what does registered memory mean?

[johnnyw]

what does registered memory mean? , as I have DIMM PC 100 and I am not to aware of the best types of ram..

[SemiCycle]

I wouldn't buy anything from them, but this is the general definition.

http://www.ocsystem.com/whatunandbuf.html


"Unbuffered modules are the most common. In unbuffered memory, the chipset controller deals directly with the memory. There is nothing between the chipset and the memory as they communicate. Buffered modules contain a buffer to help the chipset cope with the large electrical load required when the system has a lot of memory. Registered modules are unbuffered modules that contain a register that delays all information transferred to the module by one clock cycle. Buffered and registered modules are typically used only in servers and other mission-critical systems where it is extremely important that the data is properly handled."