Distress Posted November 22, 2009 Share Posted November 22, 2009 Motherboard is Gigabyte P55A-UD4P running latest BIOS with i860 - ram runs at default speed of 1333 no issues. Setting memory profile to XMP to get the rated speed (1600) makes computer freeze within 30 min. Did a memtest for almost 12 hours on XMP setting without any errors. Yet Prime95 freezes on blend test roughly an hour into it. Computer is running at stock speeds - all that's being changed is ram being set to rated speed. Checked voltage when ram is set to XMP and it reports 1.65 - setting it manually doesn't help either. Link to comment Share on other sites More sharing options...
Bobby Bec Posted November 22, 2009 Share Posted November 22, 2009 I'm having exactly the same problem with CMD4GX3M2A1600C8. I have Asus P7P55D Pro with latest bios and i860. So far i did try everything you guys recommended here in the forums but nothing helped me. Some times also freeze at 1333 in windows and the only difference is that it is just very rare. I did try to change settings manually but still freeze. I also razed IMC to 1.4-1.45 and still same freeze. I also was able to find another PSU and test but the result was the same. So now after 3 weeks of testing back and forth basically i do not have working PC and i don't know what to do. Link to comment Share on other sites More sharing options...
Mlewis38 Posted November 22, 2009 Share Posted November 22, 2009 Yes i have the same exact problem. I has a Asus Maximus III i7 860. Only way this ram will run is at 1333Mhz. Anything Else Freezes with in 30 mins too. Link to comment Share on other sites More sharing options...
Distress Posted November 22, 2009 Author Share Posted November 22, 2009 I did bit more extensive testing, out of 4 stick of ram I have (testing one by one) - 2 hang system on Windows load or within 10 seconds of getting into Windows, other 2 hold up about an hour before failing from Prime95 blend test. Then the 2 that hold up individually hold up about same time when paired. End result is inability to hold 1600 (XMP) in any scenario. It's bit worrying seeing more people with identical issues to be honest. I don't want to jump to conclusions but would be great to hear some official input. Taking RMA route seams logical at this time just don't want same problem resurfacing on the new kit. Link to comment Share on other sites More sharing options...
Mlewis38 Posted November 23, 2009 Share Posted November 23, 2009 got my RMA on the way. Link to comment Share on other sites More sharing options...
nunoleite46 Posted December 4, 2009 Share Posted December 4, 2009 Hello i have the same problem CMD8GX3M4A1600C8 on Asus Maximus III Formula i7 860, any solution??? Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted December 4, 2009 Corsair Employee Share Posted December 4, 2009 With CMD8GX3M4A1600C8 all you should have to do is load setup defaults with the latest BIOS version installed and then set or enable XMP to profile one then I would disable legacy USB and test with http://www.memtest.org Link to comment Share on other sites More sharing options...
Yellowbeard Posted December 4, 2009 Share Posted December 4, 2009 Please post CPU-Z screen shots of your SPD tabs. Link to comment Share on other sites More sharing options...
nunoleite46 Posted December 7, 2009 Share Posted December 7, 2009 Have anyone found solution to this problem? It happens to me exactly the same. I have the kit CMD8GX3M4A1600C8 with an Asus Maximus Formula III @ i7 860, Using X.M.P. without changing anything else, the computer locks. Already changed the IMC and DDR Voltage, and nothing! AUTO values run @ 1333 fine. Link to comment Share on other sites More sharing options...
Wired Posted December 7, 2009 Share Posted December 7, 2009 Please respond to Yellowbeard's request. Link to comment Share on other sites More sharing options...
Kariddi Posted December 7, 2009 Share Posted December 7, 2009 Just to give you a feed back, I also have problems with these rams (but the 4GB version) on a Gigabyte P55 mobo. Running at 1600 Mhz (XMP)means instant BSOD at boot. Running at 1333 Mhz (SPD)means booting fine into Windows, but Prime95 blend test will fail in just few minutes. Running at 1066 Mhz (SPD)runs fine. The strange thing is that Memtest86+ can't find any error at any speed. I tried running it for 9 hours fine at 1600 Mhz, but trying to boot Windows gives immediatly a BSOD. A friend borrowed me his DDR3 ram (different brand) and runs fine up to 1800 Mhz, so I don't think is a problem of a faulty IMC or motherboard This is my experience if this can help you somehow, maybe some p55 motherboards have some problems with these RAMs, I'm still hoping for a BIOS update that will solve the problem. I already informed gigabyte of the problem Link to comment Share on other sites More sharing options...
