Solved My Pc is not using whole of 4 GB(usable 3.5 GB) Tags: Memory Western Digital Last response: November 12, 2011 6:34 AM in Memory Share DArky_08 November 7, 2011 3:32:02 PM Hi, Today i bought my PC , AMD FX-x4 MOBO- gigabyte 880gm-D2H RAM- crossair 4 GB(1 piece) WD 500 GB HDD now my prob is, i installed windows 7 64 bit .But still my pc is using only 3.50 gb of 4 gb . And my bios is also updated to 2.4(latest for my MOBO). what i am doing wrong?? More about : usable Best solution ko888 a b } Memory November 7, 2011 3:43:11 PM In your CMOS Setup Utility --> MB Intelligent Tweaker(M.I.T.) --> IGX Configuration What is the UMA Frame Buffer Size set to [Auto] or [128MB] or [256MB] or [512MB] ? Frame buffer size is the total amount of system memory allocated solely for the onboard graphics controller. DArky_08 November 12, 2011 6:33:19 AM Best answer selected by DArky_08. Can't find your answer ? Ask ! Get the answer DArky_08 November 12, 2011 6:34:14 AM thx ko888. i got it Can't find your answer ? Ask ! Publish Related resources: ForumWindows 7 64 Bit Only 4GB Useable ForumEx58-Extreme Stability Issues ForumWin7 (pro 64bit) recognizing all 12 GB but saying only 6 GB is usable?! ForumPurchasing tomorrow! final advice? ForumFull ram not used ForumQuiet & Discreet whole computer build for under $1500 all inclusive Forum7950 killing my whole PC ? ForumGetting a whole slew of BSODs ForumWARNING ! AeroCool Strike X ST - Almost burned my whole PC ForumShuttle barebones pc xs 35 v3 wont post with 4 GB of RAM ForumGA-P 35 -DS3L + Intel C2D E6750 + 4GB Adata PC 6400 ForumWill BF3 works? ForumUpgrading from 4GB PC -6400 to 8 GB PC -8500 on a P 35 Mobo w/ Q6600 cpu ForumWhole computer crashes on games ForumDo i really need to replace my whole computer? ForumTransfer whole HDD to new one? ForumIntel i5 3550p & AS Rock Z77 PRO 3 ForumDell dimension 1100 specs motherboard 2 memory slots not using more than 256 meg ForumSystem: 24GB ram (16GB usable) ForumSystem: 24GB ram (16GB usable) More resources Read discussions in other Memory categories Compatibility DDR2 DDR3 Dual Channel RAM Corsair G.SKILL !