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khonjo

How to set memory speed and timings

5 posts in this topic

I installed DDR3 1866 but the memory is running at 1600. My question is how to change the speed to 1866. I changed the multiplier from 8 to 9.33 leaving "Auto" for the timings but that resulted in no boot. The memory is Patriot PV38G186C9KRD. The spec is DDR3 1866 with 9-10-9-27. FX-6300 is running on GA-970A-UD3.

This is what is shown on CPU-Z and this is the BIOS screen for the memory speed and timings. There are more than 9-10-9-27 to be set.

Edited by khonjo
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Hmmm. not really sure (haven't looked into your MoBo BIOS settings) but the Memory usually can't be changed above the range of the CPU (AFAIK, depending on MoBo) -

http://www.cpu-world.com/CPUs/Bulldozer/AMD-FX-Series%20FX-6300.html

It says that DDR3-1866 is supported. USUALLY "Auto" correctly sets it to the "slowest' Memory Stick.

This should be moved to the "Hardware" section by a Moderator/Supervisor for more visibility.

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"Designed for Intel 6/7 Series Platforms" is printed on the package of the Patriot memory. I wonder if this means the memory is not compatible with FX-6400. On the other hand when "Manual" instead of "Auto" is used for setting the memory speed and/or timings? I thought the "Manual" is used when "Auto" fails to set them correctly.

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Does the memory have XMP profile in it by chance? If so, there should be a way in the BIOS to make it use those values, without having to dig in timings manually.

I am not familiar with AMD platform at all though, but I believe the basics still apply...

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The RAM's spec shows Feature Overclock XMP 1.3. I looked for the XMP on the BIOS but could not find it. I decided to go ahead and changed mult facter from 8 to 9.33 and the timings for those I know of or 9-10-9-27, and left defaults as were for those I do not know about. The result was that the system booted fine. The defaul values left unchanged appear to have been automatically changed. The CPU-Z now shows this. The voltage as shown on the RAM spec is 1.50 but the BIOS now shows 1.510V. Probably I do not need be concerned about. But It should work at 1.50V since I am not overclocking.

Edited by khonjo
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