Asus P5B-E & E6600 - At 3.2 Ghz now, help me get to 3.6!

Intel Core 2 Duo E6600 2.4 Ghz
Asus P5B-E Mobo
G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500)
Artic Freezer Pro 7
Artic Silver 5 Thermal Paste
CPU/Heatsink lapped


I'm running at 400x8 right now, and can achieve 3.2 ghz. Prime95 is stable for more than 10 hours, therefore I'm satisfied with stability.

My settings:

FSB: 400
Multiplier: 8
CPU vCore: 1.425
NB vCore: 1.55
SB/ICH: Auto
Memory Timings: 5-5-5-15
Memory Voltage: 2.0 V
DRAM: 800 mhz







I tried running 400x9, for a total of 3.6 ghz. The system boots into Windows fine, however Prime95 fails shortly after beginning a torture test. (but normal desktop usage appears OK)



Any ideas on how to safely get 3.6 ghz on air? I was running 1.5-1.55V for the above screenshot. (set in BIOS)

Also, I'm running memory at 800 mhz. I'm doing this to stay at a 1:1 ratio, which I've read is best, but 1000 mhz is stable too.

I also had 2 more GB of RAM, for a total of 6 GB, however my older 2x1 GB G.SKill DIMM's don't let my system boot when trying overclock with them. I've noticed the rated voltage for the older DIMM's is 1.8-2.0V, and the newer ones are rated at 2.0V-2.1V. I'm only running 2.0V on memory, but the older ones still won't let the system boot into Windows. (BSOD error) They both support 5-5-5-15, but they differ in total speed supported. (800 vs. 1066)

Link to older DIMMs: http://www.newegg.com/Product/Product.aspx?Item=N82E168...

So my RAM setup is:
2x2 GB (1066)
2x1 GB (800)

Any thoughts on how to fix this? Preferably I'd like to get this system setup with a stable overclock, with my full 6 GB. I'm only running 4 GB now, but hoping to get past this issue.



Thanks,
Ace