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Intel Pentium 4 540 (3.2E) Socket LGA 775 Processor Review

Intel Pentium 4 540 (3.2E) Socket LGA 775 Processor Review - PCSTATS
Abstract: The Pentium 4 3.2E LGA775 (Land Grid Array) Socket 775 processor is based on the same 0.09 micron manufacturing process as its Socket 478 Prescott cousin.
 85% Rating:   
Filed under: CPU / Processors Published:  Author: 
External Mfg. Website: Intel May 11 2005   Colin Sun  
Home > Reviews > CPU / Processors > Intel Pentium 4 540

CPU Features

Intel introduced many new features with the Prescott core to try and quash the negative affects of its longer pipeline. For instance, the L1 data cache was doubled from 8KB to 16KB, and it is now 8-way associative instead of 4-way. Intel also increased the L2 cache from 512KB to a full 1MB.

As mentioned earlier, cache helps to hide the execution pipeline which has been increased by more than 50%, up from the 20 stages on the Northwood core to a full 31 stages. On-core cache memory keeps frequently accessed data close to the processor so it can be retreived quickly, much, much faster than would be the case from the main system memory or hard disk.

A feature that's found within Prescott Pentium 4 CPUs (and currently nowhere else) is SSE3 technology. SSE3 adds 13 new instructions to the core which should improve application performance once programs are written to take advantage of the new instruction set.

With Intel's sway, I think it's safe to assume software developers will adapt soon, after all SSE and SSE2 friendly programs were quick to show up. SSE3 also works in conjunction with HyperThreading technology to improve the overall efficiency of the processor. AMD does not currently support SSE3 in its processor products, but the company soon will.

The chip we'll never know... Tejas

As I'm sure you're aware, Intel's next generation Pentium 4 processor, which was code named Tejas, was cancelled as was the whole Pentium 4/Net Burst architecture! This was done because of the problems associated with 0.09 micron manufacturing

Intel simply could not bring down the power consumption requirements of the Pentium 4, and the numbers floating around the web had it at around 150W! Another problem with drawing that much power is the amount of heat the processor produces. Even with high-end air cooling in a well ventilated case, temperatures would soar well past the 50 degree Celsius mark.

A second nail in the coffin of Tejas was reportedly the ongoing success of AMD's 64-bit processor lines, the Opteron and Athlon 64/FX. These 64-bit chips revolutionized the industry by supporting both 32 and 64 bit software interchangeably. Up until very recently, Intel has been suffering from the lack of an equivalent product, and the Tejas core was killed partially to throw more support behind Intel's effort to release its own 64-bit/32-bit compatible processor under the label of EMT64 - Extended Memory Technology 64-bit.

At the time, there was no easy fix in sight for these issues. Intel stood to lose a lot of money so it took the unusual step of cancelling a whole line and adopting the more efficient Pentium M core into its desktop roadmap.

Consequently, Intel's dual core Pentium 4 desktop processors have just been introduced, and are primed and ready to offer serious competition to AMD's dual core Athlon64 X2 processors. Had Tejas gone ahead, Intel may have been shut out of game in this regard.

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Contents of Article: Intel Pentium 4 540
 Pg 1.  Intel Pentium 4 540 (3.2E) Socket LGA 775 Processor Review
 Pg 2.  — CPU Features
 Pg 3.  Model Numbers
 Pg 4.  Intel's chipsets for Socket 775: 915P/G and 925X
 Pg 5.  The 915G/P chipset
 Pg 6.  The 925X chipset
 Pg 7.  Test setup and SysMark 2004
 Pg 8.  Benchmarks: Winstone 2002, Super Pi
 Pg 9.  Benchmarks: Sandra 2004, POVray
 Pg 10.  Benchmarks: ScienceMark, CINEBENCH 2000
 Pg 11.  Benchmarks: PCMark04, 3DMark2001
 Pg 12.  Benchmarks: 3DMark05, AquaMark3
 Pg 13.  Benchmarks: Comanche 4, UT2003
 Pg 14.  Benchmarks: UT2004, Doom3
 Pg 15.  Overclocking and conclusion

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