Crosshair IV Formula + F3-1600cl9d-4GBTD

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So I am having trouble running these Trident 2000MHZ at 2000MHZ. When I run it at 2000 I have instability problems even though Asus claim to support these modules.

I have a 1090T in a Crosshair IV Formula.

I can run these at 1800 however without any problems.

DDR voltage is set to auto which does 1.7V, I also tried 1.6V as specified by the RAM, and also 1.65 as specified by Asus.

Timings are set to auto, but I have also tried 9-9-9-27. Still no luck.

What must I do to get these to run stable at the advertised speed?

[zxcvbnm]

asus really sucked on x6 lol.

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Does that mean I won't be able to get the memory to run at 2000MHZ?

[GSKILL TECH]

Post up pictures of your BIOS so we can see what's going on.

You may be interested in this:

http://www.gskill.us/forum/showthread.php?t=4980

Thank you
GSKILL TECH

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http://img143.imageshack.us/i/19052010009.jpg/
http://img706.imageshack.us/i/19052010010.jpg/
http://img688.imageshack.us/i/19052010011.jpg/
http://img139.imageshack.us/i/19052010012.jpg/

Note: I am aware the turbo says 4500MHZ. This was not the applied setting though, I just forgot to change the multiplier before taking the photo. It is usually 3600, and I get instability.

Another wierd thing is, that some times when trying to boot at these settings, Windows would seem to load, then change and look as if I'm booting from CD and then show Windows Vista boot screen even though I am using Windows 7 before it crashes and reboots.

[GSKILL TECH]

Have you tried testing them individually to see if both sticks will cause this problem?

Thank you
GSKILL TECH

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I have not yet. I will do so today and post back results.

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Both modules work fine when they are on their own. It is only when I use both do they begin to cause problems at 2000MHZ. I have tried all of the slots on the motherboard, and the problem is only there when both modules are installed.

Any ideas?

[GSKILL TECH]

Seems like the CPU needs some tweaking. Set NB Frequency to 2400MHz, CPU-NB Voltage +0.1V and see if that helps.

Thank you
GSKILL TECH

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Tried it, didn't help. It actually made it worse.

[GSKILL TECH]

May have a bad motherboard or CPU. Have you tried the other two slots? What slots do you have them installed in?

Thank you
GSKILL TECH

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Tried in all slots, still nothing. I can only get it stable at 1800 or lower.

[GSKILL TECH]

Post your best BIOS settings and we can see if anything is wrong.

Thank you
GSKILL TECH

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After many hours of messing around I finally got it working at 2000MHZ. However I had to set it to ganged mode instead of unganged mode. Is this normal? I'm not quite sure what they are but I heard Unganged mode is faster?

[GSKILL TECH]

What settings did you adjust in BIOS?

Unganged mode is 2 seperate memory channels (2 x 64 bit), where as ganged mode is combining both channels as one single channel (1 x 128 bit).

Depending on what you do with your system, but generally if you are less mutli-tasking, a single 128 bit would be best. Otherwise, if you plan on running mutiple things at one time, 2 x 64bit may be better. It is like having two people do a lot of normal jobs, or one strong person doing one important job.

I'm sure you won't even be able to tell a difference.

Thank you
GSKILL TECH