Re: amd phenom II VS Intel Core i7
If you're ONLY gaming, an AMD build is the better buy, especially if you plan to crossfire. The 790FX chipset is usually cheaper than any intel board that handles 16x/16x.
For anything else, intel usually wins. AMD's Athlon II and Phenom II chips were built to compete with Intel's Core 2 cpu's, which they do admirably. Nehalem-based cpu's (i3/i5/i7), however, nearly always win. Even the dual-core ones can rival most of AMD's quads.
Athlon II 635--CM Hyper 212+ ║ GIGABYTE GA-790XTA-UD4 ║ Powercolor HD5770 ║ 2x2GB G-Skill Ripjaws Blue ║ Antec Truepower New 550W ║ NZXT M59 ║ Win7 Pro 64-bit ║ Samsung Spinpoint F3 1TB