GameProgrammer Posted December 31, 2010 Share Posted December 31, 2010 Hello, I've purchased 2 * 4GB of CMX4GX3M1A1600C9 sticks, and using it on Gigabyte GA-880GM-UD2H rev 1.3 mother board. This board supports DDR3 1800+ memory sticks. Using default timings in bios, I can reach 1333MHz and the system runs really fine. However if I change the memory frequency to 1600MHz, using default timings/voltage settings in bios, I get a blue screen at Windows boot. So, I changed the timings in bios to 9-9-9-24 as per recomended settings, but still it dosent work. I might not be setting the timings correctly in bios. Could you please help me with the following 1> all the timing settings in bios for this memory card 2> voltage settings in bios (i am really afraid of doing it myself) I have also updated bios to latest F8. Many Thanks, GameProgrammer Link to comment Share on other sites More sharing options...
Wired Posted December 31, 2010 Share Posted December 31, 2010 It's never recommended to mix memory kits for multiple reasons, one of which you're running into right now. Link to comment Share on other sites More sharing options...
GameProgrammer Posted January 1, 2011 Author Share Posted January 1, 2011 I've not mixed memory kits. I am using exactly same memory sticks 2 * 4GB of CMX4GX3M1A1600C9 and installed into a Gigabyte Mother Board Gigabyte GA-880GM-UD2H rev 1.3 It is a brand new PC, with all very good quality components. Every thing works as per the specification except for Corsair RAM Please note, this is a AMD Phenome II X6 1090T build. The mother board supports 1800Mhz RAM. Also the 2 * 4GB of CMX4GX3M1A1600C9 work fine on 1333 MHz, but it doesnt work fine on 1600MHz I DONT think the RAM sticks are faulty as it works fine on 1333 MHz. I am missing some step in Bios configuration. Could you please point me to a guide on how to configure this RAM on a AMD board with Award BIOS? Link to comment Share on other sites More sharing options...
Wired Posted January 1, 2011 Share Posted January 1, 2011 Using two kits not tested together is considered mixing kits. You could be using different ICs in each kit without knowing it (look at the version number to determine the IC). Even if the labels were identical there's no guarantee they'd work together as they haven't been tested together. Add on to the fact that you're maxing out the slots and the memory controller, it's no surprise that you're only hitting 1333 MHz. Sidenote: CMX4GX3M1A1600C9 is not a valid part number for a 2 stick kit. Should be CMX4GX3M2A1600C9. Link to comment Share on other sites More sharing options...
GameProgrammer Posted January 1, 2011 Author Share Posted January 1, 2011 @Wired Yes, I bought two 4GB sticks. But I didnt know that they dont work together. If what you are saying is true, then with 1 stick I should be able to reach 1600Mhz. Let me try to do that and come back to you Link to comment Share on other sites More sharing options...
GameProgrammer Posted January 1, 2011 Author Share Posted January 1, 2011 I tried 1600MHz with one 4GB stick at a time. Non of the 2 sticks work at 1600MHz. Does that mean both the sticks are bad? I paid a premium for Corsair brand and that extra 1600 - 1333 = 267MHz is not worth it. Just to give you an idea, ********ron/Transend equivalent would be $40 less, Samsung/Dynet will be cheaper by $56 Why do I pay this extra when you guys use the same chips from these companies and run at a high frequency by adding a fancy heatsink Link to comment Share on other sites More sharing options...
killergg Posted May 11, 2011 Share Posted May 11, 2011 hi im using the same memory 2 4gb sticks cmx4gx3m1a1600c9 make sure you set the command rate timing to 2T otherwise it will bluescreen i had the same problem 9-9-9-24-41-2T V1.65 tCL 9 -tRCD 9 -tRP 9 -tRAS 24 -tRC 41 -CR 2T Voltige 1.65 KillerGG Link to comment Share on other sites More sharing options...
peanutz94 Posted May 12, 2011 Share Posted May 12, 2011 Test the two modules that wont hit 1600mhz one stick at a time using memtest. Make sure to punch in timings and voltages manually. The link is on the left side of the forums here. Also Make sure you disable USB legacy support in your BIOS before hand. If you dont it may trigger a false positive . Also disable any powersaving features so your CPU can run at full speed. Your problem with the RAM not running at 1600 and above with or without all four sticks is probably limited by your CPU and NOT the RAM. AMD CPU's only support RAM up to 1333. So if you get more than that out them , then it's a bonus. Just because the motherboard supports those speeds doesn't mean that your CPU will be able to run it . It has to do with the manufactures moving the memory controllers into the chips themselves and not on the motherboard like they used to be. Intel processors seem to handle the increased voltage neccessary to run the ram at higher than supported speeds than AMD procs do. If the memory fails any tests with memtest then post back with the results and im sure RamGuy will pick it up from there. It is very true that even though you bought two identical kits that there is a possibility that they wont work together. Ram now days is a lot trickier than it used to be. I my self learned that the hard way. You may get them to run stable with all four sticks but it may be at 1333mhz. Link to comment Share on other sites More sharing options...
killergg Posted May 12, 2011 Share Posted May 12, 2011 peanutz94 they are single 4gb stick hes got two of them so do i Link to comment Share on other sites More sharing options...
peanutz94 Posted May 12, 2011 Share Posted May 12, 2011 Sorry about that. I guess when Wired corrected the part number a few posts back, that threw me off. It would still be the same thing though. He bought the two sticks individually and not as a matched and tested set. So all of the above still applies. Just more so if it were all slots or just two. Link to comment Share on other sites More sharing options...
killergg Posted May 12, 2011 Share Posted May 12, 2011 ok peanutz np mate it sounded to me that everyone thought they where a match kit Link to comment Share on other sites More sharing options...
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