dargath Posted November 12, 2007 Share Posted November 12, 2007 Hello, I have 4x1GB sticks 6400C4DHX. Each tests OK in single channel (A1 or B1) mode in the ASUS Maximus Formula. None work in dual channel mode (a1+b1) or (a2+b2) in the mobo...I get memory errors (system boots ok, errors on memtest). Everything is BIOS default...no OC or customization at all. timing is default 5-5-5-12. Do I need to increase voltage for dual channel? It's a new mobo and new memory...so theoretically could be either. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 12, 2007 Corsair Employees Share Posted November 12, 2007 DHX PDF Those modules need to have the memory voltage set to 2.1v for stable operation. Link to comment Share on other sites More sharing options...
Mr.Balzonya Posted November 14, 2007 Share Posted November 14, 2007 im having the same problem with my system. i have an ASUS M2N-SLI Deluxe and i have 4 gb's of CM2X1024-6400C4. When i first built this system it worked perfect with no problems. One morning i woke up to find my computer off when i had left it on the night before. When i turned it on i get an error code of 1 long beep followed by 2 short ones. i finally got it working againg by having only 2 gb's installed, 1 in dimm A and the other in DIMM 2. no combination of dual channel will work. i have tried changing the voltage and timing to exactly what is on the ram (4-4-4-12, 800MHz, 2.1v) with no luck. i have also updated the bios to the latest version. Any suggestions on what to try next? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 14, 2007 Corsair Employees Share Posted November 14, 2007 Please clear your bios, load setup defaults, and then set the memory timings to 4,4,4,12 and voltage to 2.1v, command rate to 2T. Disable Legacy USB Support in the bios and test the modules individually with http://www.memtest86.com for 3-5 passes each. Link to comment Share on other sites More sharing options...
Mr.Balzonya Posted November 14, 2007 Share Posted November 14, 2007 I tried doing exactly what you said but when memtest loaded all i got was: 1.FD 1.44MB System Type-(00) Starting Caldera DR-DOS... EMM386 3.27 Copyright © 1992 (etc) that that was it. any suggestions? should i try a floppy disk instead of a cd? please let me know. thanks Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 15, 2007 Corsair Employees Share Posted November 15, 2007 Please try the version from http://www.memtest.org! Link to comment Share on other sites More sharing options...
dargath Posted November 15, 2007 Author Share Posted November 15, 2007 OK, I tried at 2.1v and still getting memtest errors. Do I need to adjust the timing down to 4-4-4-12 from the default spd? I would figure it would be less stable then. Any other settings I need to try. I did have another pair of slightly slower Patriot DDR2 that I installed in dual channel mode. Tested just fine, so I don't think it's the mobo. I'd RMA them if you think it's necessary...just not sure there is an issues as I have 4 sticks and the chances of each of the pairs having a problem..... Would be more likely to RMA if I thought I could pay a difference and upgrade. Hey...if I'm gonna change, might as well go dominator. Link to comment Share on other sites More sharing options...
dargath Posted November 15, 2007 Author Share Posted November 15, 2007 Tried at 2.1 V and still no joy. I subbed some other memory in dual channel that I had from another system and it works fine. Odds were slim that both 2 stick sets were defective, but I have no other info to go on. Any other recommendations before I RMA? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 15, 2007 Corsair Employees Share Posted November 15, 2007 Let's get them replaced, please use the On Line RMA Request Form and we will be happy to replace them. Link to comment Share on other sites More sharing options...
Mr.Balzonya Posted November 16, 2007 Share Posted November 16, 2007 I'm going out of town fri morning so I will test them as soon as i get back. Thanks Ramguy and Ill let you know how it goes. Link to comment Share on other sites More sharing options...
