[PLUG] SDRAM PC-100 question

Wil Cooley wcooley at nakedape.cc
Sat Nov 2 19:07:13 UTC 2002


Galen Seitz wrote:

> Registered memory is typically used in higher end systems such as servers.
> The use of registers to buffer the signals from the SDRAM controller
> allows more memory to be installed.  For example, in an unregistered
> system, each address line from the controller has to go to every SDRAM.
> If you have 4 DIMM slots and 8 SDRAMs per DIMM, that's 32 loads.  Driving
> that many loads at 133 MHz is a difficult thing to do.  If those same
> 4 DIMMs were to use registered DIMMs, there would only be 4 loads on the
> address line.  Driving 4 loads at 133 MHz is no problem.

That's great information Galen, thanks!

Wil
-- 
Wil Cooley                                 wcooley at nakedape.cc
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