Pav40 Posted January 18, 2012 Share Posted January 18, 2012 Hi all, Recently I purchased the 16Gb kit CMZ16GX3M4X1600C9. After the installation I started getting BSODs. As a result I ran on my memory both Memtest 86+ ver. 4.2 and Memtest 86 ver. 4.0b. After a number of experiments with different configurations and settings of the modules I found out that one of them is failing at 1333/1600 MHz, 1.5 – 1.55 volts when its timings are set at 9-9-9-24. If I relax the timings down to 9-9-9-27 the errors do not occur. I have tested on two systems with identical symptoms: System 1 – ASUS Sabertooth FX + Phenom 1090T System 2 – ASUS P8P67 Pro + Core I7 2600K Now my question is whether this is normal. May I go on with the memories set at 9-9-9-27 or should I insist on RMA with the retailer? Link to comment Share on other sites More sharing options...
Wired Posted January 18, 2012 Share Posted January 18, 2012 It'll work fine at those timings, and you probably won't notice the difference, but I'd RMA them to be safe. Link to comment Share on other sites More sharing options...
Pav40 Posted January 18, 2012 Author Share Posted January 18, 2012 I do not care about the performance difference, which is meager, of course. The question is if the failure at 9-9-9-24 indicates a potential problem in the future :) Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 18, 2012 Corsair Employees Share Posted January 18, 2012 Wait was that at DDR1600 or DDr1333? If it was at DDR1600 I would set the memory frequency to DDR1333 and retest and use Memtest 86+ version 4.20 from http://www.memtest.org. And make sure that you disable Legacy USB when running memtest. Link to comment Share on other sites More sharing options...
Pav40 Posted January 18, 2012 Author Share Posted January 18, 2012 Thank you for your reply, RAM GUY: The memory fails both at 1333 and 1600 MHz with or w/o legacy USB support. I tried as well increasing the voltage to 1.55, but to no avail. What is more, at the second pass of memtest 86+ v. 4.20 it gave me errors even at 9-9-9-27. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 18, 2012 Corsair Employees Share Posted January 18, 2012 That sounds more like some other problem, test the modules one at a time and go to BIOS setup and load setup defaults and set the memory Voltage to 1.6 Volts and set the memory frequency to DDR1333 and leave the timings at AUTO but set Command Rate to 2T Manualy and Disable legacy USB and exit the BIOS saving changes and boot with a CD from http://www.memtest.org. Link to comment Share on other sites More sharing options...
Pav40 Posted January 19, 2012 Author Share Posted January 19, 2012 Well, I agree. The issue is strange indeed. I have put the sticks in the Intel machine once again and they have passed a number of runs of Memtest86+ 4.20 at 9-9-9-27, CR2T, default voltage. On that machine I cannot disable legacy USB because it has no CD and I must run Memtest from an USB drive. When I test on the AMD machine, however, one and the same stick fails notwithstanding the settings (I did not try 1.6 volts, however). I have tested on the AMD machine with an 8 GB pair of CMZ8GX3M2A1600C9 and they run flawlessly at 1600MHz, 9-9-9-24 1T, default voltage. The same goes for the remaining 3 sticks of the 16 GB kit. So, my impression is that on the AMD machine for whatever reasons one of the sticks in the 16Gb kit fails regardless of the BIOS settings. It does not however fail on the Intel machine when its timings are set at 9-9-9-27 instead of 9-9-9-24. Apparently, I will run the 16Gb kit on the Intel machine. PS. The Intel machine is powered by Corsair TX 950 and the AMD machine is powered by Corsair HX1000W. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 19, 2012 Corsair Employees Share Posted January 19, 2012 With more than 2 modules installed you cannot run the command Rate at 1T, it will have to be set to 2T and on the AMD MB you listed; it officially only supports DDR1333 and what I would run them at. I would try and increase the CPU/NB Voltage +.2 Volts when all four slots are filled. Link to comment Share on other sites More sharing options...
Pav40 Posted January 20, 2012 Author Share Posted January 20, 2012 Correct, the officially supported speed of Phenom's memory controller is 1333 MHz. The stick fails however even at that speed with the memory controller voltage set at 1.35 volts. Anyway, I am tired of experimenting with the AMD system. The sticks have been so far working OK on the Intel system. I ran both memtest 86+ v. 4.2 - 2 passes and Prime 95 - 6 hours. Neither test showed problems. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 23, 2012 Corsair Employees Share Posted January 23, 2012 It is likely not the memory but we can try and replace them if you like: please use the link on the left to request an RMA and we can replace them if you like. Link to comment Share on other sites More sharing options...
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