At least my own AMD systems (several) have been very good for DAW-use, too. Especially the current 6-core workstation. Will probably move to FX8350 or some later version some day, but so far my 6-core can easily handle everything I need to do. No compatibility etc. issues. Those were, as someone said, the curses of ancient VIA and other exotic chipsets, and a thing of a past now.
AMD Phenom X6 1090T @4 GHz, 8 GB DDR3, Asus Crosshair IV, OCZ Vertex 2 SSD, Samsung F3, F1, WD, Radeon HD 5770, M-Audio AP192, Musical Fidelity X-DAC v3, X-CAN v3, Windows 7-64, Cubase 4.