8GB of ram recognized, 12 installed

[willydood]

So I have a intel db75en motherboard, and I recently just got 2 2gb sticks of ram to add on to my previous 2 4gb sticks. Once I installed them, I checked my bios, and the 2 4gb sticks are still the only 2 recognized, and on windows it tells me I have 8gb. But I ran cpu-z and it tells me I have 12 installed. Anything to help me solve this problem?

 

[PatrioticPickle]

Put the 2gb sticks in the 1st and 3rd slot and the 4gb sticks in the 2nd and 4th slot. And see how that goes. Make sure in the bios setting you have the memory clocked to a certain speed at which both lots of RAM can run at and not on the Auto setting.

 

[Dark Lord of Tech]

Ram mixing is hit and miss. Even identical modules purchased at different times can be incompatible.

 

[Shaun o]

Either what the two other posters before me have stated.

Or you have a memory limit cap set in the windows OS, as part of the configuration of it.

It may not be the case but as said if using mixed ram of different, density, brand or memory speed and latency timings.

But you should check if the cause is not because windows has a memory cap set for it.

To check if the case.

Click on start, and then the search box in windows.

Type: msconfig.

Press enter, or click on the search result with a left mouse click.

In the new window that opens.
Click on the boot tab at the top of the window.

Next click on the advanced tab.

On the next page you will a entry box to the top right, with a tick box above it.
If there is a value in there of 8192.

Edit the box deleting all of the numbers in the box.
Un tick the check box if ticked.

Click, apply or ok.

Restart the system, and let windows boot once again.

Then go to system information of windows.

If you find everything as above when running Ms config.

System information of windows should now show.

12Gb of physical system memory fitted.
What is left after windows has loaded into system memory.

And list what is free, or left for other programs to use you wish to run Willydood ok.

 

[willydood]

I tried just putting the two 2gb sticks in, and they work fine. They are just not recognized while all 4 sticks are in.

Also I already disabled max ram long ago

 

[brispuss]

What are the model/part numbers of all the memory modules?

 

[willydood]

So I just realized that my 2gb sticks don't match, one of them is one I had lying around, but they did work together when there was just the two 2gb ones.

2GB:
Patriot: PSD32G133381
Kingston: 99U5595-005.A00LF

4GB:
Kingston: 99U5471-020.A00LF
Kingston: 99U5584-005.A00LF

Also when I checked, I could pair a 4 with a 2 and get 6gb of ram as well, but nothing higher than 8.

 

[Tradesman1]

What OS, i.e. Win & Home Basic maxes at 8GB. Also do you have the latest BIOS? Believe I'd try raising the DRAM voltage + 0.06 and see if that helps, if your OS supports more than 8GB

 

[brispuss]

So I just realized that my 2gb sticks don't match, one of them is one I had lying around, but they did work together when there was just the two 2gb ones.

2GB:
Patriot: PSD32G133381
Kingston: 99U5595-005.A00LF

4GB:
Kingston: 99U5471-020.A00LF
Kingston: 99U5584-005.A00LF

Also when I checked, I could pair a 4 with a 2 and get 6gb of ram as well, but nothing higher than 8.

Thanks for the memory details. Unfortunately the Kingston memory "part" numbers as quoted are not decipherable, they may be batch or lot and/or date codes which is not really useful.

The Kingston memory part numbers should start with either KVR . ., or KHX . . , or HX . ., or similar.

As mentioned by Tradesman1, confirm your operating system supports greater than 8 GB of memory.