StephenC Posted May 4, 2005 Share Posted May 4, 2005 I am trying to use two sticks of xms cmx512-3200c2 ver 5.1 Lot 0505054-0 for dual channel in a dfi nf4 ultra-d mobo. I have bios set to optimized default. which have dram settings in bios genie set to auto. Here is my issue. When I set the dram voltage to 2.6 and 2.7 my PC is stable but it locks up during memtest86 running test 8 with test 82% complete current subtest at 17% Pattern ffffffff-3 showing. At voltage settings of 2.8 and 2.9 I can run memtest86 forever with no errors, but cannot not boot to windows keeps bsod'ing loading profile. Oh yes, I have run memtest on each one at a time bios set to optimized default settings - 25 pass's each with no errors and no bsod's. So my guess is this is a timing setup issue. I am kind of new with manually setting up ram. (Not new to computer building and troubleshooting) I could use some help here. I have posted this issue at the dfi forum....but the most I could get was corsair and dfi-amd64 just don't get along And good luck. Thanks Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted May 4, 2005 Corsair Employee Share Posted May 4, 2005 With this MB you should be using an ATX 2.0 Compliant PSU, and I would set the following settings and test the modules one at a time. Dim Voltage to +2.7 Volts: CAS Latency CL=2.5 Row Cycle Time tRC Bios Default Row Refresh Cyc Time tRFC Bios Default Ras# to CAS# delay tRCD 3 Row to Row delay Bios Default Min Ras# Active Time tRAS 6 Row Precharge Time tRP 3 Write Recovery Time Bios Default Write to Read delay Bios Default Read to Write Delay Bios Default Refresh Period tREF Bios Default Enable 2T Timing Disabled Then test the system with http://www.memtest.org and make sure it's stable! Link to comment Share on other sites More sharing options...
StephenC Posted May 4, 2005 Author Share Posted May 4, 2005 Thanks for the quick reply. I will make changes and test when I get back home. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted May 4, 2005 Corsair Employee Share Posted May 4, 2005 Please let me know how you make out! Link to comment Share on other sites More sharing options...
StephenC Posted May 4, 2005 Author Share Posted May 4, 2005 Ok Setup as above with dim voltage to 2.7. Ran test 8 only and locked up. Set dim voltage to 2.6 Ran test 8 - pass no errors. Then booted to windows and appears stable. I am currently running full memtest. 2 passes with no errors so far. I am going to run it for a few. Thanks. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted May 4, 2005 Corsair Employee Share Posted May 4, 2005 Just use the default tests, Test 8 on AMD platform is not suggested. Link to comment Share on other sites More sharing options...
StephenC Posted May 4, 2005 Author Share Posted May 4, 2005 Ok...I had ran just 8 first because that the test memtest86 locked up on. I am currently running full test now 3 passes w/no errors. I am using the memtest v1.51 that is included in my mobo's bios. Again thanks. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted May 4, 2005 Corsair Employee Share Posted May 4, 2005 You should be good to go! Link to comment Share on other sites More sharing options...
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