system shows only 3.49 gb usable ram out of 8gb

[john TJ]

just got my new custom built pc
specs are:
core i5 4440 3.1ghz
asus b85m-k 16 gb mobo
adata 8 tgb 1600mhz
antec 550 watt psu
case antec 4000u3
nvidia gt 730 2gb ddr3

right now in the task manager it shows only 3,49gb /8gb is usable
but yesterday when i got the pc i had about 7.96 gb usable
WHAT MIGHT BE THE PROBLEM??
please give me a solution
THANKS FOR READING!

 

[Havo_k]

Go in resource monitor, select memory and check the physical memory bar. What does it say where it says "installed" below the memory bar?

Picture:

http://puu.sh/dDpJJ/2b00471b0d.png

 

[holthuizen]

Wath OS do you have ? you need a 64bit version to use more than 4 gb of your RAM.

The GPU allocates one portion of the ram memory, ussaly around 1.5 gb.


good luck.

 

[john TJ]

Wath OS do you have ? you need a 64bit version to use more than 4 gb of your RAM.

The GPU allocates one portion of the ram memory, ussaly around 1.5 gb.


good luck.

WIN 8.1 64 BIT

 

[john TJ]

Go in resource monitor, select memory and check the physical memory bar. What does it say where it says "installed" below the memory bar?

Picture:

http://puu.sh/dDpJJ/2b00471b0d.png

I THINK I SOLVED IT ,THE PROBLEM WAS MSCONFIG>BOOT>ADVANCED>UNCLICKED THE MAXIMUM MEMORY OPTION
now it shows 7.9 usable and available 6.8-7.1 gb ( keeps on varying)
THANKS FOR THE FAST SUPPORT

 

[john TJ]

is there a way to change the cached memory amount
it shows 1.3 gb cached

 

[Havo_k]

Cache does nothing but good, increasing your performance by already having the files in ram before you even need it