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- Path: sparky!uunet!gatech!rutgers!njitgw.njit.edu!hertz.njit.edu!dic5340
- From: dic5340@hertz.njit.edu (David Charlap)
- Newsgroups: comp.sys.ibm.pc.hardware
- Subject: Re: SIMM query
- Message-ID: <1993Jan11.231527.1941@njitgw.njit.edu>
- Date: 11 Jan 93 23:15:27 GMT
- References: <1ilj3pINNqub@jhunix.hcf.jhu.edu> <1993Jan11.085528.27858@nuscc.nus.sg> <1993Jan11.161910.26095@zeos.com>
- Sender: news@njit.edu
- Organization: New Jersey Institute of Technology, Newark, N.J.
- Lines: 28
- Nntp-Posting-Host: hertz.njit.edu
-
- In article <1993Jan11.161910.26095@zeos.com> jre@zeos.com (Jim Erickson) writes:
- >If the SIMMs are too slow for the machine they will: 1)work without any
- >problems or 2)produce errors ranging from GPFs to parity errors either all of
- >the time or intermitantly.
-
- Or they may work fine for a while and then go bad. I had this happen
- once. My first computer (an 8MHz XT clone) had 640K of 150ns DRAM.
- When I upgraded the motherboard to a 10MHz 286, I transferred the RAM
- chips. Bad move. It worked fine for a while (about 4 months), after
- which I began getting more and more parity errors and general system
- lockups. When I put the RAM back in the XT, it developed the same
- problems.
-
- Overdriving RAM can wear it out, making it useless on the machines it
- was originally designed for.
-
- Anyhow, when I put 100ns chips in the 286, all the problems
- disappeared. It still froze occasionally, but I'm sure that was
- static damage to some chip somewhere.
-
- Anyway, when I got my 25MHz 386 motherboard, I made very certain that
- the RAM was the proper speed for it. I got 70ns SIMMs for it, and
- never had a problem.
- --
- |) David Charlap | .signature confiscated by FBI due to
- /|_ dic5340@hertz.njit.edu | an ongoing investigation into the
- ((|,) | source of these .signature virusses
- ~|~
-