jcrsairusr88 Posted February 2, 2008 Share Posted February 2, 2008 Hello. System specs summary: ASUS P5K-E/WIFI-AP Rev 1.xx BIOS 0906 Core 2 Duo E6750 @ 2.66 GHz (defaults) TWIN2X2048-6400 - 2 x 1 GB CM2X1024-6400 (XMS2-6400C5) Corsair memory modules in symmetric dual channel mode. (Using m/b defaults for DDR2-667). Even though the system boots and seems to run fine at DDR2-800 with stock auto M/B settings when Memtest86 v3.4 is run I get a strange failure (so I am running at DDR2-667 for now). I have gone over many posts and internet searches but so far cannot seem to find anyone reporting the same problem. When set for DDR2-800 using M/B's stock settings CPU-Z shows: DRAM Freq 400.8 MHz,FSB:DRAM 5:6, 5-5-5-18 2T. Memtest86 v3.4 reports an error during the first execution of test #3 at 13% completion of the test as follows: Error Confidence value: 27 Lowest Error Address: 00000004004 - 0.2MB Highest Error Address: 0007ff8deff - 2047.8MB Bits in Error Mask: 44cb44eb Bits in Error - Total: 15, Min:1 Max: 13 Avg: 4 Max Contiguous Errors: 1 ECC Correctable Errors: Errors per memory slot: 0:2 1:1 and the error counter for test #3 at the right of the screen spins endlessly (values spin from 0 to 32767) - I must hit the reset button to reboot. The fact that MemTest freezes like this makes me uncertain if it is a true error or not. The memory is currently stable at DDR2-667 auto (runs fine, Memtest86 and Prime95 go for long periods with no errors). CPU-Z shows: DRAM Freq 334.0 Mhz, FSB:DRAM 1:1, 5-5-5-15 2T. System temperatures seem fine too - idle 25C CPU, 27C MB, load 42C CPU, 33C MB. I have tried many different auto/manual settings, (manual 1.8v or 1.9v memory voltage, highest possible latency settings in BIOS, disabling legacy USB support, a 266Mhz FSB and multiplier for DDR2-800) but the result was always the same. I believe the manual voltage sometimes allowed 14% on test #3 but the display values for the error were pretty much the same. I thought perhaps the reported 0.1v vcore issue for recent p5k-e bios might be affecting memory voltages, but I have not seen any reports of such. I have not looked at the northbridge voltage but with only 2 memory modules involved would that even be a possibility ? Does anyone have any suggestions on anything else I should look into to get this memory working without memtest errors at its stock DDR2-800 rating on the P5K-E-WIFI-AP ? Should I try a different memory testing application ? Is this just a case of the motherboard/memory being unhappy with each other at that clock (since 667 gives no errors) or is it a problem with one or both DDR2 modules ? My concern is that trying to return the memory to the system builder may not solve the problem (i.e. I may need a different kind of DDR2 RAM - perhaps from the QVL list). Any ideas would be welcome (or any reports of people using this memory on the P5K-E-WIFI at DDR2-800 successfully and their settings). Thanks, J. Link to comment Share on other sites More sharing options...
DerekT Posted February 2, 2008 Share Posted February 2, 2008 I would enter the BIOS and set Legacy USB to disabled. Make sure you use the Memtest 86+ V1.7 from http://www.memtest.org. Sometimes the board undervolts the DRAM a bit, so I would incrementally raise the DRAM Voltage (Vdimm) and the Memory Controller Hub (MCH/Northbridge). AI Overclocking: Manual CPU Ratio Control: Auto FSB Frequency: 266 PCI-E Frequency: 100 DRAM Command Rate: 2T DRAM Frequency: 800 FSB Strap to Northbridge: 333 DRAM Timing Control: Manual CAS# Latency: 5 RAS# to CAS# Delay: 5 RAS# Precharge: 5 RAS# Activate to Precharge: 15 TWR: Auto TRFC: Auto TWTR: Auto TRRD: Auto TRTP: Auto DRAM Static Read Control: Disabled Transaction Booster: Auto Clock Over-Charging Mode: Auto CPU Spread Spectrum: Enabled PCIE Spread Spectrum:Enabled CPU Voltage: Auto CPU Voltage Reference: Auto CPU Voltage Damper: Enabled CPU PLL Voltage: Auto DRAM Voltage: 2.0v FSB Termination Voltage: Auto North Bridge Voltage: 1.4 North Bridge Voltage Reference: Auto South Bridge Voltage: Auto Test with Memtest86+ V1.7 from http://www.memtest.org. Do the same to the second set of sticks. Results? Link to comment Share on other sites More sharing options...
