killy3000 Posted August 23, 2009 Share Posted August 23, 2009 Hi there, I have just completed the build of a new system. Once i had finished putting it all together, I started windows and ran a Prime95 test. At this point, all of the settings in the BIOS were at their default level (i.e. no overclocking) and the blended test ran fine for around 3 hours at which point i ended it. I then noticed that CPU-Z showed that the DRAM frequency was only circa 532mhz rather than 800mhz so i found Ram Guy's post "Core I7 MB Settings By X58 MB!" in the memory compatibility forum and input the relevant settings exactly as shown in his post, leaving everything else in the bios at the default settings. When i rebooted, the DRAM frequency showed at 800mhz in CPU-Z so i kicked off another blended test in prime 95. Within less than a minute, one of the 8 'workers' failed and within the next couple of minutes another 3 failed also. I have repeated the test several times and get similar results each time although there isnt any pattern as to which cores/threads fail, it seems to be different each time. If i return all of the settings to the default level, the tests all work fine but the DRAM frequency returns to 532mhz. I would appreciate any assistance you could provide on this issue as I am keen to get on with overclocking my cpu but i suspect I should make sure that the system is stable at stock levels before pushing it any further. Many thanks, Andy Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted August 24, 2009 Corsair Employees Share Posted August 24, 2009 What core of CPU do you have and please check that you have the latest BIOS version then load setup defaults and enable XMP Profile one and exit the BIOS and then run the test again. Link to comment Share on other sites More sharing options...
Wired Posted August 25, 2009 Share Posted August 25, 2009 I think he's asking what revision your CPU is (C0 / D1). Otherwise the CPU is in his specs :) Link to comment Share on other sites More sharing options...
killy3000 Posted August 25, 2009 Author Share Posted August 25, 2009 Hi, thanks for the replies. The CPU is an i7 920 D0 and I am already on the latest version of the bios. I am at work at the moment so I will try what you recommended later re: the XMP profile when i get home and will report back the results. I have done the following additional testing since my original post: (i) I ran memtest for about 18 hours with no errors with the memory running at 1600mhz. I used the settings from Ramguys post as referenced in my original posting above. (ii) I ran the Prime 95 blended test a few more times after the memtest and had exactly the same issues as noted in my original post (iii) I started the "small fft" test on prime 95 last night at around midnight and it was still running this morning without any errors 8 hours later. I have left this running while i am at work so by the time i get home it will have been going for around 18 hours or so. I will post the results of this also when i get home tonight. Link to comment Share on other sites More sharing options...
killy3000 Posted August 25, 2009 Author Share Posted August 25, 2009 Testing update: When i got home, the Prime95 small fft test had been running for over 19 hours with no errors at all. I reset the system, restored the bios defaults and enabled the xmp profile 1 and then restarted. I ran the prime95 "large fft" test which tests some memory and it failed after 8 minutes. I reran it a few more times with similar results. I then ran the "blended test" which tests lots of RAM and it failed within 2 minutes. Again, I reran the test a few more times with similar results. Any thoughts? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted August 25, 2009 Corsair Employees Share Posted August 25, 2009 Please check what it is setting the QPI Voltage to when XMP is enabled, from what I have seen the (D0) Stepping CPU's do not run well with high QPI Voltage. Link to comment Share on other sites More sharing options...
killy3000 Posted August 25, 2009 Author Share Posted August 25, 2009 QPI voltage = 1.35 Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted August 26, 2009 Corsair Employees Share Posted August 26, 2009 Try it set to 1.4 or 1.5 Volts if you have a (C0) stepping CPU if its a (D0) trhen don't go aver 1.45 Volts. Link to comment Share on other sites More sharing options...
killy3000 Posted August 26, 2009 Author Share Posted August 26, 2009 Hi there, thanks for all the suggestions so far but i am afraid i'm still having problems. I tried setting the QPI to 1.4 and each time i ran the blended fft test it failed within 2 minutes. I then upped the qpi to 1.45 and the test also failed within 2 minutes. I ran the tests 5-6 times at each of the voltage levels with the same results every time. I didn't raise the voltage any further as i have a D0 stepping cpu. Link to comment Share on other sites More sharing options...
killy3000 Posted August 27, 2009 Author Share Posted August 27, 2009 Any further thoughts anybody? Do the results of the tests indicate a problem with the RAM and should i therefore return it and get it changed for a new set? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted August 27, 2009 Corsair Employees Share Posted August 27, 2009 Do you have the latest BIOS version and did you try testing the modules one at a time to make sure one was not failing? Link to comment Share on other sites More sharing options...
killy3000 Posted August 28, 2009 Author Share Posted August 28, 2009 I believe i do have the latest bios. The version i am running is "0504" and it is the latest version offered by the AsusUpdate software. I did some more testing of single sticks and can report the following: Stick 1 only - test failed repeatedly within a couple of minutes Stick 2 only - ran the test for 1 hour with no errors. Test was stopped manually by me. Stick 3 only - ran the test for 1 hour with no errors. Test was stopped manually by me. Link to comment Share on other sites More sharing options...
killy3000 Posted August 28, 2009 Author Share Posted August 28, 2009 Further testing update. I tried testing 2 sticks at once and can report the following: Stick 1 & Stick 2 - test failed repeatedly within a couple of minutes Stick 2 & Stick 3 - ran the test for 7 hours with no errors. Test was stopped manually by me. Stick 1 & Stick 3 - not tested yet as i had to go to work. Will test later today when i get home. Link to comment Share on other sites More sharing options...
killy3000 Posted August 28, 2009 Author Share Posted August 28, 2009 I just tested stick 1 stick 3 together and the test failed within a minute or so. I ran the test several times with the same result. In summary then, the single and dual stick tests that exclude stick 1 all ran without error. The single dual and triple stick tests that include stick 1 all presented errors within a short time of commencing the testing. Is it a safe conclusion based on the results of the testing performed that there is an issue with stick 1? It seems logical to me but I'm not exactly a RAM expert! Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted August 28, 2009 Corsair Employees Share Posted August 28, 2009 Let's get them replaced, please use the On Line RMA Request Form and we will be happy to replace them. Link to comment Share on other sites More sharing options...
killy3000 Posted August 30, 2009 Author Share Posted August 30, 2009 Will do, thanks for all of your help. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted September 1, 2009 Corsair Employees Share Posted September 1, 2009 NP Please let me know if you have any more questions! Link to comment Share on other sites More sharing options...
killersjp Posted September 2, 2009 Share Posted September 2, 2009 before you send them for replacement set qpi to 1.28. mine was set to high, and this setting was stable. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted September 3, 2009 Corsair Employees Share Posted September 3, 2009 And please let us know if that works for you. Link to comment Share on other sites More sharing options...
killy3000 Posted September 18, 2009 Author Share Posted September 18, 2009 Hi there, apologies but it was too late to try your latest solution as i had already RMA'd the RAM. The replacement arrived today and it seems to have solved the problem :) Many thanks for all the help, it was much appreciated. Andy Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted September 18, 2009 Corsair Employees Share Posted September 18, 2009 NP Thanks for letting us know! Link to comment Share on other sites More sharing options...
Recommended Posts
Archived
This topic is now archived and is closed to further replies.