well this is what i tried:
AI Tuning: Manual
CPU Frequency: 398 because of strap change and clockgening
DRAM Frequency: DDR2-796Mhz
OPCI Express Frequency: 100
PCI Clock Synchronization Mode: 33.33Mhz
Spread Spectrum: Disabled
Memory Voltage: 2.1
CPU Vcore Voltage: 1.375
FSB Termination Voltage: Auto
NB Vcore: AUTO
SB Vcore (SATA/PCIE): AUTO
ICH Chipset Voltage: AUTO
Memory Remap Feature: Disabled
Configure DRAM Timing by SPD: Disabled
DDRAM CAS# Latency: 4
DRAM RAS# to CAS# Delay: 4
DRAM RAS# Precharge: 4
DRAM RAS# Activate to Precharge: 4
DRAM Write Recovery Time: 2
DRAM TRFC: 35>>>considerable impact on performance and stability
DRAM TRRD: 3
Rank Write to Read Delay: 9
Read to Precharge Delay: 7
Write to Precharge Delay: 9
Static Read Control: Disabled
Modify Ratio Support: Enabled
Ratio CMOS Setting: 7
CIE Support: Disabled
Max CPUID Value Limit: Disabled
Vanderpool Technology: Disabled
CPU TM function: Disabled
Execute Disable Bit: ENABLED
PECI: Disabled
This gives me 2.8Ghz, i was able to boot into vista didnt run any stability tests but i have a hunch that it would be stable. the temps were core1:40C and core 2 41C.
I tried FSB 440 after that with x6 multi, it booted into vista for 5 seconds and i was happy since cpu-z showed 3.09GHz but then BSOD and auto restart of pc

.
What should i do to take it past 3Ghz and be stable. i have seen people with 3.5Ghz stable with the same setup as mine. Unfortunately they dont state the values they used.