What made the pentium successful...
Channel: Tech. Inc
Date: 2019-07-02

The Pentium is a name known all around the tech industry, However it's architectural history
is undisclosed. Here we are gonna talk about it!
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Video Transcript:

Intel Pentium, The one processor that is known all around personal computer.
Though it might seen as a it would belong to a basic build. It had it's time when it shined.
And we are gonna look at it today

The original Pentium is an extremely modest design by today's standards, Being introduced in 1993
it had an transistor Count of 3.1 million with Clock speed at 60 and 66 MHz
and a cache size of 16KB 

The only thing it had as an advantage was with the bulky x86 compatiblity it had which came with 
enormous sacrifices of performance, power consumption

The Original Pentium was a slow performer. even beaten by the i486 (it's predescessor) 
the big reason being that a large part was dedicated solely for x86 support.


The Pentium had a two five-stage integer pipelines, which Intel designated as U and V,
 and one six-stage floating-point pipeline. The chip's front-end does
 dynamic branch prediction a form of technique to predict the next work to be done and doing it before
so as to make the CP much efficient


The problem with this structure is that U and V integer pipes were not fully symmetric,
The pipe U is slightly more capable and contained a shifter that V doesn't. The pipes are also not 
independent, there are only certain instructions on which the two pipes can work parallel

all this meant the processor had a new but an inefficient architecture.


Inspite all of this the success for the pentium brand was solely attributed to it's timing.
Intel managed to introduce the Pentium chip between Microsoft's release of Microsoft Windows
 3.1 and Windows 3.11, but it was Microsoft's Windows 95, launched on 22 August 1995,
 that really helped lodge the Pentium in the public consciousness.
 

This led onto the creation of the wintel machine, a machine with the OS and processor combination of
windows and intel. This Combination went on to dominate the PC industry for the upcoming years with the pentium 2's and 3's


Fast forward to the 2000s and comes the pentium 4, One of the most controversial processors in intel lineup.
The earlier pentium 4 microarchitecture advantages were unclear, Though the pentium 4 ran faster on well-optimized applications,
it ran much slower on old/legacy applications, even getting beaten by it's own predecessor, the Pentium 4 . It also emitted more power and heat
As a result, the Pentium 4 was hated by developers, as it posed a new set of code optimization rules
Computer-savvy buyers also avoided Pentium 4 PCs due to their price premium, questionable benefits, and initial restriction to only one type of RAM.


The pentium 4 processors too had several problem, especially with earlier processors in the lineup with the Willamette and netburst architecture 
Computers using the P4 processors require Rambus Ram which cost more than the regular SDRAM and it used by most of the processors at the time with the athlon and p3's and p2's
The Rambus memory system has been found to be slower in several cases than SDRAM. And it is also even expensive than SDRAM.



Another drawback of the Pentium 4 processors is that they do not support the multiple instruction decoder or barrel shifter
 like older pentium processors did. Hence, this means that code optimized for the earlier Pentium processors 
that is designed to take advantage of these performance enhancing techniques will actually run slower on the Pentium 4, which lacks these systems.



Another problem is that The Pentium 4 processors consume more power than other processors of similar performance.
 This means special measures must be taken to remove the heat generated by the processor from the chip and from the enclosure. 
In addition, computer systems that use P4 processors require larger power supplies. Thus requiring more power and and expensive PSU's

As there is more power requirement the temperature also increases,As temperature increases, the temperature sensors on the processor
 will reduce the clock speed to protect the processor. 
In a system where the processor is not adequately cooled, 
the processor will not be able to achieve it's potential