Pentium III isIntelThe x86 (more accurately, i686) architecture microprocessor was launched on February 26, 1999.The newly launched version is very similar to the earlier Pentium II. The most notable difference isSSEinstructionsAnd the controversial serial number is added in the manufacturing process of each chip.Same as Pentium II, it also has low orderCeleronVersion and higher levelXeonedition.Pentium III was finally replaced by Pentium 4. The improved design of Pentium III is nowPentium M。
The original version of Katmai is very similar to the Pentium II (both use 0.25 μ m process). The only difference is that SSE is added, and the first level cache controller is improved (resulting in slightly better performance than the later Pentium II). The half speed 512K second level cache is still used.The first speeds are 450 and 500 MHz.Two more versions are: 550 MHz launched on May 17, 1999;600MHz was launched on August 2, 1999.On September 27, 1999, Intel launched 533B and 600B versions, which are 533/600MHz respectively, but use 133MHz front-end bus, while other previous versions use 100MHz.Katmai uses the same slot design (Slot1) as Pentium II.
Coppermine
Since the second version of Copper, the new Socket 370 (FC-PGA) interface has been widely used. Because of the 0.18 μ m process, INTEL can integrate a low latency 256KB full speed CPU chipL2 CacheUnder the competitive pressure of AMD Athlon processors, Intel reworked the internal design of the chip, and finally corrected the well-known instruction pipeline delay problem.As a result, the efficiency of processing instructions has increased by 30%, which is a great improvement over Katmai's efficiency.
The initial execution speed of Pentium III Copermine is 500, 533, 550, 600, 650, 667, 600 and 733MHz, which was launched on October 25, 1999.From December 1999 to May 2000, Intel launched Pentium III with speeds of 750, 800, 850, 866, 900, 933, and 1000MHz (1GHz).Some versions use 133MHz with better performancefsb 。In order to distinguish from the external frequency 100MHz Pentium III, the external frequency 133MHz version suffix is EB.
INTEL, which fell behind for the first time in the frequency war, launched a 1.13GHz version in the middle of 2000, but was found to have serious design defects and eventually recalled all of them.The design defect is due to integration into the internalcacheSome applications are locked because they cannot operate at a speed above 1GHz.This makesIntelIt took at least 6 months to solve the problem, and the 1.1 and 1.13GHz versions were launched in 2001.Pentium III Copermine 1.13G is also known as "copper slag".
Coppermine-T
FC-PGA2 Encapsulated Copper CPUPinUnlike Coppermine, it is not compatible with FC-PGA motherboard.
Tualatin
The last version of Tualatin is actuallyIntel0.13 μ m process test.At this time, INTEL has established the mainstream market position of Pentium 4.This makesTualatinHas become a flash of Epiphyllum.
The Pentium III Tualatin was launched from 2001 to early 2002, with the main frequencies of 1.0, 1.13, 1.2, 1.26, 1.33 and 1.4 GHz respectively. It also uses 256K L2 cache.However, due to FC-PGA2 packaging, it is not compatible with the previous motherboard.
But INTEL immediately found that the Pentium III Tualatin has better performance than the Pentium 4 with the same main frequency.In order not to repeat the previous mistake of low-end Celeron competing with the mainstream Pentium II, the highest dominant frequency of Tualatin stops at 1.4 GHz, that is, the frequency just launched by Pentium 4.But later, the Pentium M with the same architecture reached 1.7GHz.
The output of Tualatin for the desktop market is very small. Most of Tualatin, especially the derivative version of 512KB L2 cache (called Pentium III-S), is used in the server market.
Tualatin's core is toOregonTualatin Valley and Tualatin River.
