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- Newsgroups: comp.sys.ibm.pc.hardware
- Path: sparky!uunet!zeos!jre
- From: jre@zeos.com (Jim Erickson)
- Subject: Re: Any 486 motherboards that use 36-bit memory modules ?
- Organization: Zeos International, Ltd
- Distribution: usa
- Date: Mon, 25 Jan 1993 17:46:29 GMT
- Message-ID: <1993Jan25.174629.28615@zeos.com>
- References: <C18y4y.6rx@inews.Intel.COM>
- Lines: 35
-
- In article <C18y4y.6rx@inews.Intel.COM> ttung@td2cad.intel.com (Thye-Lai Tung) writes:
- >Are there any 486 motherboards that use (PS/2 ?) 36-bit memory modules ?
- >
- >I'm looking for ways to replace or upgrade my home 386 computer to a 486
- >with 16Meg of memory (for 32-bit O/S).
- >
- >By employing 2 banks of 9-bit SIMM's, most 486 motherboards are optimized
- >for 8M of memory (or 32M). To get 16M, one must put 4M SIMM's into a single
- >bank. There is no interleave, but luckily, the cache system can cover up
- >the problem somewhat. Doesn't that sound stupid anyway !
- >
- >On the other hand, if the boards were designed for 36-bit SIMMs, four 4M
- >(1Mx36) modules would yield 16M with 4-way memory interleave ! I find
- >36-bit modules more flexible and suitable for 386DX and 486. But they are
- >not widely used in clone systems, why ?
- >
- >Theory aside, how do 16M, one-bank machines fare in real life with real
- >applications ?
- >
- >Thanks for any information you can provide.
- >
- >Thye-Lai Tung
- >ttung@td2cad.intel.com
-
- Our new systems use 36-bit SIMMs. I also believe the new Gateway systems do,
- but you would have to check with them to be sure.
-
- ---JRE---
-
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