jcrsairusr88 Posted February 2, 2008 Author Share Posted February 2, 2008 Thanks for the suggestion. In clarification I only have 2GB total (2 1GB sticks - I indicated Twin2x naming as well as the single stick part designations). I downloaded Memtest86+ 1.70 and tried it - it dows not have the test #3 at DDR2-800 crash Memtest86 3.4 does. I tried both the settings recommended in the XMS Qualification and Testing at http://www.asktheramguy.com/v3/showthread.php?t=52351 (best mapping to the P5K-E-WIFI BIOS anyway) and the settings that you recommended. Results - errors in test #3 and test #4 right away: test #3 - 3 errors at address 000010f487ec (271.5 MB) and 1 at address 00073e840fe (1854.2MB). test #4 - 11+ errors at address 000010f487ec (271.5MB). Tried static read enabled/disabled, legacy USB enabled/disabled, lower FSB rates for timings in the mid-700Mhz range and the same results occurred (even corrected BIOS Vcore drop to stock recommended too). The same address locations occur for the errors over and over again - is that an indication of a specific chip unhappy with the frequency ? Back to normal stock settings with DDR2-667 (FSB 333) and Memtest86+ 1.70 passes a full 5 passes without any errors (both sticks in and dual channel mode). I'm not looking to overclock - just to have the DDR2-800 part run at its expected speed. I don't have other RAM (or another DDR2 system) to cross-check either (in case it is the M/B or BIOS being finicky - since everything POSTS at DDR2-800 and even Windows runs I'm not sure there). Should I go back to the vendor or just live with stable 667Mhz ? Link to comment Share on other sites More sharing options...
DerekT Posted February 2, 2008 Share Posted February 2, 2008 Should I go back to the vendor or just live with stable 667Mhz ? Can you set and test each stick singly? Test at 800MHz with 5-5-5-15 and 2.0v. If both sticks test in error, then very likely the issue is external to the DRAM. If one stick errors and the other tests fine, you very likely have a bad stick. You can either RMA to the Vendor or to Corsair directly. Link to comment Share on other sites More sharing options...
Kelmer Posted February 3, 2008 Share Posted February 3, 2008 Hi My specs ASUS P5K-E/WIFI-AP BIOS 1004 Core 2 Duo E8400 @ 3.00 GHz (defaults) TWIN2X2048-6400C4 - 2 x 1 GB I started to have same problems after i replaced cpu and updated bios. My computer worked fine few months before that. My old cpu was e6550 and bios version was 0503. I believe that new bios is causing this. I tried 1002 bios also,and that didnt work either. After bios and cpu update my computer was rock solid for months. I have tryed allmost every settings in bios and still memtest gives errors when memory is set to 800mhz. When i set memory to 667, memtest passes OK. I try to downgrade bios to some older versions to see if it works then. Link to comment Share on other sites More sharing options...
jcrsairusr88 Posted February 3, 2008 Author Share Posted February 3, 2008 Can you set and test each stick singly? Test at 800MHz with 5-5-5-15 and 2.0v. If both sticks test in error, then very likely the issue is external to the DRAM. If one stick errors and the other tests fine, you very likely have a bad stick. You can either RMA to the Vendor or to Corsair directly. Hi DerekT. I'm slightly leery of pulling the sticks and doing single tests (no anti-static bags and plain old bad luck these days). It is too bad there is no way to temporarily disable RAM bank/slots via BIOS (it used to be a feature on some old PC's and seems to be available for a lot of servers). After continued scouring of posts all over I noticed a mention of dual-channel mode apparently not working with Q6700 with the P5K-E-WIFI (but working with other processors). I wonder if the modules might work in single-channel mode at DDR2-800 (although as I understand it dual-channel mode DDR2-667 is better than DDR2-800 single channel mode). Link to comment Share on other sites More sharing options...
