from FaxBACK(TM) document #7032

32-Bit Processor Benchmarks: i386(TM) to Pentium(TM) Processor

 				SPEC-	SPEC-	Dhrystone          iCOMP(TM)
				int92	fp92	MIPS  V1.1
Intel CPUs			(Index)	(Index)	(VAX MIPS)	     Index
============================================================================

i386(TM) SX-16			2.4	0.9	     3.0		22

i386 SX-20			3.5	1.3	     3.6		32

i386 SL-25			3.2	1.3	     4.5		41

i386 DX-25			6.5	1.9	     8.0		49

i386 DX-33			8.4	3.0	     11.4		68

i486(TM) SX-20			10.7	4.9	     16.5		78

i486 SX-25			14.2	6.7	     20.2		100

i486 SX-33			19.5	8.9	     26.9		136

i486 DX-33			19.5	8.9	     26.9		166

i486 DX2-50			25.7	12.2	     40.5		231

i486 DX-50			27.9	13.1	     41.4		249

i486 DX2-66			32.4	16.1	     54.5		297

Pentium(TM) Processor-60	58.3	52.2	     100.0		510

Pentium(TM) Processor-66	64.5	56.9	     111.6		567	


Benchmark data for the OverDrive(TM)-33 Processor will have the
same values as the i486 DX2-66

Benchmark data for the OverDrive-25 Processor will have the same
values as the i486 DX2-50


* Note that the iCOMP index is a compilation of weighted 16-bit
and 32-bit benchmarks


*,The following test configurations apply to all benchmarks
except iCOMP index


* Please note that the SPECfp92 benchmark data for the i486 SX
and all i386 CPU's are achieved with a system configured with 
an  external math coprocessor.  


*386/486 Unix Compilers:	
MetaWare High C R2.3p Compiler, Microway NDP-386 FORTRAN 2.1.0 Compiler

*Compilers for Pentium processor:
Intel C Compiler, Intel FORTRAN Compiler

System Configurations:
*All systems configured with 8 MB memory
i386SX-16:  	Compaq Deskpro, 16MHz i387SX Math Coprocessor, 
	    	ISA Bus, no external cache

i386SX-20:  	IBM PS/2 Model 57, 20MHz i387SX Math Coprocessor, 
	    	MCA Bus, no external cache

i386SL-25:  	configuration not available

i386DX-25:  	Intel 386/302, 25MHz i387DX Math Coprocessor, 
	    	ISA Bus, 64 KB write-through cache

i386DX-33:  	Compaq 386/L 386/33, 33MHz i387DX Math Coprocessor, 
	    	EISA Bus, 64 KB write-back cache

i486SX-20:  	AST Premium II, 20MHz i487SX Math Coprocessor, 
	    	EISA Bus, no external cache 

i486SX-25:  	Compaq/M 486SX-25, 25MHz i487SX Math Coprocessor, 
	    	EISA Bus, no external cache

i486SX-33:  	Compaq/L 486/33, 33MHz i487SX Math Coprocessor, 
 		EISA Bus, 128 KB write-back cache

i486DX-33:  	ALR 4E, EISA Bus, 128 KB write-back cache

i486DX2-50: 	Intel Xpress, EISA Bus, 256 KB write-back cache

i486DX-50:  	Compaq/L 486/50, EISA Bus, 256 KB write-back cache

i486DX2-66: 	Intel Xpress, EISA Bus, 256 KB write-back cache

Pentium(TM) Processor-60:   Intel Xpress, EISA Bus, 256KB
write-back cache

Pentium Processor-66:   Intel Xpress, EISA Bus, 256KB write-back
cache


Benchmark Definitions:

SPECint92 allows for integer performance predictions using an
instruction mix for commercial applications in a business
environment.  The SPECint92 ratio represents the geometric mean
of several C programs.

SPECfp92 allows for floating-point performance predictions under
a technical environment for scientific/engineering
applications.The SPECfp92 ratio represents the geometric mean of
several FORTRAN prorgams.    

The Dhrystone V1.1 benchmark is an industry standard designed to
measure system programming performance.  The benchmark includes
weighted percentages of procedural calls, loops, integer
assignments, integer arithmetic and logical operations.  It
evaluates not only microprocessor performance but also
compilerefficiency.  To determine the Dhrystone V1.1 MIPS
rating, the Dhrystone V1.1 result is divided by the number 1757
(the Dhrystones result achieved on a VAX 11/780).

iCOMP is a new rating system designed to rate the relative
performance of Intel's CPUs.  Indicators like MHz, MIPS and
SPECMarks can bevery misleading.  Varying the system
configuration as well as the software running on it may change
the benchmark result.  The iCOMPindex is a simple expression of
a number of complex performance measurements and concepts.  More
information on the iCOMP index can bo obtained by ordering
FaxBACK document #7046

References:

Intel486DX2 Microprocessor Performance Brief, Literature Order
#241254

Pentium(TM) Processor Performance Brief, Literature Order #241557

The Intel iCOMP Index, Literature Order #241460 

SPECMarks are trademarks of the Standard Performance Evaluation
Corporation	

i386, i387, i486, i487, Pentium and iCOMP are trademarks of
Intel Corporation.