4GB only showing as 2GB ??

[Candymancan]

Ok before you say its the 32bit os read what i have to say.


I just got a 2nd pair of 2gb memory G.skill. Both pairs are the same so i have 4x1GB now.


My motherboard is a DFI NF4 SLI-DR. I checked in the manuall and on there website it support 4GB of memory so i dont it.

My bios only reports 2gb memorytests reports 2gb, and windows only shows 2gb. Iv tried switching the memory around nothing works.

Whats the deal here ?

 

[nbowman]

have you put em in 1 at a time, and make sure each of them shows up as 1GB? (to make sure all 4 work)

 

[DSF]

Is there a memory remapping option in your BIOS somewhere?

 

[Candymancan]

Yes i put each 1 in and it reported 1gb just fine, and i mixed them and they reported 2gb fine, but when i put all 4 they dont even show 3gb, just 2048mb.

The remmaping thing you mentioned, my board has an Option called memory mmi or something it says remapp for over 4gb thats all there is. It didnt work when i enabled it.

 

[jamesbond007]

I would check your timings and rates/speeds in the BIOS. If your motherboard is set to SPD (which I think just pulls the recommended timings from the memory) try switching it to manual and type in the manufacturer's specified timings for the RAM modules. You can try to 'relax' the timings, particularly the CAS or CL (CAS Latency) in the BIOS. If it's suppose to be 4, try 5.

I've seen this happen a few times before where the RAM settings were too aggressive to work across 4 DIMMs. With just 2 sticks, it was fine, but the system would throw a fit with the SPD timings.

~Travis

 

[Candymancan]

I just tried all that nothing worked not even settings the memory to a 100mhz divider.

The board says supports 4GB but i guess thats only 2x2GB not 4x1GB. Figures. Im just gonna sell my entire AMD system, and get a E8500 this issue just piss's me off.

 

[tcsenter]

Originally posted by: Candymancan
The remmaping thing you mentioned, my board has an Option called memory mmi or something it says remapp for over 4gb thats all there is. It didnt work when i enabled it.

You'll have to be more exact, not "or something". PCI MMIO memory hole or remap for over 4GB are the relevant BIOS controls here.

How do these settings appear in the BIOS and what options are available for them? Are any additional settings revealed when you enable either of them?