Irvida Posted October 13, 2008 Share Posted October 13, 2008 I have the same problem but with the 2gb sticks, I am running @ 3.8 Ghz with 1600Fsb (400*9.5 @1.28 vcore) running memtest says there is a hardware fault with the ram @1600Mhz but is fine at 1333mhz. Both settings only work in Vista with timings of 9-9-9-24. I had to set the Dram Volt to 1.9 to get vista to boot (Xp was fine at 1.8v) Vista just will not work with any latency lower than C9 even though these sticks are rated as C7 @ 1600mhz and has been fine in XP - no BSOD even playing crysis is fine. I believe this is a fault with the bios, I am running Asus p5q3 deluxe bios version 1103, I will try and update it tonight and see if 1306 makes a difference and report back. 1406 update wiped my bios clean :( time for Cmos clear Question, why does SiSoftSandra say "you do not have admisitrator privalges to run lock memory pages"? memtest fails on test 5/6 which is for large blocks I believe? Link to comment Share on other sites More sharing options...
crimsonchin Posted October 13, 2008 Share Posted October 13, 2008 does your RAM work at 1600 at C9? I haven't tried myself. Don't think it's bios though, pretty sure I'm on latest, and one stick worked on 1600 (xmp) before I had to rma the pair. Link to comment Share on other sites More sharing options...
Irvida Posted October 13, 2008 Author Share Posted October 13, 2008 does your RAM work at 1600 at C9? I haven't tried myself. Don't think it's bios though, pretty sure I'm on latest, and one stick worked on 1600 (xmp) before I had to rma the pair. It "works" but reports hardware errors when you run mem test. @C9 1600mhz I managed to run 3d Mark, +Sandra bandwidth tests so I thought my overclock was stable so went on to load World in confilict which Vista crashed straight to desktop, that's when I ran memtest. I am using 4*1gb stips in Vista memtest reports no errors at 1333 mhz so I dont think its the ram sticks but rather the bios? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 13, 2008 Corsair Employees Share Posted October 13, 2008 It "works" but reports hardware errors when you run mem test. @C9 1600mhz I managed to run 3d Mark, +Sandra bandwidth tests so I thought my overclock was stable so went on to load World in confilict which Vista crashed straight to desktop, that's when I ran memtest. I am using 4*1gb stips in Vista memtest reports no errors at 1333 mhz so I dont think its the ram sticks but rather the bios? I would test the modules one at a time in the slot furthest from the CPU, to see if you can isolate a single module that may be having problems running at 1600MHz. If you only have problems when running four modules, then you may be running into a limitation of the chipset. With four modules you may need to drop the memory frequency to 1333MHz, or try your luck at overclocking the board, to give you enough headroom to run all four modules at 1600MHz. Link to comment Share on other sites More sharing options...
Irvida Posted October 14, 2008 Author Share Posted October 14, 2008 I would test the modules one at a time in the slot furthest from the CPU, to see if you can isolate a single module that may be having problems running at 1600MHz. If you only have problems when running four modules, then you may be running into a limitation of the chipset. With four modules you may need to drop the memory frequency to 1333MHz, or try your luck at overclocking the board, to give you enough headroom to run all four modules at 1600MHz. after the bios update (1406) I have it running now with no errors at 1600Mhz but only at C9 and at 1.8v. Turning off the read / write training and enaling the mem O/C Charger was all that was needed. Ran out of time testing lastnight will try for C7 and see how I go. surely if these pass at 1333 and now at 1600 the ram sticks are not at fault? with defualt "Auto" settings they didnt work at 1600 nor with XMP enabled. I will try test this with the read / write training turned off, if this fails I will test the stick individually Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 14, 2008 Corsair Employees Share Posted October 14, 2008 I will try test this with the read / write training turned off, if this fails I will test the stick individually Let us know your results! Link to comment Share on other sites More sharing options...
