poopchute Posted November 7, 2005 Share Posted November 7, 2005 I am having a lot of problems with this. I bought the CMX1024-4000PRO about a year ago, put it in an AGP Athlon XP motherboard, ran great in dual channel. I recently upgraded to an AMD Athlon 64bit 3500+ Processor with a 7800 GTX, and I can't get it to run in dual channel. We've tried this on two boards, manually set timings, reset bios, everything. I've done my homework and realized that it's not the chipset that runs the memory, it's actually the CPU that runs the memory. How can I get this awesome ram to run in dual channel!? I'm getting desperate! Link to comment Share on other sites More sharing options...
CandyKid Posted November 7, 2005 Share Posted November 7, 2005 Do you have one memory module or two? PLUR CK Link to comment Share on other sites More sharing options...
poopchute Posted November 7, 2005 Author Share Posted November 7, 2005 Do you have one memory module or two? PLUR CK I have 2 memory modules. Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted November 7, 2005 Corsair Employee Share Posted November 7, 2005 Please set the Dim Voltage to 2.7X volts and then set the timings manually to the tested settings for the specific module you have, and then test the module/modules one at a time with www.memtest.org! If you still get errors, please follow the link in my signature “I think I have a bad part!” and we will be happy to replace them or it! However, if you get errors with both modules that would suggest some other problem and I would test them in another system or MB to be sure. If they both run one up but not in dual channel that would suggest some other problem and I would test them in another MB. Link to comment Share on other sites More sharing options...
poopchute Posted November 9, 2005 Author Share Posted November 9, 2005 I have the timings, 3-4-4-8, but I'm a noobie, where would I set those timings correctly on my mobo? Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted November 9, 2005 Corsair Employee Share Posted November 9, 2005 If you are not over clocking I would set the timings at Cas 3-3-3-8 at 2.7 Volts. Link to comment Share on other sites More sharing options...
poopchute Posted November 13, 2005 Author Share Posted November 13, 2005 I ran the tests at 3-3-3-8 and 3-4-4-8 at 2.7 volts, both reported no problems. Tried setting them up in dual channel, still getting post errors. I think the problem might be my AMD Athlon 64bit Processor, because I heard that on the 939 processors the memory controller is on the CPU. It would explain that it didn't work in either one of my boards of 939, but would work on Athlon AGP boards. Any ideas? Link to comment Share on other sites More sharing options...
pie_uk Posted November 14, 2005 Share Posted November 14, 2005 on your motherboard, put them in the correct 2 dimms which are rated for dual channel configuration, you will have to check your mother board manual, then go into the bios, and set the command rate to 1T , this mite help your problem, (you dont manually set them to "dual channel" your self) Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted November 15, 2005 Corsair Employee Share Posted November 15, 2005 If the module will run and pass http://www.memtest.org one at a time or in single channel but the MB will not post or run properly when in D/C, that would suggest a problem with the memory controller, either the Bios you have installed is not new enough for the CPY you have or the CPU needs to be replaced. Link to comment Share on other sites More sharing options...
poopchute Posted November 23, 2005 Author Share Posted November 23, 2005 I'm starting to think it's the CPU controller. But after afew tweaks, I can get 1 stick of ram to work in the system (1x512), but the other stick won't work at all. I think I'm just going to RMA them both. :( Link to comment Share on other sites More sharing options...
Freeman_JI Posted November 23, 2005 Share Posted November 23, 2005 You may have to upgrade your BIOS that's what my problem was a new CPU (Venice core) with a MOBO that had a bios that did not properly support my CPU and since the AMD64's have the mem controller on the CPU it won't work. (as I found out) Link to comment Share on other sites More sharing options...
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