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Stable OC achieved, please help with memory


RealSnaD

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Hello guys,

 

I finally have my system Prime95 (large FFTs and blend) stable for 12+ hours. Memtest86+ v2.01 isn't giving any errors either after two full cycles. I am not OCing any farther. However, I would like you to help me with making my memory work faster. I am currently running it at 1:1 ratio. What would be your suggestions on the timings and other settings to make it faster. Here are my stable BIOS settings and some options that I have for the memory:

 

http://i204.photobucket.com/albums/bb53/realsnad2/New%20PC/Stable%20OC/IMG_8537.jpg

 

http://i204.photobucket.com/albums/bb53/realsnad2/New%20PC/Stable%20OC/IMG_8538.jpg

 

http://i204.photobucket.com/albums/bb53/realsnad2/New%20PC/Stable%20OC/IMG_8539.jpg

 

http://i204.photobucket.com/albums/bb53/realsnad2/New%20PC/Stable%20OC/IMG_8542.jpg

 

http://i204.photobucket.com/albums/bb53/realsnad2/New%20PC/Stable%20OC/IMG_8543.jpg

 

http://i204.photobucket.com/albums/bb53/realsnad2/New%20PC/Stable%20OC/IMG_8544.jpg

 

http://i204.photobucket.com/albums/bb53/realsnad2/New%20PC/Stable%20OC/untitled.jpghttp://i204.photobucket.com/albums/bb53/realsnad2/New%20PC/Stable%20OC/untitled1.jpg

 

http://i204.photobucket.com/albums/bb53/realsnad2/New%20PC/Stable%20OC/untitled2.jpghttp://i204.photobucket.com/albums/bb53/realsnad2/New%20PC/Stable%20OC/untitled3.jpg

 

Thank you in advance. Any help would be greatly appreciated!

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Test with 1021 and 9-9-9-24 2T, then 1361 and 9-9-9-24 2T. Test with 1T at both speeds. If you can make 1361 with 9-9-9-24 1 or 2T, then test with 9-8-8-22. Test with Static Read Control Enabled and disabled each instance.

 

Keep in mind that you have the low end of the DRAM scale and overclocking the low end of DRAM seldom gives any great lowering of timings. You may get some bandwidth increase but I doubt any great timings, but you never know. Just try and see what works.

Download Everest Trial Version from here -->

Install Everest and right click on the (i) icon in the system tray. Choose Tools --> Cache and Memory Benchmark. Run the Benchmark. This will show you what increases you gain.

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Thanks, Derek! I've tried all combinations that you suggested. The only one that my system POSTs with is DDR-1361 9-8-8-22 2T. Passes Memtest86+ v2.01 with no errors but fails Prime95 Blend. I get BSOD or the system just restarts or Prime95 fatal errors. I didn't change any other settings. Would you please take a look at my settings and see if you can figure out what might be the problem here?
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I think you have your Termination voltage too high. You have 1701 after 1361 and you have purchased the low end DDR3. I hope you are not expecting numbers like 1700 with that DRAM. I doubt if that DRAM will make any great overclocks. I never buy the lowest end to overclock. There's no hard and fast numbers. You can manually raise the tRFC to ~100 and see if that helps the overclock. As I said, you have already lowered the timings and found stability. If you are looking for high end overclocks, then buy higher end DRAM.

 

I would have personally bought 1600MHz DRAM to see if I could make the 1700Mhz, but 1333 and hoping for 1700 is not a good hope.

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Actually, I am not hoping to OC my ram. Well, I was in the beginning. Now I just want a stable overclock. DDR3-851 5-5-5-15 2T seemed to be stable. I thought it was. Memtest was fine and small FFTs worked too. But Blend still failed. I just need a stable overclock at 3.6 no matter what my RAM is set to. I'll try to lower my FSB Term. 1.30?
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Download Memtest86+ V2.01 from--->

Download CPU-z from
.

Prime95 is not the test for the DRAM. You test the DRAM in the boot to the memtest CD.

 

Getting >400Mhz FSB on a 45nm Quad Core is NOT a given. At any rate, to test the DRAM, remove the overclock, run the DRAM at 1333Mhz with 9-9-9-24 2T and 1.6v and boot to the Memtest CD. Allow for two full passes.

 

1.3v is considered the top end of the termination voltage. You might want to raise the PLL to 1.6v.

 

Results?

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I did run Memtest86+ v2.01 without any overclock. The memory was set to 1333 9-9-9-24 2T 1.6v. No errors for 10+ hours.

 

I don't feel safe raising PLL any higher since my chip's datasheet says max is 1.5 +5% = 1.575. FSB Term max is 1.45 according to the same datasheet.

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