Irvida Posted October 15, 2008 Author Share Posted October 15, 2008 Hi Ram Guy, I have tested both pairs of sticks in the Orange slots at C7 1600 Mhz with XMP profile and Manual timings (I used the same timings as XMP for all 3 timing settings) and all sticks are clear of errors. To make these sticks work at C7 1600 the mobo will only play if the read / write training is disabled and Mem OC Changer is enabled. Given this result and the fact the Mobo instructions say the blue slots dont O/C as well I put 2 sticks only in bank B (the blue sockets) and tested how far I could O/C this bank with C7 timings starting with the CPU at stock speed - this bank will only Overclock with the AI Clock Twister enabled (I found different frequencies need different settings here) + all the Dram enhancements need to be disabled. I got to 3.5Ghz @ 1481 Mhz (C7) anything higher than this starts to return errors in MemTest. After this, I stuck the other 2 sticks back in the orange slots and rebooted. Now I get memory errors again :( not sure what to do? I would have thought that if Orange slots are stable at 1600Mhz C7 and blue at 1481Mhz by adding sticks back in Orange I should have had a stable system at 3.5Ghz 1481Mhz C7 I am guessing this is a frequency problem with this mobo and these sticks? I wish I bought 2*2gb sticks now but couldn't afford to spend that much in one go :( Can / Will this issue be fixed by a future bios update or is this a problem with the mobo itself? For now I am going to have to stick to 1600Mhz @ C9 as this gives me the most bandwidth / CPU headroom. Any advice is appreciated Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 15, 2008 Corsair Employees Share Posted October 15, 2008 If you want to over clock the CPU past 400 MHz then you will have to lower the memory frequency to DDR1066 or DDr1333. Link to comment Share on other sites More sharing options...
DerekT Posted October 15, 2008 Share Posted October 15, 2008 Please research this thread: http://www.houseofhelp.com/v3/showthread.php?t=64360&highlight=Unpredictable+results+QUAD2X4096+Gigabyte+X38-DS5 The issue is the memory controller and a population of all four banks at the full speed of a two bank run. This issue is across the board with both Nvidia and Intel chipset based boards, DDR, DDR2 and DDR3. Keep in mind that often issues arise in the longer term. The issues seldom damage the DRAM. They damage the on motherboard memory controller which has a harder time keeping up with the demands of a four DRAM slot population being run as fast as a two DRAM slot population. Those who want to be secure in their system either purchase a single kit of the DRAM capacity that the four singles have or they move to a higher bandwidth DRAM and drop the bandwidth, which is what RAM GUY is advising. I also advise it as I have personally seen the issues that can and often do arise with a four DRAM slot population running at the full speed of a single kit speed. Link to comment Share on other sites More sharing options...
Irvida Posted October 17, 2008 Author Share Posted October 17, 2008 If you want to over clock the CPU past 400 MHz then you will have to lower the memory frequency to DDR1066 or DDr1333. I tried this lastnight, I set the multiplier to 8 with the ram at Cas7 then started cranking up the speed. I managed to get my PC fairly stable at 3.78Ghz / cpu fsb 472 with ddr @ 1551Mhz but had to increase the volts to the northbridge a lot. Running 3dmark I was getting device errors in realtion to Direct X and the screen going black but it didnt crash. I guess the northbridge is giving up again at this speed? the highest overclock I have managed so far is still at Cas9, 4.04Ghz with Ram at 1701Mhz I think this will go higher as I didnt touch the Northbridge voltage to achieve this. Link to comment Share on other sites More sharing options...
DerekT Posted October 17, 2008 Share Posted October 17, 2008 Sooner or later you will say bye bye to your Northbridge. Be ready for RMA of the mainboard. Link to comment Share on other sites More sharing options...
Irvida Posted October 17, 2008 Author Share Posted October 17, 2008 Sooner or later you will say bye bye to your Northbridge. Be ready for RMA of the mainboard. I should stop playing with it then ;) this was more a curiosity exercise to see how much bandwidth I could get. I'll leave it at more sensible settings its fast enough anyway :) Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 17, 2008 Corsair Employees Share Posted October 17, 2008 NP Please let us know how you make out! Link to comment Share on other sites More sharing options...
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