I have just purchased an MSI XPower Big Bang MB along with 12GB of 1333MHz of OCZ Memory. When I leave everything at defaults (1066MHz) inside the bios, 12GB is recognized by both Windows and the Bios. When I change the memory multiplier to 5 in order to run the ram at 1333MHz, the Bios and Windows only sees 8GB of RAM. (Sometimes 4GB ?!?!?!?) Although the really strange thing is even when the Bios/Windows is seeing 8GB or 4GB, CPU-Z still identifies that there is 12GB in the system. I have set all my clocks to the way they were supposed to be along with the proper voltage. I even tried pushing the voltage up to 1.75 from 1.65. I have also tried disabling Spread Spectrum, but no difference. The system runs very stable as well, it just looses the ability to view all my RAM. I have never seen a problem like this and am hoping someone can please help.
Big Bang XPower: Problems with memory and Start Cycle
- Thread starter smadam813
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Maybe I missed it, but are these 4GB each sticks? Yes, the black slots are to be populated 'first'. Bent socket pins or poor CPU pad contact can certainly cause RAM to vanish. A strong light & a good magnifier are essential when checking the CPU pad & socket pins. Since bios 1.3b9 didn't fix the recognition issue, I can only guess a CPU problem, socket problem, DIMM slot problem, or the RAM is not at all compatible.
My question which no one can seem to answer is: Why is it when my speed is 1066, the computer is 100% stable and shows all the RAM, but when I higher the speed, RAM disappears? Shouldn't RAM dissapear regardless of speed if it was an issue with the socket or CPU?
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I really wish I had an answer to that. Recognition or compatibility issue of some kind is all I can come up with. If it runs stable at 1066, it may be best to accept that speed, & maybe work on 'tweaking' the timings & CR to squeeze a little better performance?
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A couple of reasons for this is changing settings in the bios. The other reason is probably because in bios 'Power Mangaement Setup', EuP 2013 is 'Enabled". Double clutch should go away if you disable that. Double clutch should also go away after the next boot after all the setting changes have taken effect.
HU16E said:A couple of reasons for this is changing settings in the bios. The other reason is probably because in bios 'Power Mangaement Setup', EuP 2013 is 'Enabled". Double clutch should go away if you disable that. Double clutch should also go away after the next boot after all the setting changes have taken effect.
Thanks!? That fixed that issue, but now I have hit a wall.? I believe the issue has to be with my memory because what I thought was stable at 1066MHz threw about 20 errors in memtest86.? I am going to try different RAM to start my hardware troubleshooting.? Hopefully this will solve my problem, but if not, I am going to try and replace the MB.? Do you think this could possibly be my processor?? Another possibility is the PSU, but I do not believe this is the problem because I have removed other hardware such as one of my video cards to reduce the load, but the problem is still consistent.
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I can't honestly say the CPU was damaged or degraded by this, but very possible. There is a formula for increasing DRAM voltage in unison with QPI, but I have never found a need for it, & not totally sold it doesn't have a long term downside. As for PSU, they have been known to cause strange things to happen too. It's really 'way' overdue, but can you post & create a complete signature of system components? Amps on the PSU +12V rail(s), etc.?
Good to hear everything is up & running well now!