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- Newsgroups: comp.unix.pc-clone.32bit
- Path: sparky!uunet!super!becker
- From: becker@super.org (Donald J. Becker)
- Subject: Re: Sun 3/60 SIMMS in a PC?
- Message-ID: <1992Nov20.155455.7699@super.org>
- Sender: news@super.org (USENET News System)
- Nntp-Posting-Host: super
- Organization: IDA Supercomputing Research Center
- References: <Bxx3sK.LA7@rice.edu> <1992Nov20.064848.16846@stone.oz.au>
- Date: Fri, 20 Nov 1992 15:54:55 GMT
- Lines: 30
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- I'm using older SIMMs from a Sun in 486/33 (ETEQ chipset) and 386/40
- (Opti chipset) machines. They were borrowed when the Suns were
- upgraded to 4M SIMMs. Although they are slower (100ns) than the
- specified speed ("< 80ns"), the only memory problems I have had were
- with new 70ns SIMMs (one 1M and one 4M were bad) and a 20ns. cache
- static RAM. With the older SIMMs you've have a few years "burn-in".
-
- I was planning on running the SIMMs at an extra wait state, but it
- turned out they were reliable at full speed.
-
- The best program I found for testing memory is compiling the Linux
- kernel all night. The GCC/Linux combination does a good job of using
- every bit of memory you have. With the cache memory problem I could
- get the machine to fail (usually gracefully) in about three minutes
- compiling the kernel, while under MS-DOS (mostly _Aces of the
- Pacific_) it looked like a rare software glitch.
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- --
- Donald Becker becker@super.org
- Supercomputing Research Center
- 17100 Science Drive, Bowie MD 21114 301-805-7482
-