scotttgold Posted October 14, 2009 Share Posted October 14, 2009 I've been having cold boot issues with my ASUS P5E WS board and this ram for some time now. I've tried every test imaginable and nothing works until I pull out 2 dimms of this ram and run only 4G. I really want to run 8G but the cold boot problems are killing me! Note on cold boot problem: On cold boot, the system will not post anything...yet the fans will run at high speed. After letting it run like this for ten minutes....I can hit the reset button and the machine will post and boot just fine. I can even run Memtest for 10+ after this type of warm-up and will have no errors with 8G or 4G installed. All my BIOS settings are AUTO...but I would eventually like to lightly OC this rig with 8G to 2.8Ghz or 3.0Ghz. I am aware of issues with 4 DIMMS populated but not sure of what my settings should be for 8G of TWIN2X4096-6400C4DHX on this board. Can someone offer some suggestions or point me in the right direction? Thanks! Link to comment Share on other sites More sharing options...
Yellowbeard Posted October 14, 2009 Share Posted October 14, 2009 All my BIOS settings are AUTO...but I would eventually like to lightly OC this rig with 8G to 2.8Ghz or 3.0Ghz. This sounds like the most obvious problem to me. Your memory is rated at 2.1v which you have to set manually. Using AUTO only gives it 1.8v. Link to comment Share on other sites More sharing options...
scotttgold Posted October 15, 2009 Author Share Posted October 15, 2009 I'll change the DRAM voltage to 2.1v and let you know how the cold boot issue turns out. Thanks for your help! Link to comment Share on other sites More sharing options...
scotttgold Posted October 15, 2009 Author Share Posted October 15, 2009 Update: Didn't work. Changed the DRAM voltage to 2.1v and still had the cold boot issue this morning. All symptoms exactly the same. I'm wondering what in the world would need 5 to 10 minutes of warming up to work properly. I've checked to see if everything is seated properly and it is. Here's some more info that might help: http://www.venture-multimedia.com/photoshoots/cpuz.jpg http://www.venture-multimedia.com/photoshoots/hardware.jpg Link to comment Share on other sites More sharing options...
Yellowbeard Posted October 15, 2009 Share Posted October 15, 2009 Leave the memory voltage at 2.1v. Now, you'll need to adjust your memory controller voltage. Try the 1.35v to 1.4v range. Link to comment Share on other sites More sharing options...
scotttgold Posted October 15, 2009 Author Share Posted October 15, 2009 Leave the memory voltage at 2.1v. Now, you'll need to adjust your memory controller voltage. Try the 1.35v to 1.4v range. Ok. Is the memory controller voltage called something else in the BIOS? Sorry, but I don't seem to see anything called that. Also, is there a way to monitor those voltages? Thanks. Link to comment Share on other sites More sharing options...
Yellowbeard Posted October 15, 2009 Share Posted October 15, 2009 Intel calls their memory controller for that board a Memory Controller Hub (MCH) or possibly North Bridge (NB). You'll need to check with your manual or with ASUS if you are not certain which is the memory controller voltage. Link to comment Share on other sites More sharing options...
scotttgold Posted October 15, 2009 Author Share Posted October 15, 2009 Cool. The only thing I see in the BIOS is North Bridge. I know it's set to AUTO right now....is there anyway to know what the actual voltage is currently? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 16, 2009 Corsair Employees Share Posted October 16, 2009 With 4 modules I would suggest setting the memory frequency at DDR667 and set the memory Voltage to 2.1 Volts and set the NB/MCH/SPP Voltage to +.2 Volts as well and test the system with http://www.memtest.org. In addition, with some MB's (Mostly ASUS) you have to disable legacy USB in the bios when running any memory test. Link to comment Share on other sites More sharing options...
scotttgold Posted October 16, 2009 Author Share Posted October 16, 2009 RAM GUY, Where can I find my current NB voltage? It's set to AUTO so I have no idea where start. Also, do you mean change my DRAM timing to 333MHz so 2x333MHz = 667MHz? Thanks! Link to comment Share on other sites More sharing options...
