Timing For F3-12800CL6Q 8GBPI Quad Kit 4x2

[Dispatcher]

I seem to have a problem with my new ram in that it will not post if the settings are below 8-8-8-24. According to specs it should be able to run 6-8-6-24. I have adjusted the voltage to 1.6 and left most other settings as auto.
MB: Asus P5N64 WS Pro
Processor: Quad Core 3.2 Extreme 9770
Any help with Bios settings would be much appreciated!

Thanx
Dispatcher

[Tradesman]

Do you have the latest BIOS? What's your FSB? will be needing at least 1600...With 4 sticks and the max of 8GB will also have to raise the NB voltage, prob at least .1 can look into those things, then might also look to trying at 7-9-7-24 for 1600 as I'm not positive the NB MC (NorthBridge Memory Controller) can handle 1600 at such a tight CL (6)

[Dispatcher]

Yes the cpu bus is 1600 and I have the ram locked to the cpu bus? read another thread which said that may not be good? I have not increase the NB voltage but will try that. Will also try the 7-9-7-24. I have latest bios for MB and even did the latest for the raid controller card (adaptec 5405 with 2 ssd in raid 0) as the effects I was having with the lower timing (8-8-8-24) was causing the OS to become corrupted. However going back to the 9-9-9-24 stopped the corruption which lead me back to the ram and timing.

Thanx for your reply and help

Dispatcher

[Tradesman]

May be stuck with higher than spec timings, but by raising the NB voltage and/or the DRAM voltage should be able to get them stable, maybe at 7, and should at 8....again think 6 might just be to tight for the on-board MC