and 193nm lithography tools, along with resolution enhancement techniques, to etch sub-50nm transistor gates – the smaller transistors switch faster and draw less power.