DFI nF4 Ultra-D won't post

[slash196]

When I plug in 1 gig (2X512) in the recommended slots, it boots fine, but when I stick the other stick in either of the remaining slots, it just gives me long beeps, and the diagnostic LEDs indicate what I believe to be a RAM problem. Is this fixable, or just a design flaw? I'm running the latest official BIOS.

 

[Furen]

You need to install ram in pairs. You could either get another 512MB dimm or just run 1GB.

 

[Hacp]

Originally posted by: Furen
You need to install ram in pairs. You could either get another 512MB dimm or just run 1GB.

Then how come I can run on one stick???? Explain that.

 

[grooge]

Originally posted by: slash196
When I plug in 1 gig (2X512) in the recommended slots, it boots fine, but when I stick the other stick in either of the remaining slots, it just gives me long beeps, and the diagnostic LEDs indicate what I believe to be a RAM problem. Is this fixable, or just a design flaw? I'm running the latest official BIOS.

I'm sure that if you look in your manual, in the RAM section, you will see that you cannot run 3 stick of RAM. It is either 1, 2 or 4. It is clearly written in my gigabyte motherboard manual.

As for why it run with one but not 3, well, 1 stick run single channel. 2 dual channel. Since the mode is activated by the number of modual you have, the if it sees at least 2, it activate dual channel automatically. adding annother one will not put it back to single, but rather create an error as it dont have the required number of module to run dual channel.

Is it fixable. Well, if there was an option to disable dual channel in BIOS, then maybe it could, but the memory controller, being in the CPU, make it rather impossible, unless the memory controller as such option to be configured.

 

[Fresh Daemon]

DFI is notoriously picky about RAM. Try each stick individually and see if any one by itself gives errors. I believe it is possible to run with three sticks, but with the LanParty boards memory is often a crapshoot.

 

[deadseasquirrel]

According to DFI's FAQ:

30002498 Why NF4 series boards fail to boot with three memories? 2005/01/27
Answer :

There is an integrated memory controller in AMD 64-bit Socket 939 series CPU, supporting dual channel. The integrated memory controller will not differentiate from dual or non-dual inaccurately, the computer might not be booted smoothly. Even if the computer can be booted, the total capacity of memory is still detected as two memories combined instead of three or just detected with incorrect memory size. Thus, we do not suggest using three memories on NF4 series boards.