Please Help with CM2X2048-8500C5D and 780I Sli

[AngusMacGyver]

To whom it concerns,

 

I am trying to overclock my system posts fine but Vista locks up (freezes on desktop) upon initial loading after i enter my password whenever I put my ram settings on anything but auto. I am afraid to raise the memory voltage, would that maybe help? Keep in mind that I am trying to overclock my setup with known working configurations. (My voltage/overclock setting are at bottom of post)

 

(1.8v, 800mhz, 5, 5, 5, 18 Works)

 

(2.1v 5,5,5,15 Locks Up)

 

I have memtest86'd both sticks several passes with no errors (one at a time and both at the same time)

 

I am looking for some help to get my ram to run at full speeds. Below are my complete ram settings in bios. Could someone please tell me what to put the Advanced Memory Options to? I would love to know the exact advanced memory settings for this ram/mobo.

 

My Ram:

CM2X2048-8500C5D 1066mhz 2.1V Version 1.1 (2 dimms=4GB)

 

 

Bios Ram Defaults (These work at 800mhz but not at 1066mhz)

 

tCL (Cas Latency) 5

tRCD 5

tRP 5

tRAS 15

 

Commands Per Clock 2T

 

 

Advanced Memory Settings (All Auto)

tRRD (Auto 4) 4

tRC (Auto 30) 30

tWR (Auto 6) 6

tWTR (Auto 10) 10

tRED (Auto) 7.8uS

--------------------------------------------------------------------

 

My BIOS Overclocking settings to get my Q9550 to 3.4GHZ. Many others report these settings to be stable on their Q9550/780i SLI setups!

 

CPU Core 1.375 Volts

 

CPU FSB 1.3 Volts

 

Memory 2.1 Volts

 

nfSPP 1.45 Volts

 

nfMCP 1.6 Volts

 

HT nf SPP<->MCP 1.4 Volts

 

Ram I set to Linked 3:2, with FSB 1600mhz, ram 1066mhz, 8.5 Multiplier=3.6GHZ (Posts fine, but windows locks up loading)

 

Any help/ideas to get this working would be greatly appreciated, including specific/manual settings for my advanced Memory Settings!? Thanks!

[RAM GUY]

If I understand you correctly you are over clocking the CPU and it will not ruyn the memory at DDR1066; is that correct?

Have you tried loading setup defaults and then setting the memory settings and testing them one at a time with http://www.memtest.org?