jibesh101 Posted November 6, 2007 Share Posted November 6, 2007 I have a Asus P5N32-E SLI Plus mobo with the 650i nvidia chipset. I recently went from 2GB TWIN2X2048-6400C4D to 4GB. I was able to run them using these specs for a few days: DDR 800 SLi ready: Disabled Memory Voltage: 2.0v NB Core Voltage: 1.4v TCL: 4 TRCD: 4 TRP: 4 TRAS: 12 Command Per Clock: 2 TRC: 24 But then whenever I turned the computer on, BIOS would not POST. I would have to remove a DIMM module in order for BIOS to POST. Sometimes it would POST with all 4 DIMM modules. It would usually reset the memory timings back to DDR 800 5-5-5-18 in BIOS. I have set it from DDR 800 to DDR 667 but that does not seem to help either. Also, Vista x64 crashes with error Page Fault In Non Paged Area when all 4 modules are inserted. I have tested each module individually and ran memtestx86 with all 4 DIMM modules inserted and have not found any errors. Any help would be appreciated. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 6, 2007 Corsair Employees Share Posted November 6, 2007 You have a couple of seperate issues. For Vista, some 64 bit versions require a patch from Microsoft when using 4gb+ of memory. Also, your 4gb of memory places a greater load on the memory controller. Please try raising your FSB Termination ( or FSB Tracking) voltage to 1.4v. Also, the tested voltage for the memory is 2.1v so you need to increase that also. If you are not stable with these settings, you may need to set the memory speed to 667mhz manually. Link to comment Share on other sites More sharing options...
jibesh101 Posted November 6, 2007 Author Share Posted November 6, 2007 I'll try your suggestions when I get home. Thanks :sunglasse Should I stick with the timings i posted above? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 6, 2007 Corsair Employees Share Posted November 6, 2007 You can attempt them at 4-4-4-12, however at 800MHz you may need to loosen them to 5-5-5-15 to make the system stable. Link to comment Share on other sites More sharing options...
jibesh101 Posted November 7, 2007 Author Share Posted November 7, 2007 I managed to get the system stable. Hopefully this setup will last. I found that the original TWIN2X2048-6400C4D set I had was revision 2.1 and the new set was revision 2.2. I had both sets running on the same DIMM channels. I changed them so that each set was on separate DIMM channels. I removed the new set and only had 2GBs in the system and cleared CMOS. I changed the BIOS settings to the ones below, rebooted and loaded into Vista x64, shutdown and inserted the other 2GBs. BIOS posted successfully and Vista x64 loaded successfully without any errors. These are the settings I have it running on. DDR 800 SLI Ready Memory: Disabled Memory Voltage: 2.1v NB Core Voltage: 1.4v CPU VTT (FSB Termination) voltage: 1.4v TCL: 4 TRCD: 4 TRP: 4 TRAS: 12 Command Per Clock: 2 TRC: 24 Thanks for the help and I'll update if I have any further issues. :biggrin: Link to comment Share on other sites More sharing options...
bigbuck08 Posted November 7, 2007 Share Posted November 7, 2007 Here is the Vista update to allow more than 3GB to run. http://support.microsoft.com/kb/929777 Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 7, 2007 Corsair Employees Share Posted November 7, 2007 Glad to hear you got it working, lets us know if you have anymore problems! Link to comment Share on other sites More sharing options...
jibesh101 Posted November 7, 2007 Author Share Posted November 7, 2007 Here is the Vista update to allow more than 3GB to run. http://support.microsoft.com/kb/929777 I downloaded and tried to run it yesterday but it just comes back with an error. I believe its has already been installed on my system. I have not had any memory related crashes so far after I changed the BIOS settings. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted November 7, 2007 Corsair Employees Share Posted November 7, 2007 If the system is stable, then I would not worry about the patch. Link to comment Share on other sites More sharing options...
jibesh101 Posted November 8, 2007 Author Share Posted November 8, 2007 Well, it happened again this morning. BIOS would not post after a shutdown. I changed the timings to 5-5-5-15 @ 800MHz. I also upped the memory voltage to 2.2v. Computer booted up and loaded into Vista x64 just fine after that. I shut down several times and waited several minutes before powering the system on. So far, the computer has booted up fine. Before I left for work, I shut it down so it will be off for another 8 to 9 hours. So we will see if the system starts up when I gets home. Can anyone tell me how much of a performance hit the system will take going from 4-4-4-12 @ 800MHz to 5-5-5-15 @ 800MHz timings? Link to comment Share on other sites More sharing options...
Bio-Hazard Posted November 8, 2007 Share Posted November 8, 2007 That's how the problem started with the Dominator PC6400 I had in my rig, only I was running only 2 sticks. After a period of time it got worse and worse til the stuff stopped posting completely with the Dominator memory installed regardless of what I tried. I ended up have to RMA the stuff, currently I'm running some cheap value ram from another company at the same settings as the Dominator with slightly less voltage till my Dominator stuff shows back up. Link to comment Share on other sites More sharing options...
DerekT Posted November 9, 2007 Share Posted November 9, 2007 I would advise dropping the voltages on the RMA'd DRAM. These boards often overvolt DRAM and if your DRAM is 4-4-4-12 at 2.1v, I would set to 2.0v and retest. With these boards and overvolting of both the DRAM and motherboard overvolting of the DRAM can and very likely will lead to future issues with the DRAM. RMA becomes cyclic. Link to comment Share on other sites More sharing options...
jibesh101 Posted November 10, 2007 Author Share Posted November 10, 2007 Well I did everything I can possibly think of. I have increased and decreased the voltage, overclocked and underclocked the RAM, CPU, and FSB, tried various timings, upgraded and downgraded the BIOS and cleared CMOS, etc... I have run stability and error checking tests but have not found a problem. But I still have POSTing issues with 4GBs of RAM installed. I have come to the conclusion that both the RAM and motherboard basically sucks. :mad: Link to comment Share on other sites More sharing options...
DerekT Posted November 10, 2007 Share Posted November 10, 2007 I have come to the conclusion that both the RAM and motherboard basically sucks. :mad: I could understand the time and effort you have put in this attempt to gain the 4GB if the price of DRAM was what it was six months (or more) ago. Since this is not the case, it is far easier to sell the DRAM and purchase 2 X 2048 sticks and be done with all the heartache that you have. That's my advice. I certainly understand your feelings. Sometimes it is better to accept a limitation and find a work around of the issue. 2 X 2048 is that workaround. You will have 4GB and will be running in 800Mhz (6400) speed without issue. Link to comment Share on other sites More sharing options...
jibesh101 Posted November 10, 2007 Author Share Posted November 10, 2007 Yea, i guess but its just frustrating. Which set of 2x2GB do you recommend? Link to comment Share on other sites More sharing options...
DerekT Posted November 10, 2007 Share Posted November 10, 2007 Yes, it would be less frustrating if the motherboard manuals gave more explicit explanations of the issues that 4 DRAM banks being populated can bring. I would choose the Twin2X4096 6400C5DHX personally. http://www.xtremesystems.org/forums/showthread.php?t=144935 Link to comment Share on other sites More sharing options...
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