jcrsairusr88 Posted February 3, 2008 Author Share Posted February 3, 2008 Hi My specs ASUS P5K-E/WIFI-AP BIOS 1004 Core 2 Duo E8400 @ 3.00 GHz (defaults) TWIN2X2048-6400C4 - 2 x 1 GB I started to have same problems after i replaced cpu and updated bios. My computer worked fine few months before that. My old cpu was e6550 and bios version was 0503. I believe that new bios is causing this. I tried 1002 bios also,and that didnt work either. After bios and cpu update my computer was rock solid for months. I have tryed allmost every settings in bios and still memtest gives errors when memory is set to 800mhz. When i set memory to 667, memtest passes OK. I try to downgrade bios to some older versions to see if it works then. Hello Kelmer. I've only had BIOS 0906 (was latest available when I got the board), so I have nothing to compare against. An interesting possibility is raised by your E6550 working at DDR2-800 and the E8400 only passing memtest at 667. The E6550 is a 1066FSB part and both the E6750 and E8400 are 1333FSB parts. (Edit: Oops - As Kelmer points out below the E6550 is a 1333FSB part. So much for that theory ;-) I wonder if either the 1333 FSB CPU's and/or BIOS may be related to the similar problem we see. General question: Is anyone running any 1333 FSB CPU on the P5K-E-WIFI-AP with Corsair 6400 (C4 or C5) at DDR2-800 in dual channel without Memtest86+ errors ? Single channel mode ? If so please indicate which module/bios/CPU combination seems to be working for you. Link to comment Share on other sites More sharing options...
Kelmer Posted February 4, 2008 Share Posted February 4, 2008 Hello Kelmer. I've only had BIOS 0906 (was latest available when I got the board), so I have nothing to compare against. An interesting possibility is raised by your E6550 working at DDR2-800 and the E8400 only passing memtest at 667. The E6550 is a 1066FSB part and both the E6750 and E8400 are 1333FSB parts. I wonder if either the 1333 FSB CPU's and/or BIOS may be related to the similar problem we see. General question: Is anyone running any 1333 FSB CPU on the P5K-E-WIFI-AP with Corsair 6400 (C4 or C5) at DDR2-800 in dual channel without Memtest86+ errors ? Single channel mode ? If so please indicate which module/bios/CPU combination seems to be working for you. E6550 is actually 1333 FSB cpu. I tried bios versions 0906 and 1006, but those wont solve problem. I could'nt flash any older bios to motherboard, even with dos flasher... Sometimes memtest fails at 3%, sometimes it goes over 50% before errors. I try some another brand memory modules tomorrow, if there is any difference... Link to comment Share on other sites More sharing options...
Kelmer Posted February 6, 2008 Share Posted February 6, 2008 I tried TWIN2X2048-6400C5DHX set of ram yesterday and it works fine at 800mhz! After that i tested my old modules on another computer and memtest passes fine memory set at 800mhz. So i'm very positive that p5k-e and TWIN2X2048-6400C4 wont work together when using bios 0906 or newer. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 6, 2008 Corsair Employees Share Posted February 6, 2008 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...
jcrsairusr88 Posted February 8, 2008 Author Share Posted February 8, 2008 Can you set and test each stick singly? Test at 800MHz with 5-5-5-15 and 2.0v. If both sticks test in error, then very likely the issue is external to the DRAM. If one stick errors and the other tests fine, you very likely have a bad stick. You can either RMA to the Vendor or to Corsair directly. I still have not tested the sticks singly yet, but I worked both of them incrementally across the slots (A1,B1 originally, then A1,B2 and A2,B2) in DDR2-800 (and DDR2-667 sanity check). The non-dual channel DDR2-800 setting (A1,B2) resulted in different memory location indications than A1,B1 and A2,B2 (which reported the same). For A1, B2 it was 50d407ec/1293.0MB and 73e800fc/1854.6MB - which would indicate the 2nd stick's memory range. For the dual-channel modes the errors were at 10f487ec - 271.5MB and 73e846fc/1854.6MB or 73e840fc/1854.2MB (which would indicate errors from both sticks). In all configurations DDR2-667 is without any errors (memtest86+ or windows memory tester). It seems like TWIN2X2048-6400, DDR2-800 and P5K-E-WIFI with BIOS 0906 don't want to play nicely together (but are perfectly fine at DDR2-667). Any suggestions (other than hoping a future BIOS update might influence the memory controller/TWIN2X2048-6400 interaction) ? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted February 8, 2008 Corsair Employees Share Posted February 8, 2008 Testing the modules one at a time would be suggested and I thought you did is why I suggested we replace them. What BIOS version do you have installed, the latest is Version 1006 And when you made the changes did you load setup defaults and set the settings each time? Link to comment Share on other sites More sharing options...
fRESHjUICE Posted February 11, 2008 Share Posted February 11, 2008 So i'm very positive that p5k-e and TWIN2X2048-6400C4 wont work together when using bios 0906 or newer. Don't think it sthat man. I'm running the 1005 bios on the p5ke wifi with 2gigs of the same ram that you've using: CM2X1024-6400C4DHX and at a slightly faster speed though @ 966mhz 4-4-4-12. You didn't mention. Have you tested your memory at 800mhz 4 4 4 12 with 2.1v ? I had an issue with the abit dark raider not running ram properly at spd values (same memory sticks)and 1.8v Link to comment Share on other sites More sharing options...
