hagak Posted November 5, 2007 Share Posted November 5, 2007 Ok for the past week I have been trying to isolate the cause of my MEMTEST errors. Prior I had the system running stable for several months and have made zero changes to the system. I started getting BSODs so first test was with MEMTEST which showed errors. NOTE: system is and never was overclocked, used SLI Memory Enabled for memory timings running on an ASUS M2N32-SLI motherboard with Athlon 6000+ CPU. So I began testing just one stick at a time to isolate which stick is bad, and low and behold individually the sticks run MEMTEST just fine. I even tested various memory slots to see if maybe a memory slot is bad. Now I decided to reset my BIOS to default but then enable just SLI Memory (setting VDIMM volt to 2.1V also) and run the tests again. This time after 5 passes no errors. Ok great, went back to the BIOS and checked YES for Plug-n-play OS and Enabled Q-Fan. Then ran the tests again, lots of errors this time. Reset PNP and QFan and ran the tests overnight. After 18 passes I had 17 pass and 1 fail. So any ideas of what I should do to isolate my problem? I am thinking it could be Memory, Motherboard or Power Supply. PSU is the Seasonic S12-600. Thanks Link to comment Share on other sites More sharing options...
DerekT Posted November 5, 2007 Share Posted November 5, 2007 This DRAM has been tested with either Asus M2N32-SLI Premium or Deluxe Try these settings: AI Over Clock Tuner: Manual CPU External Frequency: Manually set to 200MHz DDR2 SDRAM Clock: Manually set to 800MHz PCI Express Freq: 100<jz PCI Freq: 33.33 Performance Mode: User Define/Manual DRAM Timing Selectable: Manual SDRAM CAS Latency: 3T SDRAM RAS to CAS Delay (tRCD): 4T SDRAM Row Precharge (tRP): 3T SDRAM Active to Precharge Delay (tRAS): 9T SDRAM Write Recovery Time: 5 Write to Precharge Delay: 15 Command Rate: 2T DDR2 SDRAM Voltage: 2.4v Advanced voltage control CPU Vcore offset:_Disabled DDR2 Termination: 0.5x CPU to NB HT: 1.200V NB to SB HT: Auto NB Core/PCI-E: Auto SB Core/PCI-E: Auto SB Standby core: Auto Chipset Core Voltage: Auto This DRAM is pretty high end for such a setup. I'm not certain if you can run it on such a system with 2.1v. Try these manual settings and 2.4v on the DRAM. http://www.corsair.com/_datasheets/TWIN2X2048-6400C3DF.pdf Note the 3-4-3-9 @ 2.4V. Now you can set to the SPD manually with 5-5-5-18 and 1.9V and test as well. You can also set to 4-4-4-12 and 2.1V and test. Manually is the way to go with this very high end DRAM. Results? Link to comment Share on other sites More sharing options...
hagak Posted November 5, 2007 Author Share Posted November 5, 2007 Please note that I have the TWIN2X2048-6400C3 (no DF at the end). My memory does not have the heatsink that is on the DF version, it just has a heat speader. I was under the impression that the voltage for this memory should be 2.1V max, however I strongly suspect that if I bump the voltage up it may solve my issues. edit: Look what I found http://www.corsair.com/_datasheets/TWIN2X2048-6400C3.pdf and it states 2.2V, so I will give it a run tonight at 2.2V. On the FAQ page on this forum about this memory it states 2.1V. Link to comment Share on other sites More sharing options...
DerekT Posted November 5, 2007 Share Posted November 5, 2007 I would go with the 2.2V as stated on the SPEC sheet. I am surprised to see 3-4-3-9 @ 2.2V. That's very good timings with that voltage. RAM GUY will know. :) Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 5, 2007 Corsair Employees Share Posted November 5, 2007 I would go with the 2.2V as stated on the SPEC sheet. I am surprised to see 3-4-3-9 @ 2.2V. That's very good timings with that voltage. RAM GUY will know. :) That is right 3-4-3-9 @ 2.2 is recommended. Link to comment Share on other sites More sharing options...
hagak Posted November 6, 2007 Author Share Posted November 6, 2007 Ok so I tried a few things lastnight. First I bumped the voltage to 2.2V, and I immediately getting errors in MEMTEST. So I bumped it down to 2.150V and it took a couple of minutes before getting errors. So down to 2.1V and it did not get any errors after a few full passes, let it run overnight and it did get a few errors during the overnight run. I am currently letting it run at 2.050V to see how that goes, will let you know when I get home this evening. Does this give anyone ideas as to what might be causing the issue? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 6, 2007 Corsair Employees Share Posted November 6, 2007 at 2.2 volts did you test the modules together or one at a time? If both modules have the same problems when tested individually then there may be some other issue. If one passes and the other fails, you may have a bad module. Link to comment Share on other sites More sharing options...
hagak Posted November 6, 2007 Author Share Posted November 6, 2007 I did not test the modules seperately at 2.2V. However just got home after letting the machine run MEMTEST with both modules at 2.05V. MEMTEST ran for about 12hours with ZERO errors and 23 full passes. Is it safe to call it stable? Or should I do more testing? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 6, 2007 Corsair Employees Share Posted November 6, 2007 Looks like the system is stable! Link to comment Share on other sites More sharing options...
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