need some mem advice with Ballistix

[boglwe]

Ok ok, here is the deal, I am a bit confused about a few things.

Here are my current settings.

Q6600 at 3.1 @ 9x344, 1.280 Vcore (as per CPU-z) I think i set it around 3.3ish in Bios.

My memory reads the following.
Crucial Ballistix Tracers PC6400
Freq: 412.8MHz (x2 of course)
FSBram=5:6 (this is what sparked me to write this thread actually)
5,5,5,15
Command rate 2t.

Now, my first question is, does this look right?

My second concern was, everytime I put the CAS to 4,4,4,12, I am VERY unstable, blue screens, bad tests in Prime95, etc etc. Now, My bios settings are conservative, as in, the only thing I have touched is FSB, VCORE, Mem settings (5,5,5,15). before I set the memory settings, they were something like 8,7,8,19. I tested the memory with memtest and its good. What am I doing wrong. I would like these stix to run in 4,4,4,12. Or am I out to lunch?

Thanks in advance.

 

[SerpentRoyal]

1:1.20 divider will net 413MHz RAM speed. Crucial B needs 2.0-2.2Vdimm to run at 4-4-4-12-2T. A good stick can hit 400MHz with 1.8V/4-4-4-12-2T

 

[PCTC2]

Yes. As SerpentRoyal said, check that your vDIMM is at 2.2v to run at 4-4-4-12 timings.

 

[boglwe]

OK, stupid question, but How do I check my Vdimm and once I see it, where do I increase it? Is there a word that is used in Bios more often?

 

[Quiksilver]

I believe gigabyte doesn't give you the actual memory voltage and instead only gives you DDR2 Over-Voltage Control

 

[SerpentRoyal]

Nominal is 1.8V. That's why I never appreciate those Gigabyte boards.

 

[boglwe]

ahhhh
got it, so put up about .2? I assume

 

[Quiksilver]

Tracers run @ 2.2v depending on what giabyte defaults its between .01 and .04