Solved Help 6.00 GB (5.85 GB usable) Tags: Windows 7 Memory Last response: April 20, 2013 6:51 AM in Memory Share 6f6u6 April 20, 2013 6:38:04 AM acer aspire 5750G i7 2630QM NVIDIA GT540M 2GB Windows 7 ultimate SP1 64bit my ram is one 4gb and one 2gb in my system info it says "Installed memory (RAM) 6.00 GB (5.85 GB usable)" why? i never update the bios anyone help thankyou guys. More about : usable Best solution Novuake a b $ Windows 7 a b } Memory April 20, 2013 6:47:04 AM Windows allocates a certain amount of RAM to be used by the system. THere is nothing you can do, besides, anything above 4GB is enough for most usage. Share noidea_77 a b $ Windows 7 a b } Memory April 20, 2013 6:48:15 AM Because some MB are "reserved for hardware", most likely the NVIDIA GT540M in your case. m 0 l Can't find your answer ? Ask ! Get the answer 6f6u6 April 20, 2013 6:51:56 AM thank you very much guys. thankyou noidea_77 thankyou Vovuake m 0 l Can't find your answer ? Ask ! Publish Related resources Solved6.00 GB RAM Installed - 1.75 GB RAM Usable!! Forum Solvedinstalled memory 6 gb (2.67gb usable) help Forum Solved20gb RAM installed but only 15.5 usable ....Urgent HELP!!!!!! Forum Solved8Gb Ram installed and 3.95GB usable??? PLEASE HELP!!! 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 Solved16GB installed only 2Gb is usable - Please Help Forum SolvedI have 8GB of RAM, only 4GB is usable? Help please. Forum Solved3.45GB usable with 6GB RAm in Windows 8.1 (64bit) help. Forum Solved8gb installed - 4 gb usable, Win 7 64bit Help Forum Solved8GB RAM installed Windows 8 64bit says (3.9 GB usable). Help! Forum SolvedWindows 7 64 bit 4gb ram 3.48 gb usable!?! HELP Forum 6.00 GB of Ram (3.99 GB usable) Forum Solved8gb ram (2gb usable) help Forum SolvedLenovo z585 16gb ram? Forum Win8 32 bit sees 8 GB RAM (usable 3.5 GB) but 64 bit restarts on 8 GB of RAM. Please help. Forum Solved Installed Memory (RAM): 12.00gb (3.25gb usable) 64-bit. Help! Forum SolvedHelp understanding what usable means (3.50GB usable) Forum I got Win 7 64 bit and 16 GB of RAM, but only 7,97 GB of RAM usable. Why? Please Help! Forum 4GB Ram (1.95 Usable) HELP !!! Forum 4GB Ram (1.95 Usable) HELP !!! Forum More resources Read discussions in other Memory categories Compatibility DDR2 DDR3 Dual Channel RAM Corsair G.SKILL !