Tuesday, September 2, 2014

memory - I can't use all my RAM when it's set to the proper frequency

I have 16 gigs ddr3 evga 1866 sc. When I set it to 1866 via bios, windows 7 say I only have 7.92 usable.




In msinfo32 it shows Virtual RAM as the culprit, however, I have set no paging file on and it is displayed properly in that window. I also checked, unchecked max memory many times in advanced boot options in msconfig . It keeps defaulting to zero. Not saving my setting even when I check the "make these settings permanent"tab.



I've tried multiple bios settings, remapping RAM, idk name it, I've probably tried it. Tried regedit, tried cmd prompt bcd /set {default} trucantememory blah blah blah ect. Only thing that works is if I set my RAM to 1333.. Then it shows all 16 gigs. But obviously I'd like the faster speed.



Might be this mobo..messed up bios..idk. normally i can't stand it when people say '"I'm not sure but" in this case I'll take any ideas whatsoever.




  • AMD 8320 4.8 Ghz

  • 16 gigs 1866 ddr3 evga sc currently 1333 Mhz


  • Nvidia 1080

  • Asus sabertooth 990 fx 2.0

  • Windows 7

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