I just can't get anything over 400x9 stable. Not even OCCT stable. Here are my current settings for 400x9 which is both OCCT and Prime stable:

Code:
Thermal Management Control Disabled 
PPM (EIST) Mode Disabled 
Limit CPUID MaxVal Disabled 
CIE Function Disabled 
Execute Disable Bit Disabled 
Virtualization Technology Disabled 
Core Multi-Processing Enabled 
Exist Setup Shutdown Mode 2 
CLOCK VC0 divider AUTO 
CPU Clock Ratio 9x 
Target CPU Clock 3600MHz 
CPU Clock 400FSB 
Boot Up Clock AUTO 
DRAM Speed 266MHz/667MHz 
Target DRAM Speed DDR2-1000MHz 
PCIE Clock 100MHz 
Voltage Settings 
CPU VID Control 1.425v
CPU VID Special Add AUTO 
DRAM Voltage Control 2.05v
SB Core/CPU PLL Voltage 1.640v 
NB Core Voltage 1.479v 
CPU VTT Voltage 1.530v 
VCore Droop Control Disabled 
Clockgen Voltage Control 3.45v
GTL+ Buffers Strength Strong 
Host Slew Rate Weak 
GTL REF Voltage Control Enabled 
x CPU GTL1/3 REF Volt 106 
x CPU GTL 0/2 REF Volt 106
x North Bridge GTL REF Volt 107 
DRAM Timing 
Enhance Data transmitting  FAST 
Enhance Addressing  FAST 
T2 Dispatch Disabled 
Channel 1 CLK Crossing Setting  More Aggressive 
Channel 2 CLK Crossing Setting  More Aggressive 
CH1CH2 Common CLK Crossing Setting More Aggressive 
CAS Latency Time (tCL) 5
RAS# to CAS# Delay (tRCD) 5 
RAS# Precharge (tRP) 5  
Precharge Delay (tRAS) 12 
All Precharge to Act  AUTO
REF to ACT Delay (tRFC) AUTO  
Performance Level 7
Read delay phase adjust SEE BELOW
MCH ODT Latency AUTO
Write to PRE Delay (tWR) AUTO  
Rank Write to Read (tWTR) AUTO  
ACT to ACT Delay (tRRD) AUTO
Read to Write Delay (tRDWR) AUTO
Ranks Write to Write (tWRWR) AUTO 
Ranks Read to Read (tRDRD) AUTO 
Ranks Write to Read (tWRRD) AUTO 
Read CAS# Precharge (tRTP) AUTO
ALL PRE to Refresh AUTO
PCIE Slot Config 1X 1X 
CPU Spread Spectrum Disabled 
PCIE Spread Spectrum Disabled 
SATA Spread Spectrum Disabled 
read delay phase adjust press enter
Channel 1 Phase 0 Pull-In AUTO 
Channel 1 Phase 1 Pull-In AUTO
Channel 1 Phase 2 Pull-In AUTO  
Channel 1 Phase 3 Pull-In AUTO 
Channel 1 Phase 4 Pull-In AUTO 
Channel 2 Phase 0 Pull-In AUTO 
Channel 2 Phase 1 Pull-In AUTO 
Channel 2 Phase 2 Pull-In AUTO
Channel 2 Phase 3 Pull-In AUTO 
Channel 2 Phase 4 Pull-In AUTO
I've tried 412x9 for 3.7GHz, but it always fails. I've upped all the voltages and still I can't get it stable.

I'll have 3DMark scores for the HD2900Pro at these settings later.