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105 bytes added ,  18:49, 26 October 2021
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[[File:Mmxcpu1.jpg|thumb]]
 
[[File:Mmxcpu1.jpg|thumb]]
 
[[File:Mmxcpu2.jpg|thumb]]
 
[[File:Mmxcpu2.jpg|thumb]]
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[[File:Pentiumbox.jpg|thumb]]
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[[File:Pentiumpin.jpg|thumb]]
    
First models of the Pentium line clocked in at 60/66MHz. Most CPUs will run a clock speed between 75-233MHz.
 
First models of the Pentium line clocked in at 60/66MHz. Most CPUs will run a clock speed between 75-233MHz.
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microprocessor that executed 3 to 4 million instructions per
 
microprocessor that executed 3 to 4 million instructions per
 
second (MIPS). Available in speeds ranging from 16 MHz up to 33
 
second (MIPS). Available in speeds ranging from 16 MHz up to 33
MHz, the 80386 addresses up to 4 gigabytes of physical memory,
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MHz, the [[Intel 80386]] addresses up to 4 gigabytes of physical memory,
 
and up to 64 terabytes of "virtual memory" (a technology
 
and up to 64 terabytes of "virtual memory" (a technology
 
borrowed from mainframe computers that allows systems to work
 
borrowed from mainframe computers that allows systems to work
 
with programs and data larger than their actual physical memory.)
 
with programs and data larger than their actual physical memory.)
   −
The 80386 provided for true, robust multitasking and the ability
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The [[Intel 80386]] provided for true, robust multitasking and the ability
 
to create "virtual 8086" systems, each running securely in its
 
to create "virtual 8086" systems, each running securely in its
 
own 1-megabyte address space. Like its predecessors, the i386 DX
 
own 1-megabyte address space. Like its predecessors, the i386 DX
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cache memory, and cache controller--a total of 1.2 million
 
cache memory, and cache controller--a total of 1.2 million
 
transistors--all on a single chip. Operating at an initial speed
 
transistors--all on a single chip. Operating at an initial speed
of 25MHz, the Intel486 DX CPU processed up to 20 MIPS. At its
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of 25MHz, the [[Intel 80486]] DX CPU processed up to 20 MIPS. At its
 
current peak speed of 50 MHz, the Intel486 DX CPU processes up
 
current peak speed of 50 MHz, the Intel486 DX CPU processes up
to 41 MIPS. By incorporating RISC principles in its CPU core
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to 41 MIPS. By incorporating [[RISC]] principles in its CPU core
(specifically, instruction pipelining), the Intel486 DX CPU is
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(specifically, instruction pipelining), the [[Intel 80486]] DX CPU is
 
able to execute most instructions in a single clock cycle. In
 
able to execute most instructions in a single clock cycle. In
 
spite of these powerful new features, the Intel486 DX
 
spite of these powerful new features, the Intel486 DX
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generation circuitry, and interface to the data cache.
 
generation circuitry, and interface to the data cache.
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While the Intel486 microprocessor incorporated a single 8 Kbyte
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While the [[Intel 80486]] microprocessor incorporated a single 8 Kbyte
 
cache, the Pentium processor features two 8K caches, one for
 
cache, the Pentium processor features two 8K caches, one for
 
instructions and one for data. These caches act as temporary
 
instructions and one for data. These caches act as temporary