Bobby Bec Posted December 7, 2009 Share Posted December 7, 2009 I still can't get my CMD4GX3M2A1600C8 to work stable at 1600Mhz. Not to mention that my pc freeze randomly every 2 days at 1333Mhz as well . I have random freezes when I'm gaming or just browsing etc . As i said before i tested with different PSU and already have the latest bios for my MB which is Asus P7P55D Pro I did try to set settings manually and raise IMC but this didn't help me to. I ran Memtest86+ V4.00 with one module at a time and didn't get any errors. However i noticed that with XMP enable one of the modules freeze after 30 min gaming but the other one is working without problems for 5 days which for me indicates that maybe this is memory issue. So maybe its time to request RMA ? Link to comment Share on other sites More sharing options...
Yellowbeard Posted December 8, 2009 Share Posted December 8, 2009 FOR ANYONE POSTING IN THIS THREAD Please post CPU-Z screen shots of your SPD tabs. There are at least 4 different MOBO + RAM combinations listed in this thread and it is extremely difficult to help any 1 person. People that do not have the EXACT same hardware as the original poster, please start your own thread. Link to comment Share on other sites More sharing options...
nunoleite46 Posted December 8, 2009 Share Posted December 8, 2009 CPUZ my cpu: http://img192.imageshack.us/img192/2815/cpuwi.jpg my SPD tab: http://img207.imageshack.us/img207/2316/spdl.jpg Thanks Link to comment Share on other sites More sharing options...
Corsair Employee RAM GUY Posted December 8, 2009 Corsair Employee Share Posted December 8, 2009 Please post a screen shot of the all of the second modules SPD Tab (slots 1, 2, 3, and 4) as well. Link to comment Share on other sites More sharing options...
nunoleite46 Posted December 9, 2009 Share Posted December 9, 2009 Please post a screen shot of the all of the second modules SPD Tab (slots 1, 2, 3, and 4) as well. All slots same info, nothing change! thanks http://img207.imageshack.us/img207/2316/spdl.jpg Link to comment Share on other sites More sharing options...
nunoleite46 Posted December 11, 2009 Share Posted December 11, 2009 need help please! What should I do? send to rma my CMD8GX3M4A1600C8?? Im just using Bios defalts and activate XMP, in games after 30min pc crash. Link to comment Share on other sites More sharing options...
holle8477 Posted December 11, 2009 Share Posted December 11, 2009 Yes i have the same exact problem. with 2 stick of ram it works perfect. with 4 stick of ram after 10 mins sytem stops. memtest is ok. Link to comment Share on other sites More sharing options...
nunoleite46 Posted December 16, 2009 Share Posted December 16, 2009 no solution 4 this problem?? should i send to RMA??? Link to comment Share on other sites More sharing options...
Wired Posted December 16, 2009 Share Posted December 16, 2009 Request an RMA Link to comment Share on other sites More sharing options...
nunoleite46 Posted December 21, 2009 Share Posted December 21, 2009 I'm having exactly the same problem with CMD4GX3M2A1600C8. I have Asus P7P55D Pro with latest bios and i860. So far i did try everything you guys recommended here in the forums but nothing helped me. Some times also freeze at 1333 in windows and the only difference is that it is just very rare. I did try to change settings manually but still freeze. I also razed IMC to 1.4-1.45 and still same freeze. I also was able to find another PSU and test but the result was the same. So now after 3 weeks of testing back and forth basically i do not have working PC and i don't know what to do. you find a solution? Link to comment Share on other sites More sharing options...
Bobby Bec Posted December 24, 2009 Share Posted December 24, 2009 no, no solution for me yet :( Link to comment Share on other sites More sharing options...
nunoleite46 Posted December 29, 2009 Share Posted December 29, 2009 I sent today to my kit to RMA, I hope to receive soon the memories, this time without problems. Now i have some memories temporarily OEM 2x1GB DDR3 1333mhz 8-8-8-24, in BIOS i select Memory Level Up to: 1600MHz, and works without problem with 9-9-9-24 1T timings. (by bios defaults) If they do this, these corsair should do much more, I hope! Link to comment Share on other sites More sharing options...
stevevnicks Posted January 9, 2010 Share Posted January 9, 2010 hello , i had problems with xms3 1600 kit, although i was trying to run 8gig two 4gig paks which if bought at the same time theres a good chance the kits have the same ic's so should work ok , anyway cut long story short try this : (this worked with the Asus 7p755d motherboard) set xmp in bios change IMC voltage to 1.2500volts i would think setting a 1.45volt for imc is way to high if its the i3/i5/i7 range cpu's and probs would lead to problems it worked for 2 packs of 4gigs ddr3 1600 xms3 the xmp default was 1.115volt for imc, it might help with your satbility problems as it helped keep 8gig stable. Link to comment Share on other sites More sharing options...
nunoleite46 Posted January 10, 2010 Share Posted January 10, 2010 hum I liked that this was the solution, but I have memories in RMA, I hope to receive new ones, I hope dont have this problem no more. question: XMS3 1600 have the same chips the dominator 1600 CL8 (micron chips)? thanks for help Link to comment Share on other sites More sharing options...
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