xsipower Posted February 5, 2013 Share Posted February 5, 2013 Well after using mixed sets of memory to try to get 24GB working on my Intel DX58OG motherboard, I finally got a beautiful set of Vengeance CMZ24GX3M6A1600C9, which I thought would solve my freezing issues. Nope, FREEZE FREEZE. (NOTE: with only 16GB installed - 4x 4GB - my computer never froze) I first installed them and reset my CMOS to default and ran everything at stock settings, voltage, and speed (1066). I ran memtest86 and it passed with no errors. Great. Then I booted into Windows 7 64bit Premium and ran Prime95 set to use 18GB memory. It ran for about 10 minutes and then FREEZE. So then I went back into the BIOS and set VDRAM to 1.6V. It wouldn’t post. I then incrementally increased DRAM/QPI until I hit 1.4V and each time it would not post. I then set VDRAM to 1.55V and DRAM/QPI to 1.25V and it posted. I ran Memtsest86 and once again after 7 minutes freeze. I then played around with various voltages 1.2 – 1.35 with QPI and always the freezes. Anything above 1.55V for VDRAM and the board would not post. That did not happen with my DOMINATOR memory. I then removed the last two Modules farthest from the CPU (16GB installed) and reset BIOS and then ran memtest86 (This is how I was running my mixed set of DOMINATOR 16GB memory for over a year with no freezes!). It ran for hours without problem. I then switched modules around and ran memtest and ran for hours. I then again installed all six modules reset BIOS again freeze. My BIOS has CPU voltage reg is set to tight regulation and I even increased CPU voltage to 1.35V and still the same freeze. Through all of these tests system temps under Prime95 never got above: CPU 65C, IOH 52C, VREG 48C. I have a Corsair 600W PSU. My CPU is a lowly i7 950 DO stepping. I am not an overclocker. So I searched on Google and found on Intel support that there were complaints of the DX58OG not working with 24GB memory. http://communities.intel.com/message/search.jspa?peopleEnabled=true&userID=&locale=en_US&q=DX58OG+24GB&login= http://communities.intel.com/thread/22275 http://communities.intel.com/thread/26962 Intel would tell people to use Kingston memory as approved by them. They had the same freeze issue after using the Intel approved memory. Also recommended was setting VDRAM to 1.6V which I can’t do with the CMZ24GX3M6A1600C9, but that would not solve their problem. One person had their board RMA’d and then new board worked. I am at the point where I think the problem is the Motherboard. The board is no longer made so no RMA for it. If anyone has any other input that I can try before I settle with only installing 4 sticks and not all six, please let me know. Thank you Link to comment Share on other sites More sharing options...
peanutz94 Posted February 5, 2013 Share Posted February 5, 2013 Intel would tell people to use Kingston memory as approved by them. They had the same freeze issue after using the Intel approved memory. Also recommended was setting VDRAM to 1.6V which I can’t do with the CMZ24GX3M6A1600C9, but that would not solve their problem. One person had their board RMA’d and then new board worked. I am at the point where I think the problem is the Motherboard. The board is no longer made so no RMA for it. You sure can set it to 1.65v. It's not going to hurt thememory if thats what your concerned about. I would try with 1.65v and you can go as high as 1.45v with the QPIv. I would give that a try first. Link to comment Share on other sites More sharing options...
xsipower Posted February 5, 2013 Author Share Posted February 5, 2013 As I stated in my post "Anything above 1.55V for VDRAM and the board would not post. That did not happen with my DOMINATOR memory." Anything at or below DRAM 1.55V and the board would post. That I can't explain. Link to comment Share on other sites More sharing options...
xsipower Posted February 5, 2013 Author Share Posted February 5, 2013 I was able to go above 1.55V DRAM after I put QPI to 1.45V. I was able to go as high as 1.60V. I then ran Prime95 and it ran for 12 minutes and then froze. I removed the two modules farthest from the CPU and not only does it run stable at stock voltages, but I even set the memory to XMP-1666 with VRAM at 1.5 and QPI at 1.2 and have been running Prime95 for 30 minutes so far. It wouldn't even post with XMP-1666 with all sticks installed and VRAM at 1.6V and QPI 1.45V I think either the motherboard is faulty, poorly designed or the CPU is buggy. Link to comment Share on other sites More sharing options...
xsipower Posted February 6, 2013 Author Share Posted February 6, 2013 I spoke with my system builder and they will take the computer and have the motherboard replaced under waranty. Wish me luck. Link to comment Share on other sites More sharing options...
Turbonerfs101e Posted February 6, 2013 Share Posted February 6, 2013 I spoke with my system builder and they will take the computer and have the motherboard replaced under waranty. Wish me luck. Hi xsipower Did you check firft if your moterboard bios is up to date ? As it improve compatibility and stabiity ove system Last bios version is 0888 http://downloadcenter.intel.com/SearchResult.aspx?lang=eng Hope this help Sincerly yours Link to comment Share on other sites More sharing options...
xsipower Posted April 5, 2013 Author Share Posted April 5, 2013 Well I had my computer at my system builder and after 1 month they could not get the 24GB CMZ24GX3M6A1600C9 to work. The BIOS was the latest. They got a new Intel DX58OG mother board and that didn't work. They got a new i950 CPU and that didn't work. They even put in a larger 700W power supply and that didn't work. These test were all at 1066Mhz. At this time I am running 16GB (4x4GB) in dual channel mode at 1600Mhz XMP with stock voltages and it runs stable. I have looked at so many forums dealing with the x58 and it seems that using 24GB is a hit and miss with any mother board manufacturer. What some seem to think is that the issue is actually with the CPU. The higher you go with in the i7 9XX line, the better chance you have with getting 24GB to work. Almost everyone can get the i7 990x to run at 24GB at 1600. My i7 950 is just a wimp, and unable to run 6 sticks. I personally think the x58 series was marginal above 12GB and that's why Intel quickly went away from triple channel x58 chipset. If anyone has anything to add that might make my system work, please let me know. Thanks xsipower Link to comment Share on other sites More sharing options...
peanutz94 Posted April 5, 2013 Share Posted April 5, 2013 Well, the 950 were not known to be the best overclockers and usually had a weak memory controller. But it is possible it's the CPU.... But i still think this is a board issue. Partly because of your description and partly my own experience with the X58 systems. My current is a 920 and I have never had an issue running 24gigs at 1600mhz with a 4.5GHZ CPU OC. BUT It took threee RMA's for the MB to get one that would. The one would not detect the third stick. The second would run at 1600mhz but sometime would only detect half of the memory . The third has run all 24 gigs at rated speed for almost three years now. What some seem to think is that the issue is actually with the CPU. The higher you go with in the i7 9XX line, the better chance you have with getting 24GB to work. Almost everyone can get the i7 990x to run at 24GB at 1600. My i7 950 is just a wimp, and unable to run 6 sticks. They all had the same basic memory controller. Besides a higher clock speed and slightly different bells and whistles there wasn't much difference between them. Some were just weaker than others in the memory controller area for what ever reason.. Link to comment Share on other sites More sharing options...
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