airslash Posted January 28, 2009 Share Posted January 28, 2009 Hello, I recently bought 2 new memory modules to increase my total RAM capacity to 4GB DDR2. The old modules came with the pc when I bought it, and have the following specs: CM2X1024-6400 5-5-5-12 800Mhz 1.90v 1024MB As stated on the label on the 2 sticks. Now I bought 2 extra sticks of 1024MB to increase my total size; but when I opened the package I noticed the following: CM2X1024-6400 5-5-5-18 800Mhz XMS6405v5.1 The new batch of RAM does not mention the ideal voltage to be running, and their timing seems to be different. I'm fairly new into overclocking, and I want to know if I can get these 4 modules to work together on an OC'd system? I bought them from amazon.de and they didn't list the timings, now I hope that I can use these modules together. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted January 29, 2009 Corsair Employees Share Posted January 29, 2009 Mixing memory is hit and miss and not officially support but I would try what we have posted previously with 4 modules. With 4 modules I would suggest setting the memory frequency at DDR667 and set the memory Voltage to 2.0 Volts and set the NB/MCH/SPP Voltage to +.2 Volts as well and test the system with http://www.memtest.org. In addition, with some MB's (Mostly ASUS) you have to disable legacy USB in the bios when running any memory test. Link to comment Share on other sites More sharing options...
airslash Posted January 31, 2009 Author Share Posted January 31, 2009 Ok, I had a issue with my ram before, namely that I ended up with 2 different modules. The details are in this topic : http://www.asktheramguy.com/v3/showthread.php?p=386961#post386961 So In the end I bought additional memory with the same timings, but the versions didn't match. One kit was 5.2 version, the other was a 7.2 version. Besides that everything was the same (e.g timings and speed) I tried to boot my pc with the two new kits installed, but I wasn't able to even get past the BIOS screen. The PC constantly froze, windows recieved STOP errors. I even tried to lower the speeds and change my BIOS settings to take off the stress on these components, nothing worked. I was able to boot the pc with one of the kits installed. If I used the version 7.2 in dual channel, the pc booted fine. If I tried to combine it with the 5.2 version, the pc even refused to boot. Then I tried to boot with the 5.2version alone, to see if that would work, but the pc even refused to boot with that kit. Now I have my old DDR2 kit mixed with my version 7.2 and the pc runs smooth. It even runs at 800Mhz in dual channel mode with 4 modules on the board. As far as I read this doesnt work normally due the memory controller beeing overstressed. Now I want to ask, I think the kit I have now as spare is broken, as my pc refused to boot. Would it be possible to send these items back to Corsair and recieve a refund for them? I nearly went crazy of frustration....been working the whole day on this pc to finnally come to this conclusion Link to comment Share on other sites More sharing options...
Wired Posted February 1, 2009 Share Posted February 1, 2009 Corsair can't refund them as they didn't sell them to you. They can replace them via an RMA, no problem. Link to comment Share on other sites More sharing options...
airslash Posted February 1, 2009 Author Share Posted February 1, 2009 and how would I request such a RMA ? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 2, 2009 Corsair Employees Share Posted February 2, 2009 From the link in my signature, but we can only replace for the same part number that you send in and I am not sure the memory is the problem in this case but if you want to try that, please use the On Line RMA Request Form and we will be happy to replace it. Link to comment Share on other sites More sharing options...
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