1. Motherboard - Asus M4N82 Deluxe / 3x PCIe 2.0 x16 slots (dual x16 or Triple x8) 1x PCIe x1 slot 2 x PCI 2.2 slots 2. Graphic interface - 1920 x 1080 3. Memory - G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1200 (PC2 9600) Dual Channel Kit Desktop Memory Model F2-9600CL5D-4GBPI 4. CPU - AMD Phenom II x4 955 5. CPU Speed - 2100.0 MHz 6. Power Supply Make/Model - KINGWIN Mach 1 ABT-1000MA1S 1000W ATX / BTX SLI Certified CrossFire Ready 80 PLUS BRONZE Certified Modular Active PFC Power Supply 7. Watt output/Amperage - +12V@81.5A I am currently running 2 EVGA GTX260s in SLI and i want to play BF3 and Skyrim in ultra settings i was looking into the MSI GTX580 Lightning Extreme and the Asus Matrix gtx580 platinum my absolute price limit is $600 all advice is greatly appreciated ^^ many thanks!