memory not detected

[takturna]

Hi
I have a hp xm600 running xp pro I have 512 mb RDDAM but it is only showing 256mb how can I get it to show all of the memory? I have used PC wizard system analyzer and shows all the memory thanks

 

[Mondoman]

Perhaps you made a mistake - a quick search shows the xm600 uses PC-100 SDRAM, not RDRAM.

 

[takturna]

no this is RDRAM hp uses this as an upgrade in this pc