A dual-channel can not be upgraded on the issue?

Users questions:My computer motherboard is MSIAMETHYST-M; CPU is athlon3200 +; memory is golden Feiling 256MBDDR400 2. Bought a post-modern 512MBDDR400 can not enter the self-test, the host issued a toot sound. Now the memory back, And I ask What is the reason. If you want to upgrade memory, how should I do?
Experts answer: First of all your question, I have a question: 512M or 256M of memory is a single plug mixed interpolation. Because the double-pass technology to a higher memory requirements, it is better to use the same brand, same size memory, the establishment of double-pass. The case of a single plug,The best try from another memory slot.
  • This information provided by the users.Thanks!