Don't you wish every component in your computer were made by the same company? That's AMD's thinking behind a range of desktop DRAM -- leaping into bed with VisionTek and Patriot Memory who will build the branded modules to Sunnyvale's specifications, tweaked for speed with OverDrive tuning tools. You'll be able to pick up DIMMs in 2GB, 4GB and 8GB flavors -- a low-end "entertainment" model running at 1333MHz and 1600MHz, "performance" edition also at 1600MHz and a Radeon-branded unit t