1 2 Previous Next 17 Replies Latest reply on Mar 16, 2011 1:16 PM by fgaullier

    DX58SO2 memory speed issue

    fgaullier

      I just set up a DX58SO2 mother board with a i7 960. I spent quite a bit of money on the RAM buying Kingston HyperX memory (KHX2000C9AD3T1K3/6GX) wich should run around 2000MHz. In the Intel desktop Utility they show up at 1067MHz !! not even 1333 MHz that I had with standard RAM!

      Here is a snapshot of the Intel Extreme Tuning Utility:

      IETU snapshot.GIF

       

       

       

      I am not looking at overclocking like crasy, but I would like to have my expensive memory run at the right speed.

       

      I must admit that I am not an expert with all these hardware parameters, am I missing something? what do I need to tweak to have the memory run at a higher speed? while the system reliable.

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

       

      I have an other issue with the board, regarding the Marvel RAID on the blue SATA port running at 6GB, but I'll use an other message for that.

       

       

       

       

       

       

       

      thanks for any help.

       

      Francois,

        • 1. Re: DX58SO2 memory speed issue
          Gusfmm

          Francois,

           

          We both posted at the same time, I'm having that exact same issue with Patriot PX7312G2000ELK triple channel memory. I did try the Intel XMP profile in BIOS, but it did not go well. So I'm back to running at the 1Mhz mark, as you described...

           

          Try going into the BIOS and picking the auto XMP profile to see if you have better luck than I.

          • 2. Re: DX58SO2 memory speed issue
            fgaullier

            Gusfmm,

             

            It's good to know that you are not the only one, but that does not solve the issue. I might contact Intel support, and will post anything I get from them.

             

            Francois.

            • 3. Re: DX58SO2 memory speed issue
              Gusfmm

              Did you try going back into the BIOS and selecting the default XMP profile?

              • 4. Re: DX58SO2 memory speed issue
                levicki

                You need to change memory and uncore multiplier to be able to run memory at any speed above 1066MHz. You can Google for "overclocking howto" and I am sure you will find a plenty of articles.

                • 5. Re: DX58SO2 memory speed issue
                  Sunfox

                  Best I can offer is I'm using 2 x Kingston HyperX KHX1600C7D3K3/6GX with their 1600 XMP profile, and it seems to be working OK so far. I had some initial "oddness", but that seems to have been related to older BIOS and/or a defective/incompatible PCIe 1x card I had.

                  • 6. Re: DX58SO2 memory speed issue
                    fgaullier

                    Hello,

                     

                    Thanks for the various answers and suggestions. Kingston is telling me, that these RAMs are not supported on the DX58SO2 ! So it looks like I am out of luck, and spent a lot of money for nothing. It is not clear on their web site that it does not work on that board, but it is taht way.

                     

                    To keep you posted on what I did... I tried the various profile in the BIOS, and the system hang during the POST, have to force power off, and force BIOS setup to get out. The only configuration that works fine is the 1067MHz (ValuRam at half or a third of that price will work just fine!).

                    I do not want to go the overclocking route, or fiddle around with all these parameters. I am relying on this system, and need it to be very stable.

                     

                    Conclusion: do not use these RAMs on this board!!

                    Thanks to all of you,

                     

                    Francois.

                    • 7. Re: DX58SO2 memory speed issue
                      fgaullier

                      Sunfox, just adding a small not here. You are lucky, because these RALs are not supposed to work on that board, the higher speed that Kingston offers on this board is the 1333MHz!

                       

                      Francois.

                      • 8. Re: DX58SO2 memory speed issue
                        Sunfox

                        Actually I must backtrack - turns out I'm not stable at 1600... after a couple random crashes, I discovered I'm getting rounding errors in Prime95.

                         

                        The memory I have is supposed to be 1600 7-8-7-20 2T @ 1.65V. These are probably the same chips as in your 2000... considering they sell CL7, CL8 and CL9 at 1600MHz.

                        It works fine if I set it to auto, which results in 1333 9-9-9-27 @ 1.5V.

                         

                        I've contacted Kingston for support. Note that I did confirm with them that this memory would work correctly with this board, in 12GB configurations. Perhaps they were wrong.

                         

                        Hoping there's a compromise setting to get 1600 working.... like 1600 8-8-8-24 or something. I'll try some stuff out later tonight if I don't hear from them.

                        • 9. Re: DX58SO2 memory speed issue
                          Sunfox

                          http://www.ec.kingston.com/ecom/hyperx_us/modelsinfo.asp?SysID=68380

                           

                          They do qualify some 1600MHz modules. However as mentioned I emailed them specifically about the ones I puchased.

                          • 10. Re: DX58SO2 memory speed issue
                            fgaullier

                            yes, Kingston send me that same page on their site. But all the 1600 modules are 2 ways, not 3 ways like we need on that board. So if you go by the book, your modules do not seem to be supported.

                            The issue is the 'wanna go faster' at the bottom of that page that lead you to a buch of expensive RAMs that are not supported !! that really misleading! that's how I got to buy those module that are not supported, and I have 12GB total! I am quite upset, I must say.

                             

                            Francois.

