Using Up 1/2 The RAM

[FuglyDuckling123]

Hi,

This has been hard to try figure out but I just bought 8GB or Corsair Vengence Pro Blue 1866mhz RAM and put it in my Gigabyte 990FXA UD3 motherboard along with my AMD 8350 but when I get in my PC it says 8.00GB (3.98 Usable) I have Windows 7 64bit and the memory was supported in the memory support list. Any idea?

Thanks

 

[TwistedFury]

How many programs do you have running? I know that if you have a lot of browser tabs open and are running other programs, it can eat your ram up.

 

[FuglyDuckling123]

How many programs do you have running? I know that if you have a lot of browser tabs open and are running other programs, it can eat your ram up.

Here is a screen of my processes. I closed the Google chrome and that got rid of about 20% but RAM usage isnt the problem. Its the missing 4GB of RAM. Look

that's my PC specs.

 

[anti-painkilla]

http://www.tomshardware.com/answers/id-1839780/4gb-usable-8gb-installed-entire-checklist.html

There are a few people having problems with this. Read through the solved ones to see what has worked for others. I doubt the above thread will help but it is a possibility.

 

[TwistedFury]

Check on the bios to see if it sees the ram correctly.

 

[FuglyDuckling123]

Check on the bios to see if it sees the ram correctly.

I will. I tried setting it to 1866mhz as its supposed to be but it says an error and doesn't boot so I have to keep it at 1333mhz. So not only do I have half the RAM but half the speed as well.

 

[anti-painkilla]

Can you install one stick at a time and see if they both work?

 

[FuglyDuckling123]

Can you install one stick at a time and see if they both work?

yeah I did that 1 stick works perfect the other though didn't work in the first 2 slots only in the last one. But instead it says 7.00GB usable which is better than 4. So Ill prob RMA and if that doesn't work ill have to RMA the motherboard for faulty DIMM slots. Thanks for the help.

 

[TwistedFury]

Can you install one stick at a time and see if they both work?

yeah I did that 1 stick works perfect the other though didn't work in the first 2 slots only in the last one. But instead it says 7.00GB usable which is better than 4. So Ill prob RMA and if that doesn't work ill have to RMA the motherboard for faulty DIMM slots. Thanks for the help.

Yes, Windows and other tasks are going to use some ram.

 

[Computer__GUY]

Are the Bios settings correctly setup?
Does your motherboard support 1866MHz?
Are both the units slotted onto the motherboard properly?
Perhaps one of the units is faulty?