jcrsairusr88 Posted February 22, 2008 Author Share Posted February 22, 2008 Testing the modules one at a time would be suggested and I thought you did is why I suggested we replace them. What BIOS version do you have installed, the latest is Version 1006 And when you made the changes did you load setup defaults and set the settings each time? Hi Ram Guy. That was Kelmer (who joined the thread later and we were comparing notes). He was using some TWIN2X2048-6400C4 - 2 x 1 GB while I have TWIN2X2048-6400 (C5) 2 x 1GB, each with the same M/B but different BIOS (his was at 0503->1004, mine at 0906). Interestingly he indicated his issues appeared after a CPU upgrade and the BIOS update with it - my initial BIOS level was 0906 so I had nothing to compare against. I attempted to load defaults and manually set each time, but I saw the same results. I see 1006 is a beta bios (and no mention of memory related fixes) - and given the rate of new bios releases I think I'll be waiting until things settle down before considering a flash. Link to comment Share on other sites More sharing options...
DerekT Posted February 22, 2008 Share Posted February 22, 2008 Shut the system down Remove the power cord Remove the CMOS Battery Set the CMOS_CLR Jumper to On Press the power button for 10 seconds Let sit for 10 minutes Set the CMOS_CLR Jumper to Off Insert the CMOS Battery Insert the Power Cord Restart the system Enter the BIOS Load Default Settings Save Default Settings and Exit Restart the System and enter the BIOS Insert the previous settings. If issues arise, then if you do not test the DRAM sticks singly, you can not isolate the issue from being DRAM or system. Link to comment Share on other sites More sharing options...
Brand Nubiss Posted February 23, 2008 Share Posted February 23, 2008 I am having almost identical problems with my system. I just built this system a week ago. Windows Vista seems to run fine but WoW is experiencing corrupt files. This is how I discovered this problem with the memory. I've tested both sticks by themselves several times and I get the same weird #3 error as was mentioned in a previous post. I have tried reseting the CMOS. I have upgraded the bios from 906 to beta1006. Windows won't even boot do to corrupt files when I use the C4 settings. One difference from the other guys problem... I still get the same mem errors when I am running at DDR667. And yes my legacy usb is disabled. Could there be some sort of conflict with Asus's "Super Memspeed Technology" says on the box it's suppose to enhance memory speed up to 75%? I would RMA this memory but what are the odds of both sticks being bad? Maybe a bad batch? I purchased this ram at Frys. Link to comment Share on other sites More sharing options...
DerekT Posted February 23, 2008 Share Posted February 23, 2008 I would RMA this memory but what are the odds of both sticks being bad? Maybe a bad batch? I purchased this ram at Frys. The odds are not good at all. Both sticks tested singly and producing errors in the same area are indicative of errors external to the DRAM. Did you follow my above suggestions? Link to comment Share on other sites More sharing options...
Brand Nubiss Posted February 24, 2008 Share Posted February 24, 2008 Well I tried out the settings you suggested on your first post. And this time I'm using the right version of memtest 2.01 instead of 3.4a on their homepage.(any particular reason you suggested version 1.7?) So after tweaking with those settings I finally got one of the sticks to run stable at 667.(other stick still failed) I was even able to get C4 settings to work. Voltage is set to 2.1 just as it's labeled on the ram. No matter what I did this ram wouldn't pass at 800. Should I take this ram back to Frys? RMA? I have this sinking feeling that my problem will still persist and that many others using this ram with this board will also fail tests. Windows seems to run fine so unless someone is gaming it isn't noticable or it takes time for the errors to build up. And then they have to find their way here or report it to asus before the problem is recognized and then how long till there's a bios fix? :( Or could I have a bad board? How often are Asus motherboards faulty right out of the box? If it is the MB then me and the OP of this thread both have boards with identical problems! Is there anyone out there using TWIN(CM)2X2048 PC6400 DDR2 ver2.1 with this motherboard that has successfully passed memtest? Link to comment Share on other sites More sharing options...
Brand Nubiss Posted February 25, 2008 Share Posted February 25, 2008 PROBLEM SOLVED! Ok so I went and returned this ram to Frys for a replacement of the same. Only this time they gave me ver6.2! Everything works great now! Thanks for all the help! LOL SO JUST FOR THE RECORD ver2.1 IS NOT COMPATABLE WITH THIS BOARD!!!! Link to comment Share on other sites More sharing options...
DerekT Posted February 25, 2008 Share Posted February 25, 2008 Thanks for the heads up. :o: RAM GUY will document this issue. Link to comment Share on other sites More sharing options...
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