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TR3X6G1600C9 timings for 1066


Dave31

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I currently use 6GB of Corsair XMS3 DDR3 1600 C9 memory in my system. I run it at 1066 MHz because I don't want to overlock the uncore of my i7 920 to take advantage of the 1600 MHz speed of my memory. When I use the memory timings set to Auto at 1066 MHz in my BIOS it sets it to 8-8-8-20-1T. However when I used the XMP profile, it sets it to 6-6-6-18-2T @ 1.65V if I choose 1066 MHz. The Everest Ultimate program says my memory can do 6-6-6-16-2T @ 533 under the Extreme Memory Profile section but if I set it to XMP enabled and 1066 in the BIOS it sets it to 6-6-6-18-2T. Which timing is the correct one for 1066 MHz? Also if I wanted to use 1.5V at 1066MHz and not use the XMP profile is 8-8-8-20 the correct timing for these modules at 1.5V.
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Check out http://en.wikipedia.org/wiki/Intel_Core_3. It says here that the Uncore of the i7 920 is suppose to be 2.13GHz. The Uncore consists of the L3 cache and and the integrated memory controller the i7 CPU. Having my memory run at 1600MHz would mean that my Uncore would have to be at least double the memory speed I'm running at, so it would be overclocked to 3.2GHz on my i7 920. I tried keeping my Uncore at 2.13GHz while running my memory at 1600 MHz but Windows Vista would would stop loading and show a BSOD unless I set the Uncore to Auto (3.2GHz for my CPU). I don't want to keep any part of my system overclocked, although I do overclock just for the fun of it once in a while. So I just want get the correct latencies for my RAM while running everything within spec.

 

I'm using TR3X6G1600C9 memory.

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If you are not going to use the XMP settings at DDR1600 just leave the timings at Auto it will set them properly for the speed they are running at and set the memory Voltage only if needed to 1.6 Volts.
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