Yellowbeard Posted October 16, 2009 Share Posted October 16, 2009 Please familiarize yourself with your manual and BIOS. Look at your hardware monitor in the BIOS. If the memory controller voltage is not listed there or in the manual, you'll need to check with ASUS. If I had to guess, stock is 1.25v but, that would only be a guess as it can vary from board to board. Link to comment Share on other sites More sharing options...
scotttgold Posted October 16, 2009 Author Share Posted October 16, 2009 NB Voltages aren't displayed anywhere in the BIOS. Manual doesn't state any default level. It does state the range though 1.25V~1.90V. I'll check with ASUS to see what they default to. Was I correct on setting the DRAM to 333MHz? Link to comment Share on other sites More sharing options...
scotttgold Posted October 16, 2009 Author Share Posted October 16, 2009 I changed the DRAM speed to 667MHz (333MHz x 2) and it didn't solve the cold boot problem. I'll change the NB voltage tomorrow and see if that changes anything. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 16, 2009 Corsair Employees Share Posted October 16, 2009 Please let us know how you make out with that and I would maybe test the modules one set at a time to be sure one is not failing or week. Link to comment Share on other sites More sharing options...
scotttgold Posted October 16, 2009 Author Share Posted October 16, 2009 RAM GUY, I've run Memtest for days with 8G and never got an error. Could testing them one by one show something the four wouldn't show? Link to comment Share on other sites More sharing options...
Yellowbeard Posted October 16, 2009 Share Posted October 16, 2009 Try setting 1.35v manually in BIOS for the memory controller voltage. Link to comment Share on other sites More sharing options...
scotttgold Posted October 20, 2009 Author Share Posted October 20, 2009 UPDATE: I've been super busy lately and haven't had time to update the NB Voltage to 1.35v......I'll do that tonight though so we can see what happens in the morning. However, I discovered something interesting. All this weekend I decided to put my computer to "Sleep" rather than "Shut Down". I noticed that even after letting the computer sit overnight and turning it on....it didn't' have any cold boot problems. I'm wondering if this helps prove what is causing my cold boot issues? I'm also wondering what is the exact difference between the Shut Down and Sleep states that makes such a difference in cold booting. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 20, 2009 Corsair Employees Share Posted October 20, 2009 Sleep or standby will save the information to active memory and when you shut the system off or shut down nothing is saved. I would suggest trying the voltage adjustment and see if that helps. Link to comment Share on other sites More sharing options...
scotttgold Posted October 21, 2009 Author Share Posted October 21, 2009 UPDATE: Ok, set the NB voltage to 1.35v and still had the Cold Boot issue this morning. Any suggestions? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 21, 2009 Corsair Employees Share Posted October 21, 2009 What is the default setting? Add +.25 Volts to it like 1.45Volts. And do you have the latest BIOS version? Link to comment Share on other sites More sharing options...
scotttgold Posted October 21, 2009 Author Share Posted October 21, 2009 I'm running the most recent version of the boards BIOS. As for default setting.....I have no clue. The board has always been set to AUTO and it does not state NB voltage in the BIOS, manual or other places. I wish there was a monitoring app that can tell me NB voltage. Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 21, 2009 Corsair Employees Share Posted October 21, 2009 No but normally the default Voltage will be the first Voltage you can set when you take it off of Auto and I would post a screen shot of the MB BIOS page where these Voltage are listed. Link to comment Share on other sites More sharing options...
scotttgold Posted October 21, 2009 Author Share Posted October 21, 2009 The BIOS is funky in that, you can't turn off AUTO and then see a voltage displayed. It always reads AUTO, until you select the text and type in your desired voltage. It's either AUTO or the voltage you type in. Does that make sense? Also, there are no NB voltage readings being displayed anywhere in the BIOS.....I know, it's nuts! However, it does state a voltage range in the manual through 1.25V~1.90V Link to comment Share on other sites More sharing options...
scotttgold Posted October 22, 2009 Author Share Posted October 22, 2009 So do you recommend I go to 1.45V? Link to comment Share on other sites More sharing options...
Corsair Employees RAM GUY Posted October 22, 2009 Corsair Employees Share Posted October 22, 2009 1.25 Volts would normally be default then and I would try it at 1.45 Volts. Link to comment Share on other sites More sharing options...
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