I got Win 7 64 bit and 16 GB of RAM, but only 7,97 GB of RAM usable. Why? Please Help! Tags: RAM Computers Memory Last response: December 31, 2013 5:21 AM in Memory Share Rboss December 31, 2013 3:34:36 AM I got Win 7 64 bit and 16 GB of RAM, but only 7,97 GB of RAM usable. Why? Please Help! I just saw this when opening Proprieties from My Computer. Can you please help me? Thanks in advance. More about : win bit ram ram usable Wolfshadw a b } Memory December 31, 2013 4:06:42 AM Verify your motherboard actually supports 16GB of RAM. -Wolf sends m 0 l Rboss December 31, 2013 5:21:39 AM Yea, the MB supports 32 gb of RAM. I fixed it by switching the quad channel sticks from 1 2 3 4 to 3 4 1 2. It works just fine now. m 0 l Can't find your answer ? Ask ! Publish Related resources Solved5.9GB usable of 16GB RAM Win7 enterprise 64bit Forum Solved4 GB ( 2 X 2 GB ) RAM ! Only 3GB (1.50 Gb usable ) Detected ! And I have Win 7 64bit ! Forum 4gb RAM installed but only 2.75gb usable with a 64bit Win7 Forum Win7 64bit 6gb RAM shows only 2gb usable Forum Win7 64 bit upgrade - only shows 3.12GB RAM as usable Forum Win8 32 bit sees 8 GB RAM (usable 3.5 GB) but 64 bit restarts on 8 GB of RAM. Please help. Forum Solvedi have install win 64bit in 4gb ram but it show 2.95 usable why???? Forum I have a new system New board prossessor ram everything. running win 7 64bit and it has 16 GB of ram but only registers 2.5g Forum Solved14GB RAM installed but only 7.98GB usable Windows 7 64-bit Forum Solved***URGENT*** 4 Months passed, no solution! 8 GB RAM recognized by BIOS and Windows 8.1 64 Bit, only 3.9/4080 MB usable! Help! Forum SolvedOnly 3GB of 4GB usable RAM on 64bit windows 7 D: Forum windows 7 64 bit home premium ram 12 gb available only 3.6 usable Forum 8GB of RAM only 3.16 usable (W7 x64) Forum SolvedWin 7 PRO 64 bit OS has 4 GB RAM but only 3.25 useable. Forum SolvedWin7 64-bit, 16Gb RAM, Half Is Hardware-Reserved Forum Win7 32bit 8gb RAM shows only 3.4gb usable Forum SolvedWindows 7 64 bit 4gb ram 3.48 gb usable!?! HELP Forum Win 7 64-bit 8GB Ram oonly 7.15GB usable? Forum 8GB RAM installed. Only 7.69GB usable in windows 7 64bit Forum Win7 64-bit, 4gb RAM - only 3.5gb showing - help! Forum More resources Read discussions in other Memory categories Compatibility DDR2 DDR3 Dual Channel RAM Corsair G.SKILL !