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From: mikes@iuvax.cs.indiana.edu (Michael Squires)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: Comparing 486 to 386 Systems
Summary: some numbers
Keywords: 486 386
Message-ID: <1991Apr7.170017.23962@news.cs.indiana.edu>
Date: 7 Apr 91 22:00:06 GMT
References: <1991Apr4.204923.29300@agate.berkeley.edu> <27865@neptune.inf.ethz.ch> <1991Apr6.045408.15395@agate.berkeley.edu>
Organization: Computer Science, Indiana University, Bloomington.
Lines: 20

In article <1991Apr6.045408.15395@agate.berkeley.edu> c60b-1eq@e260-1d.berkeley.edu (Noam Mendelson) writes:
>
>Perhaps, but since the majority of MSDOS software contains 16-bit code,
>the 486 does not offer much realistic speed improvement.

My 486/25 under DOS clocks at about 15,000 Dhrystones/sec.  This is about 2x
my 386/20 with 64K cache; I would expect a 386/33 with cache to clock at about
the same speed.

The same system running SCO UNIX V 3.2.1 clocks at 21,000 Dhrystones/sec.
(SCO UNIX runs in 386 mode, and compiler generates 32-bit 386 code).

DOS applications running under DOS-Merge run at about the speed of 386/20
(DOS applications running under DOS Merge on the 386/20 run at the speed 
of a 10MHZ 286).
-- 

Mike Squires (mikes@iuvax.cs.indiana.edu)     812 855 3974 (w) 812 333 6564 (h)
mikes@iuvax.cs.indiana.edu          546 N Park Ridge Rd., Bloomington, IN 47408
Under construction: mikes@sir-alan.cica.indiana.edu