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- From: ajb8886@ritvax.isc.rit.edu
- Subject: Re: HELP: Adding faster DRAM
- Message-ID: <1993Jan21.172213.6184@ultb.isc.rit.edu>
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- Organization: Rochester Institute of Technology
- References: <1993Jan20.071650.14940@nevada.edu>
- Date: Thu, 21 Jan 1993 17:22:13 GMT
- Lines: 25
-
- 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
-