CPU/Graphics Problems. Please Help.

Hello all. I'm having problems with my newly built pc. Here's my current issue. When running graphics-intensive applications (games, etc),
the system either freezes or shuts down the application. 3DMark06 CPU tests show 0 or 1 fps and in triangle tests the first couple are bad
as well, 1 or 2 fps. Everything else (all the graphics tests) looked fine as far as I could tell. I'm trying to run the pc on manufacturer settings and not overclock (I know, I'm posting in the OC forum but hope to get better help here). Can I get some help on settings for my CPU problem? I'm also looking for tips on other BIOS settings as well. Here's my setup and readings with CPU-Z and Asus Probe II, with my BIOS settings as well. Thanks in advance for the help.

My setup:
Vista Ultimate x64 SP1
Asus Striker II Extreme http://www.newegg.com/Product/Prod [...] 6813131274
Intel Core2 Duo E8600 http://www.newegg.com/Product/Prod [...] 6819115054
Zalman CPU Cooler http://www.newegg.com/Product/Prod [...] 6835118019
BFG GTX280 OC ed. http://www.newegg.com/Product/Prod [...] 6814143144
2x Patriot Viper 2GB DDR3: http://www.newegg.com/Product/Prod [...] 6820220344
2x 1T Seagate Barracuda http://www.newegg.com/Product/Prod [...] 6822148274
300G WD VelociRaptor http://www.newegg.com/Product/Prod [...] 6822136260
LG Super Multi BluRay drive http://www.newegg.com/Product/Prod [...] 6827136137
Coolmax CUQ-1200B 1200W psu http://www.newegg.com/Product/Prod [...] 6817159067
Antec Twelve Hundred case http://www.newegg.com/Product/Prod [...] 6811129043

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CPU-Z:
vcore: 1.200 V
core speed: 2000 MHz
multiplier: 6.0
bus speed: 333.3 MHz
rated fsb: 1333.3 MHz

Memory:
DRAM frequency: 533.3 MHz
FSB: DRAM: 5:8
CAS# Latency (CL): 9.0 clocks
RAS# to CAS# Delay (tRDC): 9 clocks
RAS# precharge (tRP): 9 clocks
Cycle time (tRAS): 24 clocks
Bank cycle time (tRC): 27 clocks
Command rate (CR): 1T

SPD (slots 1 and 2):
Max bandwidth: PC3-8500F (533 MHz)
Timings Table
Frequency 457 MHz 533 MHz
CAS# Latency 6.0 7.0
RAS# to CAS# 6 7
RAS# precharge 6 7
tRAS 18 20
tRC 24 27
Voltage 1.5 V 1.5 V

=================================================================================================================================================

Asus PC Probe II:
Vcore: 1.26V
CPU PLL: 1.54V
CPU VTT: 1.14V
Memory: 1.67V
NB: 1.33V
SB: 1.50V
DDR3 Term: 0.82V
3.3V: 3.38V
5V: 5.11V
12V: 12.10V

=================================================================================================================================================

BIOS v1104:
Extreme Tweaker:
Memory Level Up: Auto
AI Overclock Tuner: Auto
[grey]Overclock options: disabled
CPU Multiplier: 10.0
[grey] Actual FSB (QDR): 1333.3 MHz (tried setting this manually with 1333 MHz actual FSB and won't boot into Windows)
[grey] Actual MEM (DDR): 1066.7 MHz
LDT Frequency: 5x
PCIE Bus, Slot 1 & 2: 100 MHz
PCIE Bus, Slot 3, MHz: 100 MHz
SPP<->MCP Ref Clock: Auto
SLI-Ready Memory: Disabled
Memory Timing Settings:
P1: Auto
P2: Auto
tCL (CAS Latency): 9
tRCD: 9
tRP: 9
tRAS: 24
Command per Clock (CMD): Auto (1T)

Over Voltage:
CPU Voltage: 1.22500 V (ASUS PC Probe says voltage is 1.26, CPU-Z says 1.200 idle, auto set voltage too high)
Loadline Calibration: Disabled
Everything else: auto (Wont load windows with recomended RAM settings. And noticed on "Auto", RAM voltage skyrockets (3.0v or so) when running both CPUZ and Asus Probe II at once (According to Probe II).

CPU Configuration:
CPU Internal Thermal Control: Auto
Limit CPUID MaxVal: Disabled
Enhanced C1 (C1E): Enabled
CPU C State Capability: Disabled
Execute Disable Bit: Enabled
Virtualization Technology: Disabled
Enhanced Intel Speedstep Tech: Enabled
CPU Core 2: Enabled

Spread Spectrum Control:
all disabled

Advanced:
PCIPnP:
Plug & Play O/S: No
Primary display adapter: PCI-E

Power:
ACPI Suspend Type: S1&S3

Hardware Monitor:
Voltage Monitor:
VCore Voltage: 1.24V
CPU PLL: 1.53V
CPU VTT: 1.13V
Memory: 1.66V
NB Core: 1.32V
SB Core: 1.50V
DDR3 Termination: 0.81V
3.3V: 3.37V
5V: 5.08V
12V: 12.09V