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- Xref: sparky comp.os.os2.misc:39876 comp.sys.ibm.pc.hardware:33635
- Newsgroups: comp.os.os2.misc,comp.sys.ibm.pc.hardware
- Path: sparky!uunet!mcsun!sunic!news.lth.se!d89os
- From: d89os@efd.lth.se (Ola Sigurdson)
- Subject: Re: EISA/MCA *or* Local Bus? Which is better for multitasking?
- Message-ID: <1992Dec18.154505.27040@lth.se>
- Sender: news@lth.se
- Organization: Lund Institute of Technology, Sweden
- References: <BzBx9G.Ap@utdallas.edu> <1992Dec17.231538.29868@blkbox>
- Date: Fri, 18 Dec 1992 15:45:05 GMT
- Lines: 37
-
- In article <1992Dec17.231538.29868@blkbox> rbarnett@blkbox (Rick Barnett) writes:
- >goyal@utdallas.edu (MOHIT K GOYAL) writes:
- >>Hello.
- >>I am curious as to which is better for OS/2, EISA/MCA or VL-Bus.(Vesa Local Bus)
- >>Here is my setup:
- >>single user on a stand alone pc.
- >>that's pretty much it.
- >>I will be running lotsa programs..games, word processors, Pascal, Mathcad,
- >>whatever else.
- >>Anyways, I would like to know which would offer better performance.
- >
- >EISA is 32 bits wide with bus mastering but only runs at 8 MHz. Video and
- >hard disk controller cards are few and expensive.
- >VESA is 32 bits wide with bus mastering and runs at CPU speed (up to 50 MHz).
- >A fair number of manufacturers have announced or already produce VL-Bus cards,
- >and the prices aren't much higher than the ISA versions of the same cards.
-
- >Blair R. Barnett u5c95@lfhp113.hso.link.com
- >Sr. Systems Engineer 522-0045@mcimail.com
- >CAE-Link Corporation rbarnett@sugar.NeoSoft.com OR sugar!rbarnett@uu.psi.com
- >Houston TX Visit Space Center Houston! Land the Space Shuttle!
-
- I thought this topic had been beaten to death already :-)
- An EISA system will get more tasks done per time unit than a local-bus
- thing b e c a u s e the CPU and bus aren't tightly coupled (and for a
- couple of other technical reasons).
- That said, as long as you only run interactive applications, one
- at a time, local-bus video cards will give you reasonable performance
- at a much lower cost than EISA.
- If you don't agree, go study computer architecture, run a couple of
- simulations, or put an EISA and a local-bus database server side by
- side and time them.
-
-
- --
- Ola Sigurdson | Internet: d89os@efd.lth.se |
- [Hi! I'm a mutant .signature virus. Let me kill your old .signature virus.]
-