Nismo122 Posted May 27, 2009 Share Posted May 27, 2009 As above i have 2 matching pairs of the below memory CM2X1024-8500C5D 4GB total in 2x 1024 pairs, My problem is lately i have been having alot of issues with a unstable sytem and BSODS. This morning tried to power up the PC and it would not boot, so i have today been testing with memtest and 2 of the modules are throwing up errors and i can only boot with 3 modules. As soon as i add the same 4th module it will not boot whatsoever :mad: i have tried all the usual of trying each stick in the different MB slots with no joy and they have been tested with the recommended settings. Any ideas? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted May 27, 2009 Corsair Employees Share Posted May 27, 2009 With 4 modules I would suggest setting the memory frequency at DDR667 and set the memory Voltage to 2.1 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...
Nismo122 Posted May 27, 2009 Author Share Posted May 27, 2009 With 4 modules I would suggest setting the memory frequency at DDR667 and set the memory Voltage to 2.1 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. Thanks for the reply and i had aleady disabled the legacy USB option and why would you run the RAM at 667 when it's designed to run at 1066MHz? Anyway i have tried doing as you suggested and one pair has passed without errors. But the 2nd pair 1 siick produces errors within 5 minutes and when the other stick is installed the system will not boot at any settings. So one of the sticks is dead as a dodo and the other is throwing up errors by itself and when paired with the working pair. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted May 27, 2009 Corsair Employees Share Posted May 27, 2009 Let's get them replaced, please use the On Line RMA Request Form and we will be happy to replace them. With 4 modules the memory frequency will need to be set lower and depending on the chipset and MB DDR667 or DDR800 would be required. Link to comment Share on other sites More sharing options...
Synthohol Posted May 28, 2009 Share Posted May 28, 2009 Originally Posted by main Corsair FAQ Q » I have two Corsair Memory modules that work fine together but when I added two more modules of the matching part number, they won’t work. A » We test these modules as they’re sold. In other words, a 2GB kit is tested only as a pair, not with two other modules. We’re not certain how two kits when put together will perform. While it is possible to get 2 separate kits working together, it will most likely require adjustments to be made in your BIOS to get the modules up and running. If possible, we suggest lowering your memory frequency and slightly increasing northbridge voltage. Please consult your motherboard manual for information on how to make these adjustments. If you’re not comfortable making these adjustments, or if the BIOS doesn’t allow for these adjustments to be made, you might want to consider our 4GB memory kits. Link to comment Share on other sites More sharing options...
Nismo122 Posted May 28, 2009 Author Share Posted May 28, 2009 Let's get them replaced, please use the On Line RMA Request Form and we will be happy to replace them. With 4 modules the memory frequency will need to be set lower and depending on the chipset and MB DDR667 or DDR800 would be required. Thanks for your help and now done :biggrin: Originally Posted by main Corsair FAQ Q » I have two Corsair Memory modules that work fine together but when I added two more modules of the matching part number, they won’t work. A » We test these modules as they’re sold. In other words, a 2GB kit is tested only as a pair, not with two other modules. We’re not certain how two kits when put together will perform. While it is possible to get 2 separate kits working together, it will most likely require adjustments to be made in your BIOS to get the modules up and running. If possible, we suggest lowering your memory frequency and slightly increasing northbridge voltage. Please consult your motherboard manual for information on how to make these adjustments. If you’re not comfortable making these adjustments, or if the BIOS doesn’t allow for these adjustments to be made, you might want to consider our 4GB memory kits. The thing is as stated one of the modules is refusing point blank to boot even with the settings suggested by RAM GUY and i have run memtest with the modules in pairs and in single modules. One pair are pefectly stable and have passed memtest with no errors, but as said i am having issues with the other set to the point the system will not even post. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted May 28, 2009 Corsair Employees Share Posted May 28, 2009 Lets get them replaced and see what happens. Link to comment Share on other sites More sharing options...
Synthohol Posted May 28, 2009 Share Posted May 28, 2009 understood. i was just answering your question as to why the speed has to be lowered to 800 or 667. good luck, my RMA only took like 9 or 10 days and the replacements are still going strong! Link to comment Share on other sites More sharing options...
Nismo122 Posted May 28, 2009 Author Share Posted May 28, 2009 Excellent chaps :biggrin: received email this evening confirming the RMA, cheers for the help and no BSOD tonight once since those 2 have been taken out. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted May 29, 2009 Corsair Employees Share Posted May 29, 2009 NP Please let us know when you get the new modules. Link to comment Share on other sites More sharing options...
Nismo122 Posted June 19, 2009 Author Share Posted June 19, 2009 Ok, RMA received a few days back :biggrin: what settings should i be running 4 modules at again? i know you said DDR2 776/800 but what about timings? also, what happens when it comes to overclocking the CPU is that not gonna give me an unstable sytem again? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted June 19, 2009 Corsair Employees Share Posted June 19, 2009 I would start with DDR667 and leave the timings at Auto and set the memory Voltage to 2.1 Volts. And use http://www.memtest.org to test the system and if you get errors set the NB/MCH/SPP Voltage to +.2 Volts If its stable at DDR667 then try them at DDR800. Link to comment Share on other sites More sharing options...
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