AI Tuning: Manual
SLI Broadcast Aperture: Disabled
Nvidia GPU Ex: Disabled

System Clocks
PCIEX16_1 Frequency (Mhz): 100
PCIEX16_2 Frequency (Mhz): 100
PCIEX16_3 Frequency (Mhz): 100

FSB & Memory Config
FSB - Memory Clock Mode: Unlinked
x FSB - Memory Ratio: N/A
FSB (QDR), Mhz: 1066 (266FSB)
Actual FSB (QDR), Mhz: 1066
MEM (DDR), Mhz: 800 (400MHz) / 667 (333MHz)
Actual MEM (DDR), Mhz: 800.2 / 333.2

Overclocking
CPU Multiplier: 9
CPU Internal Thermal Control: Disabled
Limit CPUID MaxVal: Disabled
Enhanced C1 (C1E): Disabled
Execute Disable Bit: Disabled
Virtualization Technology: Disabled
Enhanced Intel Speedstep Tech: Disabled
LDT Frequency: 5x

Memory Timing Setting
tCL (CAS Latency): 4
tRCD: 4
tRP: 4
tRAS: 12
Command Per Clock (CMD): 2 clock (2T)

Advance Memory Settings
tRRD: Auto
tRC: Auto
tWR: Auto
tWTR: Auto
tREF: Auto
Async Latency: Auto

Spread Spectrum Control
CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled
MCP PCIE Spread Spectrum: Disabled
SATA Spread Spectrum: Disabled
LDT Spread Spectrum: Disabled

Over Voltage
Vcore Voltage: 1.325V (tends to undervolt at 1.31v idle - 1.29v load)
Memory Voltage: 2.0V
1.2v HT Voltage: 1.30V (1.40V for stability)
NB Core Voltage: 1.40V (1.50V when DDR > 500MHz, DDR1000)
SB Core Voltage: 1.55V / 1.60V
CPU VTT Voltage: 1.55V (Some members suggesting maximize this for overall stability, mobo varies)
DDRII Controller Ref Voltage: Auto
DDRII Channel A Ref Voltage: Auto
DDRII Channel B Ref Voltage: Auto

tCL:
Large influence on stability / Medium influence on bandwidth
From CAS 5 to 4 results change ~5-10mb/s. The same change will most likely be seen when going to CAS 3.
This timing is widely seen as most important (Command rate disregarded).
Recommendation: 4 for normal usage, 5 when oc'ing. Tweaked: 3.

tRCD:
Medium influence on stability / Large influence on bandwidth
tRCD going from 4 to 3 gives ~15mb/s. From 5 to 4 also yields 10-15mb/s.
This timing is considered second important after CAS, but actually it's more important on 680i/DDR2.
Recommendation: 4 for oc/normal usage. 5 if you want to push mhz. Tweaked: 3

tRP:
Medium/small influence on stability / Small influence on bandwidth
Results vary close to nothing when changing from 3 to 4 to 5.
Still this timing needs to finish its cycle before a new one starts, so dont set it higher than 5.
Recommendation: 4 for oc/normal usage. 5 if you want to push mhz. Tweaked: 3

tRAS:
Small influence on stability / Small influence on bandwidth
tRAS seems to act differently on integer/float results. Integer, going from 15 to 10 changes by ~5mb/s. Float doesnt change.
tRAS is an "end-timing", so dont go to high. And not lower than what tCL+tRCD equals.
Recommendation: 12 for oc/normal usage. 15 if you want to push mhz. Tweaked: 8

tRRD:
Small influence on stability / Small influence on bandwidth
tRRD of 2 didnt change the results. Nor did a tRRD of 4. This is a delay-timing so a too low value may result in recalculation.
Recommendation: Auto for oc/normal usage. 4 if you want to push mhz. Tweaked: 2

tRC:
Medium influence on stability / Large influence on bandwidth
This timing is quite surprising. Going from 30 to 21 gave ~90mb/s. From 23 to 21 gave ~15-20mb/s.
tRC is last timing before ram burst (data transfer).
Dont set too high. And tRC should be greater than tRAS + tRP or you might get corruption.
Recommendation: 21 for normal usage. 30 if you want to push mhz. Tweaked: 15

tWR:
Small influence on stability / Small influence on bandwidth
Small change from 6 to 3. Setting timing too low will cause ram to fail switching to "read mode".
Recommendation: Auto for oc/normal usage. 6 if you want to push mhz. Tweaked: 3

tWTR:
Large influence on stability / Small influence on bandwidth
From 10 to 8 didnt change results. 6 would lock up the system. This timing gives no bonus but affects stability a lot. Use with care.
Recommendation: Auto for oc/normal usage. 10 if you want to push mhz. Tweaked: 8(7)

tREF:
Small influence on stability / Small influence on bandwidth
Changing to 3,9us didnt show improvements in benchmark. It also didnt seem to affect stability. tREF was important with DDR1.
Recommendation: Auto for oc/normal usage. 7,8us if you want to push mhz. Tweaked: 3,9us

Command Rate:
Settings are 2T/1T. You probably already know a lot about this timing.
The 680i struggles running 1T above 800mhz. So do the ram - atleast 2,2v are needed.
This timing gives a great boost to bandwidth, but is fairly hard to attain.
I wont recommend any setting regarding this timing. You need to find what mhz you get with 1T, then find mhz with 2T, then compare benchmarks.

Post words:
The tRC and tRCD are two timings to take notice of. They yield good results compared to how they affect stability.
CAS isnt as important as in the DDR1 days. You might even say timings in generel arent as important as with DDR1.