Can't use three sticks of memory in 9NDA3J?

[MrCodeDude]

Epox 9NDA3J, there are four DIMMS.

I have 2x512mb Corsair Value and 1x512 PDP XBL. Now, if I run all three together, it only detects the PDP stick. If I run one PDP and one Corsair, only detects the PDP. I run the PDP by itself, it runs fine. I run both Corsair together, it runs fine.

I must be overlooking something because I'm confused

 

[Swamp]

they the same speed? like pc3200. etc...
2 512mb are same speed but what about the PDP?

 

[MrCodeDude]

All are PC3200. Timings are tighter on the XBL than they are the Value.

 

[Ike0069]

Quote from DFI NF4 Ultra manual.

Q: Why will the board fail to boot when 3 Dimms re used?

A: The integrated memory controller in AMD's 64-bit socket 939 series CPU supports dual channel however the controller is not capable of accurately distinguishing detween dual and single channels resulting to boot up problem. If you have luckily booted the system, the total memory size detected is from 2 Dimms only, not 3. Therefore we do not suggest using 3 Dimms

It's the same for all S939 boards. You need to run 1, 2, or 4 sticks.
Some people have reported success using 3 sticks in a S939 MB, butoverall S939 just doesn't like 3 sticks.

 

[MrCodeDude]

Originally posted by: Ike0069
Quote from DFI NF4 Ultra manual.

Q: Why will the board fail to boot when 3 Dimms re used?

A: The integrated memory controller in AMD's 64-bit socket 939 series CPU supports dual channel however the controller is not capable of accurately distinguishing detween dual and single channels resulting to boot up problem. If you have luckily booted the system, the total memory size detected is from 2 Dimms only, not 3. Therefore we do not suggest using 3 Dimms

It's the same for all S939 boards. You need to run 1, 2, or 4 sticks.
Some people have reported success using 3 sticks in a S939 MB, butoverall S939 just doesn't like 3 sticks.

I thought that running 4 sticks would make it go @ DDR333