Re: phenom x4 955 --> low frame rates
Well, presumably AMD will have chipset drivers available for their motherboards. Their driver download section of the site is an absolute joke (as are their ATi based chipsets). I know its obvious but have you checked for drivers on the disc that should have come with your motherboard.
Personally, I'd flog the 790FX motherboard off and get an nForce based board instead. Less hassle, no less performance and my 940 is effortlessly doing 3.4ghz in my motherboard.
CPU: Intel i7 2600K
Cooler: Cooler MAster Hyper 212+
Motherboard Asrock z68 Extreme 4
Memory: 8gb Corsair DDR-3 1333
Video: 2x Galaxy GTX 670 reference 2gb
PhysX: Gainward GTX 460 SE 1gb
Video Capture: Compro E-700 DVB-T PCI-e
PSU: Thermaltake Toughpower 1200W
Monitor: Samsung 305T 30"
Case: Coolermaster stacker 830
Hard drives: 5x 500gb seagate SATA (non raid)
Burner: Samsung SH-S18L
OS: Vista Ultimate 64 bit and Windows 7 Ultimate 64 bit
MS Sidewinder Joystick
Logitech G25 wheel
Logitech 5.1 speaker system