USABLE RAM

[D3V_Sh]

hello 

i have just built a pc and using 8 gb of ram in dual channel but my pc shows that only 3.8gb ram is usable what is it and if it is a problem which i think it is what i should do 

pc operating system win 10 64 bit pro

thanks

[Skiiwee29]

Usually its from using 32bit OS. But you say you have 64 bit so that shouldnt be the problem. I have seen this before and the issue was bad RAM. All sticks would be recognized in windows and the BIOS, but no matter what, it would only ever show 3.8gb usable until I put a different kit of RAM into the system. Try populating the other 2 ram slots and see if it shows up properly. 

[D3V_Sh]

it is showing 8 gb see the screen shot

[xriqn]

Did you follow your motherboard's manual to determine which sticks go where?

[D3V_Sh]

it has only 2 ram slots and both are occupied

 

[Oshino Shinobu]

8 minutes ago, D3V_Sh said:

it is showing 8 gb see the screen shot

Can you go to task manager and take a screenshot of the RAM tab?

[D3V_Sh]

here it is ram tab task manager

 

[Oshino Shinobu]

4 minutes ago, D3V_Sh said:

here it is ram tab task manager

 

One of the sticks is being marked as hardware reserved. This could be a fault RAM slot or module. 

 

I'd advise removing one of the sticks and booting the system. If it works, move that stick to the other slot and boot again. Then switch in the other stick and try it in both slots. If both fail to boot in one of the slots, you've likely got a faulty RAM slot. If one stick fails to boot in both slots, you've likely got a faulty RAM module. 

 

If both work in both slots, you could try updating the BIOS. 

[agent_x007]

How usable number changes when only one RAM stick is installed ?

[meenmeen1103]

The other 4GB is "Hardware reserved", maybe being used by integrated gpu

[D3V_Sh]

ok let me try thanks

 

[D3V_Sh]

i have a dedicated gpu  

[Belzebuth]

38 minutes ago, D3V_Sh said:

hello 

i have just built a pc and using 8 gb of ram in dual channel but my pc shows that only 3.8gb ram is usable what is it and if it is a problem which i think it is what i should do 

pc operating system win 10 64 bit pro

thanks

Can you give us the full config ? MoBo, GPU, CPU, ...

[D3V_Sh]

9 minutes ago, Belzebuth said:

Can you give us the full config ? MoBo, GPU, CPU, ...

i dont really get what u want know pls clarify 

and i have checked both ram modules one at a time and in both slots both of them show the same result usable ram 2 gb out of 4 gb

 

[Belzebuth]

2 minutes ago, D3V_Sh said:

i dont really get what u want know pls clarify 

and i have checked both ram modules one at a time and in both slots both of them show the same result usable ram 2 gb out of 4 gb

 

We may need to know your Motherboard model, CPU model, RAM model and so on

[D3V_Sh]

Just now, Belzebuth said:

We may need to know your Motherboard model, CPU model, RAM model and so on

how to find it? i really noob at pc 

 

[agent_x007]

Check pins in CPU socket, increase IMC voltage.

What exact RAM are you using ?

Can you screenshot "SPD" tab from CPU-z ?

[Belzebuth]

Type "msinfo32.exe" in the start menu's search box, then upload the screenshot of what you can see.

[D3V_Sh]

here is what msinfo shows

[Christophe Corazza]

As @Oshino Shinobumentioned, try to eliminate whether or not it’s a bad memory module first.

[D3V_Sh]

11 minutes ago, agent_x007 said:

Check pins in CPU socket, increase IMC voltage.

What exact RAM are you using ?

Can you screenshot "SPD" tab from CPU-z ?

ddr3 1600 mhz ram which is dowgraded to 1333 becuz of my motherboard 

i dont get what do u mean by cpu pins 

and cpu z screenshots

 

[D3V_Sh]

1 minute ago, Christophe Corazza said:

As @Oshino Shinobumentioned, try to eliminate whether or not it’s a bad memory module first.

already did that used both slots individually and ram modules too

 

[agent_x007]

What BIOS version are you using ?
(CPU-z "Mainboard" tab - it's "Fx" value, where "x" is a number from 1 to 10)

[D3V_Sh]

 

1 minute ago, agent_x007 said:

What BIOS version are you using ?
(CPU-z "Mainboard" tab, it should be "Fx", where "x" is a number from 1 to 10)

it says F9

[agent_x007]

Newest BIOS is F10 : LINK.
It improves compatibility with your CPU. 
It's worth updating to checking if it changes anything.
Also, check in "msconfig" (run command), if you have a check box "maximum memory" active (it's in advanced settings, under "Boot" tab). It has to be greyed-iout.
If it's not, uncheck, save changes, and restart your PC.