🚀 go-pugleaf

In article <1993Jan20.071650.14940@nevada.edu>, dinhyen@nevada.edu (Dinh-Yen Tran) writes:
>Hi:
>	I would like to put an additional 4M of RAM into my 386.  My computer
>uses 70ns DRAM but the company I want to do business with only stocks
>60ns DRAM.  Is it OK to use 60ns DRAM in place of the 70ns DRAM?  The chip
>type is 1Mx1-bit DIP.  Has anyone ever tried anything like that.  Please help.

Using 60ns DRAM in place of 70ns is fine.  60ns DRAM is merely designed and
rated to have a faster minimum access time.  

It's somewhat akin to putting VR-rated tires (good for 150MPH) on a Volkswagen
Bug.  It's nice to know that your tires are good for that speed, but you know
the Bug won't go that fast.

On the plus side, if your extended CMOS setup does let you set waitstates on
DRAM read/write out of SRAM cache, then you could reduce the wait state by
another notch on the banks with the 60ns dram and get a .slight. improvement in
overall memory accesses to those banks.

Alex


>Thanks.
>dinh-yen tran
>dinhyen@redrock.nevada.edu