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2 kits of TR3X3G1866C9DF?


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I recently bought and built an I7 PC (specs in profile).

I wanted to get some fast memory on the day and my local store had some TR3X3G1866C9DF available so I got 2 sets - total of 6GBs.


runs fine at default speed and also up to 1600. but when I try to run at 1866 system will not boot.

CPU is running at normal default speed i.e. 2.66GHz.


I have tried to turn on XMP - no boot.

I have tried to keep XMP off and then set the SPD to 14 - also no boot.

in addition to the above I also set the DRAM voltage to 1.64 and QPI/VTT to 1.4V. to no avail. I did not want to try it at 1.6V as that was shown as red and flashing in the BIOS settings... :-(


I checked the thread at:


and I can't see any differences.


Please help.


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Could you please give me the link to the official product documentation on your site that explains that?


At least when I did my research before buying I did not see any information that this memory would not be able to run at the stated 1866 spec.

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Each PACKAGE can run at 1866 with no problem. Keep in mind that they do not test 2 packages together, so they cannot guarantee 2 packages will run together at the rated speed due to the memory controller in your CPU's limitations. It's entirely possible, just no one can guarantee it. I think some have done it, but they've also been using water cooling, or some more hard core stuff.
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