rdragan Posted December 1, 2007 Share Posted December 1, 2007 I also have 4x1GB sticks of the 6400C4DHX (two sets of TWIN2X2048-6400C4DHX) on an Asus Maximus Formula SE with the original BIOS (401). The system boots up ok and Vista installed fine. I ran both the Windows Memory Diagnostics tool and memtest86+ 1.70 and both reported memory errors with all 4 stick installed. I ran these tests at both 4-4-4-12 timings with 2.1V and at the default 5-5-5-18 timings and always got the errors. I then tested each module independently at 4-4-4-12 timings and 2.1V with memtest86+ 1.70. Just to be sure I ran the tests twice placing the modules in different slots (A1 and B1). I disabled USB Legacy Support in the BIOS before the memory tests. The results were that: 1 module works flawlessly in both slots (A1 & B1). 3 modules report errors in memtest86+ (on the first pass!) in either slot (A1 or B1). I do not have another motherboard or set of RAM to experiment. I know the likeliness of 3 out of 4 modules to be bad is pretty low but what else could it be? Any suggestions? Should I RMA the memory and if yes should I send back all 4 modules or only the 3 that are bad? How long does the RMA process take (how long until I would get replacement modules)? Link to comment Share on other sites More sharing options...
Mr.Balzonya Posted January 10, 2008 Share Posted January 10, 2008 hey sorry it took me so long to get back but this is my results... i scanned all 4 of my sticks at once and on the it was into the 7th pass with 1871 errors. After that i scanned each stick individually in Dimm A1 with 10+ passes on each and it found no errors.. Any suggestions on what to do next? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 10, 2008 Corsair Employees Share Posted January 10, 2008 Can you tell me the bios settings you have set for both CPU and memory and any performance settings that you may have set? Link to comment Share on other sites More sharing options...
Mr.Balzonya Posted January 10, 2008 Share Posted January 10, 2008 i set everything to default and then changed the settings that you told me to change. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 10, 2008 Corsair Employees Share Posted January 10, 2008 Can you tell me exactly what you set? And what test are you getting errors on? If you want to just get them replaced, please use the On Line RMA Request Form and we will be happy to replace them. Link to comment Share on other sites More sharing options...
Mr.Balzonya Posted January 11, 2008 Share Posted January 11, 2008 After resetting my bios I set the memory timings to 4,4,4,12, DDR2 Voltage Control to 2.1v, and the command rate to 2T. Everything else says auto for the setting.. Does this help? Link to comment Share on other sites More sharing options...
Davidboren Posted January 11, 2008 Share Posted January 11, 2008 Hi All. I also have a Asus Maximus Formula and 4 x 1 GB Corsair 6400C4. At start my system didn't even boot with the rams, but I managed to set the voltage to 2,2 v (first insert just 1 or 2 rams than set voltage). Now everything works fine with all 4 rams in Dual-Channel Mode.... Cheers David Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 11, 2008 Corsair Employees Share Posted January 11, 2008 With 4 modules DDR667 would be suggested but you can try and set the NB/MCH Voltage to +.05 Volts as well. And if you have a setting TRC set it to 24. Link to comment Share on other sites More sharing options...
Mr.Balzonya Posted January 12, 2008 Share Posted January 12, 2008 Ok so i found the TRC and set it to 24.. However i could not find the NB/MCH setting. I tested all 4 modules again and got errors on test 7 in just about every pass.. Is it possible it could be my mother board or is it just faulty ram? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 14, 2008 Corsair Employees Share Posted January 14, 2008 What are you setting the memory frequency to? And it might be called NB SPP Voltage have not seen that MB as of yet to tell you. Link to comment Share on other sites More sharing options...
Mr.Balzonya Posted January 15, 2008 Share Posted January 15, 2008 800MHz.. and i will look for that setting. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 15, 2008 Corsair Employees Share Posted January 15, 2008 Might be called memory frequency or Qddr or Memory Frequency ratio. Link to comment Share on other sites More sharing options...
Mr.Balzonya Posted January 15, 2008 Share Posted January 15, 2008 Oh sorry i have the memory frequency set at 800MHz and i looked for NB SPP Voltage but still no luck. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 15, 2008 Corsair Employees Share Posted January 15, 2008 Might be called NB to CPU Core Voltage. If you do see it listed then tell me what voltages you have. Link to comment Share on other sites More sharing options...
Mr.Balzonya Posted January 15, 2008 Share Posted January 15, 2008 Still no NB but there was CPU core voltage and it was set to auto, also the lowest setting was 0.8v. Link to comment Share on other sites More sharing options...
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