Windows 10: Windows shows i have 31,9GB RAM

Currently have 32GB RAM installed on my X99 system with an Intel 5820K but according to Resource monitor on Windows 10 there is 32680MB Physical memory installed, total value of 32680MB and 87.5MB Hardware reserved,. Checking the system properties windows i have only 31.9GB RAM to play with.

Strange thing is I recently upgraded Windows 7 to to Windows 10 yesterday on another drive and there Resource monitor shows 32768MB Physical memory installed, total value of 32680MB and 87,5MB Hardware reserved. Going to the system properties it shows full 32GB. How come the two Windows 10 installations shows different numbers on "physical memory installed" and at the same time only 31.9GB on the first one and 32GB on the second one?

As far as i know i don't have any hardware currently reserving RAM since i run a dedicated card and the 5820K doesn't have an integrated graphic card.

:)

 

Windows 10 shows Installed RAM 24GB (16GB usable)

I am having the same problem. Under Windows 7 Pro, my RAM showed 24 GB, but as soon as I upgraded to Windows 10 Pro, it only shows 16 GB RAM. Also, in System Info, I am only showing 16 GB Physical RAM installed. Yet, if I swap out my Windows 10 hard drive
for my Windows 7 hard drive, the RAM shows 24 GB. I remember having to upgrade to Windows 7 Pro from Windows7 Home because the maximum RAM that would show under Windows 7 Home (at one time, anyway) was 16 GB. I am wondering if Windows 10 doesn't recognize
all four of my DIMMs. I have 4 sticks of 6 GB, btw.

 

I have a problem with RAM

So I have 8GB of Ram but I can only use 3.97GB.

I have windows 64bit and I made my own PC, I have tried to change my RAM through msconfig but it never works.

Please help.

PC

CPU - AMD FX6300 Black Edition 6 Core (3.5/4.1GHz, 8MB Level 3 Cache, 6MB Level 2 Cache, Socket AM3+, 95W, Retail Boxed)

AMD FX6300 Black Edition 6 Core (3.5/4.1GHz, 8MB Level 3 Cache, 6MB Level 2 Cache, Socket AM3+, 95W, Retail Boxed):Amazon.co.uk:Computers & Accessories

Mother Board - Gigabyte 970A-DS3P AMD 970 Motherboard (Socket AM3+, DDR3, S-ATA 600, ATX, PCI Express 2.0 x16, USB 3.0)

Gigabyte 970A-DS3P AMD 970 Motherboard (Socket AM3+, DDR3, S-ATA 600, ATX, PCI Express 2.0 x16, USB 3.0)-Black:Amazon.co.uk:Computers & Accessories

Power Supply - EVGA 100-W1-0500-K3 - 500W 80 Plus Power Supply (100-W1-0500-K3)

EVGA 100-W1-0500-K3 - 500W 80 Plus Power Supply (100-W1-0500-K3)(EU Socket):Amazon.co.uk:Computers & Accessories

RAM - Ballistix Sport 8 GB Kit (4 GB x 2) DDR3 1600 MT/s (PC3-12800) UDIMM 240-Pin Memory

Ballistix Sport BLS2CP4G3D1609DS1S00CEU 8 GB Kit (4 GB x 2) (DDR3, 1600 MT/s, PC3-12800, DIMM, 240-Pin) Memory:Amazon.co.uk:Computers & Accessories

Graphics Card - Sapphire PCI Express R7 260X 2GB Graphics Card (OC GDDR5, HDMI, DVI, DP, 2S)

Sapphire PCI Express R7 260X 2GB Graphics Card (OC GDDR5, HDMI, DVI, DP, 2S):Amazon.co.uk:Computers & Accessories

Hard Drive - Seagate ST1000DM003 3.5 inch 1TB Barracuda Hard Drive

Seagate ST1000DM003 3.5 inch 1TB Barracuda Hard Drive:Amazon.co.uk:Computers & Accessories

 

There will always be some memory in hardware reserved, it is not just for integrated video. The value for total RAM is subject to rounding and the rules that govern this are undocumented.