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- Path: sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!sdd.hp.com!ux1.cso.uiuc.edu!news.iastate.edu!isucard.card.iastate.edu!MLONG
- From: MLONG@isucard.card.iastate.edu
- Subject: Bought SIMM's from Marco? read on...
- Message-ID: <168A5F547.MLONG@isucard.card.iastate.edu>
- Sender: news@news.iastate.edu (USENET News System)
- Organization: CARD
- Date: Fri, 20 Nov 1992 23:26:31 GMT
- Lines: 22
-
- We have finally resolved a problem today with 4MB SIMM's 70ns for IBM
- PS/2 90/95/56/57 purchased from a company called Marco. We had bought
- several of these units about a year ago and installed them into 90/95's.
- They were purchased as 70ns units, and the memeory chips on the units
- ended in a 70. After receiving a pre-installed 90 with the new SYSINFO
- program (This is one _NEAT_ program - thanks IBM very much), we tried this
- utility on some of these other 90's with the Marco memory chips. It reported
- that the SIMM's were only running at 80ns. So I called Marco and they
- shipped us another batch of 70ns 4MB SIMM's. These were also set to 80ns.
- With the help of the Marco technician, he had us remove one of the SIMM
- jumpers, but then the system could not recognize the SIMM. After observing
- another set of SIMM's that were set to 70ns, I de-soldered the resistor jumper
- second from the bottom. Now the SIMM's configure in properly and SYSINFO
- reports them to be set to 70ns.
- The moral is if you purchased Marco 70ns SIMM's for PS/2, you may want to run
- the SYSINFO program or pull the case off and check the SIMM jumpers, to make
- sure you are set up for 70ns and maximum performance.
- I am not in any way trying to discourage people from purchasing memory from
- this company, I am only concerned that users have the memory set to the
- proper speed for maximum performance.
-
- Mike Long - CARD Iowa State University - PC/LAN Analyst
-