Buffered/Unbuffered? Registered?

What does this mean? I've looked through the stickies and found nothing that'd answer it. Thanks for any help!

Registered RAM has an input buffer (or register). This results in higher latencies, but provides extreme stability. Usually, this is only used for servers. Dual CPU motherboards are intended for servers, and so usually require registered RAM.

Unbuffered RAM is what most of us use. It's stable enough for all but "mission critical" applications, has lower latencies, and costs less.

Thank you sir, it's been bugging me for the longest time but I never asked. Heh.

LOL
Glad to help.