hajhouse wrote: > På 2007-04-10, skrev Rick Moen: >> Quoting hajhouse ([EMAIL PROTECTED]): >> >>> I've never understood the distinction. What's different between >>> registered and unregistered DIMMs? >> Registered RAM has a buffer through which data are checked in and out of >> the stick's address space, to help ensure data integrity. It's >> generally supported only on server boards. Unregistered RAM is more >> often referred to as "unbuffered". See: >> >> http://www.mushkin.com/doc/techSupport/papers/registered.asp > > I see. So then, for the strongest assurance of data integrity, one would > choose registered ECC RAM.
Er, sort of. Sure if most paranoid it adds something. But the additional buffer adds cost, complexity, and damages performance. It's worth it on servers mostly to allow for larger dimm counts. For instance with non registered memory you often can have 4 low density dimms, 2 high density dimms, or downclock the memory bus for 4 high density dimms. Registered memory allows for 8 high density dimms at full clock rate. So mainly it's a mechanism to allow for more dimms more than improving reliability with a lower number of dimms. _______________________________________________ vox-tech mailing list [email protected] http://lists.lugod.org/mailman/listinfo/vox-tech
