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Windows 7: 16 GB ram Usable.

18 Sep 2010   #11

Windows 10 Pro (x64)

Have your tried: FAQ ID # 58783 - Why does my X58 show less memory in windows as available then the Maximum I have installed into the motherboard?

My System SpecsSystem Spec
18 Sep 2010   #12

Windows 7 Enterprise (x64); Windows Server 2008 R2 (x64)

Quote   Quote: Originally Posted by ianfitz View Post
My mobo can handle 24 GB.
I have seen this problem before:

1) Just because you can install 24GB of RAM in the motherboard does not mean it can use it.

2) Even if the manufacture of the MB says it will use 24GB of RAM that many only be true if you have the latest BIOS and the correct revision of the MB. You may have revision B and you have to have revision D before you have access to 24GB of RAM. Your owner’s manual and the web site many NOT tell you this and the only way to find out is to call the manufacture’s tech support.

3) Miss match RAM. I have had a MB report that it has 24GB of RAM and everything looks good in BIOS only to have less in the OS. Swapping RAM for all matched fixed the problem.

Just a few notes from the field.
My System SpecsSystem Spec
18 Sep 2010   #13

Win 7 Ultimate x64

Quote   Quote: Originally Posted by ianfitz View Post
I have windows 7 professional, and I heard it could use 192 Gb of ram. I was kind of disappointed when I saw only 16 GB of my ram was usable. Help?
Have you tried running a Ram Test Utility to see if it also only sees 16 GB ???????
So you have six 4 GB sticks ????? and only four can be seen by the OS ???
My System SpecsSystem Spec

19 Sep 2010   #14
Layback Bear

Windows 7 Pro. 64/SP-1

GO to Start and type in resmon and it will show how your ram is being used. Windows 7 uses ram different. Just let Windows 7 handle it. Some is in reserve,standby, ect. No tweaking is recommended by me.
My System SpecsSystem Spec
19 Sep 2010   #15

Windows 8.1 Pro RTM x64

How much RAM is being reported by the BIOS when you boot up? This is usually reported in MB, so it should say 24576MB if all your RAM is recognised.
My System SpecsSystem Spec
19 Sep 2010   #16

Systems 1 and 2: Windows 7 Enterprise x64, Win 8 Developer

Do you have the latest bios?

ECS Web Site
My System SpecsSystem Spec

 16 GB ram Usable.

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