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From: jgraf@pollux.svale.hp.com (John Graf)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Memory upgrade and refrest rate...
Message-ID: <6710006@pollux.svale.hp.com>
Date: 8 May 91 17:47:35 GMT
References: <1991May3.042704.31762@iitmax.iit.edu>
Organization: Hewlett Packard CPCD, Sunnyvale CA
Lines: 16

Changing the refresh rate will NOT buy you any performance gain.
The only reason to put faster-access DRAMs in your system is if
you can also decrease the number of wait-states added to memory
cycles by the DRAM controller.  Typically the wait-states are
hard-wired into the DRAM controller (they assume a certain speed
DRAM), but some controllers have programmable wait-state registers.
You should try to get a Technical Reference Manual from Tandy (if
one exists) to find out if there's any way to change the wait-
states.  If you can't change 'em, don't waste your money on the
faster DRAMs -- your system will still assume you have the slow
DRAMs.

Regards,

John Graf
8v)