wittynewt Posted February 14, 2005 Share Posted February 14, 2005 Hi, Had the odd BSOD, CTD since I built this computer back on Oct 2003 but have always put it down to graphics driver and other issues. This is my gaming rig. Just upgraded from a P4 2.8 533 FSB to a 3.2 800 FSB last week and have started to see many crashes. Microsoft knowledge base suggested memory issues and since I am now running the memory at 400MHz compared to 320MHz this seemed to make sense. Ran microsofts memtest program extensively over the weekend with a variety of memory speeds and timing settings and this what I have found out: a. memory sees no errors after 4 hours of memtest with "by spd" settings at 266MHz b. memory sees the odd error with "by spd" settings at 320MHz after 4 hours of memtest. All errors are a single stuck at 0 bit. c. memory sees many errors with "by spd" settings at 400MHz after 10 mins :) of memtest. All errors are the same single stuck at 0 bit as b above. d. memtest sees no errors with CAS set to 2.5, all other settings defaults, after 1 hour of memtest - didnt have time to run my full 4 hour test. Only thing I havent done yet is to identify which of my 2 modules is at fault by running memtest with only a 512MB configuration twice. I will be doing this within next day. My system is: ASUS P4P800 DELUXE P4 3.2 1MB FSB 800 2 x XMS3200LLPT TwinX 512MB modules for 1GB total memory ATI 9800 Pro 128MB Bios Settings (let me knowif you need more here - dont have computer in front of me at present) AGP aper size -64MB Dram cas latency –by spd normally (or CAS=2.5 for one test above) Cpu/Dram freq ratio –By spd Cpu freq - default setting, for tests above when altering ddr frequencies, selected cpu FSB as 200MHz. Dram vcore- Auto CPU vcore – Auto Have not contacted my U.K. supplier yet since product is over 12 months old. have updated all bios/drivers etc including latest bios for motherboard to support new processor. Cheers WittyNewt Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 14, 2005 Corsair Employees Share Posted February 14, 2005 Please set the dim voltage to 2.75 Volts and then test the modules one at a time with http://www.memtest.org. And I would set the timings manually as well. CPU Freq: 200 MHz Memory Frequency: 100%/DDR400 Dim Voltage to 2.75 Volts Resulting Frequency: 200 MHz SDRAM CAS Latency: 2T SDRAM RAS to CAS Delay (tRCD): 3T SDRAM Row Precharge (tRP): 2T SDRAM Active to Precharge Delay (tRAS): 6T Link to comment Share on other sites More sharing options...
wittynewt Posted February 14, 2005 Author Share Posted February 14, 2005 Thanks, will do and let you know the results Witty Please set the dim voltage to 2.75 Volts and then test the modules one at a time with http://www.memtest.org. And I would set the timings manually as well. CPU Freq: 200 MHz Memory Frequency: 100%/DDR400 Dim Voltage to 2.75 Volts Resulting Frequency: 200 MHz SDRAM CAS Latency: 2T SDRAM RAS to CAS Delay (tRCD): 3T SDRAM Row Precharge (tRP): 2T SDRAM Active to Precharge Delay (tRAS): 6T Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 14, 2005 Corsair Employees Share Posted February 14, 2005 Please do let me know! Link to comment Share on other sites More sharing options...
wittynewt Posted February 14, 2005 Author Share Posted February 14, 2005 Hi, Did exactly as desribed below. 1. Ran both sticks in original locations A1 and B1 slots with the settings below. Reproduced a the same error I got with microsofts memory test with the only difference that memtest86 reported stuck at 1 errors with exactly same bit compared to microsofts tool, Possible I misread microsofts read out. Didnt bother to rerun with microsoft to verify. 2. Ran first single stick in A1 position with settings below. Got stuck at 1 faults at same bit location as above. 3. Ran second single stick in A1 position with settings below. Been running now for 20 mins with no errors. Case 1 and 2 above failed almost straightaway. So it does look like I have a single bad stick of RAM. Holographic Label on ram stick reads as follows: CMX512-3200LLPT XMS3205v1.2 XMS3200 512MB 400MHz 2326-T1 What should be my next step? Cheers, Witty. Please set the dim voltage to 2.75 Volts and then test the modules one at a time with http://www.memtest.org. And I would set the timings manually as well. CPU Freq: 200 MHz Memory Frequency: 100%/DDR400 Dim Voltage to 2.75 Volts Resulting Frequency: 200 MHz SDRAM CAS Latency: 2T SDRAM RAS to CAS Delay (tRCD): 3T SDRAM Row Precharge (tRP): 2T SDRAM Active to Precharge Delay (tRAS): 6T Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 15, 2005 Corsair Employees Share Posted February 15, 2005 Please follow the link in my signature “I think I have a bad part!” and we will be happy to replace them or it! Link to comment Share on other sites More sharing options...
wittynewt Posted February 15, 2005 Author Share Posted February 15, 2005 Hi, Just wanted to check I understood you correctly. I have 2 sticks, a matched pair of 512MB to make 1GB, to run in a dual DDR motherboard, one of which is bad. When you say "you will be happy to replace them or it" Do you mean you will replace my matched pair with another matched pair even though only one stick appears to be bad? If I were to return both. Or do you mean just retrun the bad one and the "them" bit is part of your standard phrasing? Cheers, Witty Please follow the link in my signature “I think I have a bad part!” and we will be happy to replace them or it! Link to comment Share on other sites More sharing options...
wittynewt Posted February 15, 2005 Author Share Posted February 15, 2005 Hi, I will return both sticks. Reading a few other threads I can see you have specifically made that suggestion to others to ensure you provide a matched pair in exchange. Cheers, Witty Hi, Just wanted to check I understood you correctly. I have 2 sticks, a matched pair of 512MB to make 1GB, to run in a dual DDR motherboard, one of which is bad. When you say "you will be happy to replace them or it" Do you mean you will replace my matched pair with another matched pair even though only one stick appears to be bad? If I were to return both. Or do you mean just retrun the bad one and the "them" bit is part of your standard phrasing? Cheers, Witty Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 15, 2005 Corsair Employees Share Posted February 15, 2005 That is correct and what I would suggest! Please let me know when you get the new modules. Link to comment Share on other sites More sharing options...
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