What is Unregistered RAM?

[Pretty Cool]

I am trying to determine if this RAM would work on an Abit BH6 1.0
motherboard. Thanks.

Viking 128MB PC-133 Non-ECC Unregistered CL2 DIMM (VC Value)

 

[NforSa]

that ram should work fine, Registered ram is used in mission critical servers and stuff, it costs more and is slightly slower, so for a standard computer non-registered is fine