                            • 11. Re: DX58SO2 memory speed issue
                              Sunfox

                              So far I have tested 12 hours stable at the following settings (1333MHz):

                               

                              Uncore Multiplier20
                              Memory Multiplier10
                              tCL9
                              tRCD9
                              tRP9
                              tRASmin24
                              tRFC74
                              tRRD4
                              tWR10
                              tWTR5
                              tRTP5
                              tRC32
                              tFAW20
                              Memory Voltage1.5125
                              QPI Voltage1.225
                              Command RateAuto

                               

                              And I have tested 4 hours stable with these settings (1600MHz):

                               

                              Uncore Multiplier18
                              Memory Multiplier12
                              tCL9
                              tRCD9
                              tRP9
                              tRASmin24
                              tRFC80
                              tRRD5
                              tWR12
                              tWTR6
                              tRTP6
                              tRC36
                              tFAW24
                              Memory Voltage1.6
                              QPI Voltage1.225
                              Command RateAuto

                               

                              These are just based on the SPD/XMP profiles and my tweaking. Haven't heard back from Kingston yet (wish they had a user forum).

                              • 12. Re: DX58SO2 memory speed issue
                                fgaullier

                                Sunfox,

                                 

                                Thanks for these settings, I will try to have them 'verified' by Kingston, if I can get them to answer my mail, and will let you know.

                                I am puzle, that the uncore multiplier is higher at 1333 than at 1600? or is it a typing mistake? I thought thse multiplier (uncore and memory) where going the same way.

                                I'll keep you posted,

                                Francois

                                • 13. Re: DX58SO2 memory speed issue
                                  Sunfox

                                  That uncore setting got me curious as well - those are accurate, and were the automatic settings for 1333 (2667 uncore) and 1600 (2400 uncore).

                                   

                                  I did a bunch of reading on that, and apparantly with the 970 (? forget exactly) and higher it's only necessary to keep uncore at 1.5 times memory speed (lower i7 chips have to be kept at 2 times memory speed). The BIOS has a note on this. A few forum postings seem to recommend 980X owners use 18X, 20X or 22X for 1600MHz memory. I may try 20X after everything else is stable, but the advantage to running lower uncore speed is the board can use lower voltages, and raising it apparantly doesn't add any much if any performance advantage.

                                   

                                  So far I've been trying numerous settings combinations. What's odd is this is unstable after 2 minutes of testing:

                                   

                                  Uncore Multiplier18
                                  Memory Multiplier12
                                  tCL8
                                  tRCD8
                                  tRP8
                                  tRASmin24
                                  tRFC88
                                  tRRD5
                                  tWR12
                                  tWTR6
                                  tRTP6
                                  tRC36
                                  tFAW24
                                  Memory Voltage1.65
                                  QPI Voltage1.225
                                  Command RateAuto

                                   

                                  But this has been stable for the past two hours of Prime95 stress testing:

                                   

                                  Uncore Multiplier18
                                  Memory Multiplier12
                                  tCL9
                                  tRCD9
                                  tRP9
                                  tRASmin24
                                  tRFC88
                                  tRRD5
                                  tWR12
                                  tWTR6
                                  tRTP6
                                  tRC36
                                  tFAW24
                                  Memory Voltage1.5125
                                  QPI Voltage1.225
                                  Command RateAuto

                                   

                                  Note the extra low voltage. I can't quite figure out why 9-9-9 @ 1.5125V is perfectly stable, but the exact same settings with 8-8-8 @ 1.65V is unstable. I'm hoping Kingston can figure out some tweaking of the other settings (tRFC all the way down to tFAW) that will allow CL8 to work.

                                  • 14. Re: DX58SO2 memory speed issue
                                    Sunfox

                                    Well, the best I can figure out so far is that these modules really don't want to run at 1600Mhz faster than CL9 when there's six of them in this board. I've had some initial success running CL7 with just 3 modules (didn't test extensively however it didn't bomb out in Prime95 within the normal amount of time that 12GB does).

                                     

                                    Suspiciously, Kingston doesn't even offer faster than CL9 in their stock 6 x 2GB kits. Which is why I emailed them first to see if this would work. I'm beginning to think it won't - at least not any better than the CL9 I have them working at now.

                                     

                                    I mean the real-world practical difference between CL7/CL8/CL9 is minimal, but the annoyance here is I was told by Kingston that it would work, I have spent _countless_ hours trying to figure out why it isn't working and what might work, and Kingston's tech support has been very unhelpful.

                                     

                                    The initial response was to try the kits 1 at a time and use Memtest86+ to check if the modules were defective (they seem to work fine 3 at a time), the second response was that if they weren't obviously defective to contact Intel for help. I haven't even had a response to my third message where I requested (for the second time) suggested timings to try at CL8 and CL9. Kingston does not publish *complete* timings for their modules, and all I can extract from the modules themselves is what they use for 1333MHz CL9 and 1600MHz CL7. What I wanted was correct tRFC, tRRD, tWR, tWTR, tRTP, tRC & tFAW values for use with these at CL8 and CL9, or for them to at least confirm what what I was using was correct. Google searches show that these can vary wildly depending on the chips used.

                                     

                                    Hopefully my 4th message where I detail everything I've tested lately warrants a response.

                                     

                                    If I wanted CL9 I could have spent $90 less...

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