Win7 (pro 64bit) recognizing all 12GB but saying only 6GB is usable?! Tags: Memory Last response: March 26, 2010 3:52 PM in Memory Share farbs March 26, 2010 3:29:00 PM Hello I recently just finished building my machine Gigabyte GA-X58A-UD3R motherboard 12 GB (6x2GB) G.Skill ddr3 tripple channel memory Got windows 7 professional 64 bit installed Went into system specs and it says "12GB (6GB Usable) I updated the bios to F5 and rebooted, it showed all 12GB usable!! I shut down the machine, woke up this morning turned it on, and back to 12GB (6GB Usable) I went into msconfig, boot, and made sure the max memory is unchecked. Ive searched and seen this problem, but Ive yet to find any solutions. Please help More about : win7 pro 64bit recognizing 12gb 6gb usable farbs March 26, 2010 3:52:34 PM CCleaner also showing 12GB What gives? m 0 l Can't find your answer ? Ask ! Publish Related resources Win7 (pro 64bit) recognizing all 12GB but saying only 6GB is usable?! Forum Win7 64bit 6gb RAM shows only 2gb usable Forum 6GB of RAM, Windows 7 64-bit says only 3GB is usable Forum Only 3,18GB RAM usable out of 12GB on 64bit Windows Forum 64bit Windows 7 only recognizing 4GB of 12GB installed RAM Forum 4gb RAM installed but only 2.75gb usable with a 64bit Win7 Forum Put 8GB of RAM into system, only getting 6GB recognized, 1.99GB usable. Simple S Forum [Solved] Windows 7 64b recognized 8gb memory, but says only 4 usable Forum More resources Read discussions in other Memory categories Compatibility DDR2 DDR3 Dual Channel RAM Corsair G.SKILL !