What does "registered" memory mean

[Zeph]

I know what ECC memory is and does, but what's the difference between ECC and "ECC Registered" DIMMS. Can't seem to find the answer.

Thanks

 

[Gunbuster]

Registered has the little EEPROM on it that holds all the cas, ras specs and such.

 

[dkozloski]

Gunbuster, what you are talking about is Serial Presence Detect that supplies default memory timings to the motherboard. Registered memory is buffered memory that is used for servers and other large users of memory to reduce system loading.

 

[JACKHAMMER]

yep, dk hit it right on.

 

[MagnusInscitia]

most standard mobo's won't even accept it, and if they do it is much slower than a similarly clocked unbuffered piece. (F.Y.I.= buffered/registered memory is the same thing.)