it is the brand name of wireless mobile computing technology launched by Intel for notebook computers on March 12th, 23. Centrino is the abbreviation of two words: Centre and Neutrino. It consists of three parts: mobile processor (CPU), related chipset and 82.11 wireless network function module. Centrino brand is the first time that Intel has named a series of technologies with one name. Intel Centrino mobile computing technology is an innovative technology used by a new generation of notebook computers. The notebook computer equipped with this technology will make users break away from the constraints of cables and truly work, study, relax and surf the Internet on the move. And while increasing the battery life, the notebook will also become light and thin. This innovative technology not only brings brand-new performance and low power consumption to the notebook system, but also integrates wireless communication and security functions into the local chip.
From the product entity, Centrino mobile technology consists of three parts, namely Centrino technology consists of chipset, mobile CPU and wireless LAN chip:
Intel Pentium M processor
Intel 855 series chipset
Pro/wireless network connection
The new mobile CPU is the most striking, which abandons Intel's previous practice of adding MMobile (mobile) after the number of desktop CPU to indicate the mobile version. The reporter interviewed Yang Xu, general manager of
Intel China Company on the spot. He confirmed to the reporter that this new naming method will mark the development of Intel's mobile chip as an independent product sequence, and its product architecture will no longer be parallel to the desktop CPU. The frequency of the first Banias chip is 1.6GHz. Intel also gives the comparison results between it and the "system performance value" of 2.4GHz P4-M chip. In this test conducted by Intel itself, the score of Banias chip is more than 15% higher than that of P4-M chip. Mr. Mcdonald also pointed out that the Banias chip has "excellent performance" due to the use of "new advanced instruction system, micro-operation merging technology and 1MB cache" and 4MHz system bus. Banias chip has outstanding advantages in energy consumption, calorific value and volume. In the test results given by Intel, the battery with the same capacity, the use time of notebook computer using Banias chip reached 6 hours and 6 minutes, while the use time of Intel notebook computer special chip Pentium 4-M with mobile technology was only 2 hours and 52 minutes, and the battery life was more than doubled. It has two characteristics: compared with Pentium 4, Centrino has the functions of wireless connection and mobile communication. With the notebook computer with Centrino installed, users can surf the Internet wirelessly where wireless connection points are installed (or hot spots). The second feature is to extend the battery power supply, and the longest charge can reach 7 hours < P > Generally speaking, the main features of Centrino technology are: integrating direct support for wireless LAN Wi-Fi; Reduce energy consumption, prolong battery life and excellent computing performance. These three points are also the most important development trends of notebook computers this year.
what is centrino generation 2?
SONOMA is Centrino 2!
the difference between the 2nd generation and the 1st generation:
CPU:
The CPU is the Pentium M processor that we are already familiar with, but it has been upgraded from the early Banias core to the current Dothan core. You may only know that the second-level cache of the latter is 2M more than that of the former. In fact, there are some obvious advantages, not only in the improvement of the second-level cache. The external frequency supported by Dothan is 533MHZ, which is much faster than that of Banias' 4MHZ, which can also explain why the starting frequency of Dothan is much higher than that of Banias. The process of Banias is 13 nm, while that of Dothan is 9 nm. Relatively speaking, the latter saves more electricity and further reduces the calorific value than the former. Correspondingly, it also has Celeron version, and the second cache is reduced to 1M, and Intel Speedstep power saving technology that Intel is proud of is cancelled.
chipset:
compared with the three major components, the chipset changes the most. The chipset of the new Centrino II was upgraded from 855M to 915M. Compared with the 855M chipset, the 915M chipset has brought too many new functions, which can be said to make us shine.
firstly, the 915M chipset fully supports the external frequency of 533MHZ, which can give full play to the advantages of Dothan CPU speed, without the embarrassing situation like that on the 855M chipset.
secondly, the 915M chipset fully supports DDR2 memory. The so-called DDR2 memory is a dual-channel DDR memory, which can be twice as fast as the DDR memory we usually use in theory, but the actual application data is about 4% higher. However, the dedicated DDR2 memory on laptops is still relatively expensive, and it is not recommended to upgrade in the near future. Unfortunately, the 915M chipset is not backward compatible with DDR memory. I'm afraid that after the memory in our laptop "retires", we can no longer play the residual heat.
the p>915M chipset also supports the brand-new PCI-Express X16 bus graphics accelerator card. With the PCI-Express bus, we can replace our graphics card as easily as replacing PC card equipment-we can upgrade our graphics card just like our desktop computer, which is a great good news! After a few years of using this notebook, with the growth of software demand, the graphics card is often unable to upgrade (people's memory, hard disk and even CPU can be changed quickly), which has become a heart disease in our friends' hearts. In the future, our graphics card will be made similar to the size of a credit card, as long as we insert it into the PCI-Express slot, and at most, we will install a driver. Writing here, the author can't help thinking a lot, and then look at his T4 or AGP 4X graphics card, which is really sighing and helpless. However, we also enjoyed the "wireless infinity" for a year and a half before others, and we also have a lot of balance in our minds.
the p>915M chipset also supports SATA hard drives. The so-called SATA hard disk, that is, serial ATA hard disk, has exactly the same standard as the serial ATA standard of a computer, so you can refer to the relevant materials. Limited to space, the author will not expand here. Fortunately, his old man's house has not completely abandoned the traditional ATA hard disk, otherwise it would be too bad.
the internal transmission speed of the p>915M chipset has also been greatly improved. I don't want to use the data of test software here to explain that the result of a test software is not 1% accurate, and the second is that the effect produced by different hardware configurations is different, and the lateral comparability is relatively poor.
there are three types of p>915M chipsets: 915PM, 915GM and 915GME. Although these three types of chipsets are all owned by the 915M chipset, there are still big differences among them. 915PM doesn't have integrated graphics card, so it needs extra loading, so it is generally used as a medium and high-end notebook computer. The 915GM integrates the Intel ExtremeGraphic2 display chip in the south bridge chip of the chipset. According to Intel's old man, the performance is more than twice as high as that of the previous generation. Anyway, no matter how you mention it, you still have to enjoy the main memory, which is slightly inferior to the contemporary discrete graphics card anyway. The 915GME chipset can be said to be a simplified version of the 915GM chipset, which is specially tailored for Celeron version of CPU. On the basis of 915GM, the support for DDR2 memory and SATA hard disk is deleted, which depends on your needs.
wireless network card:
finally, it should be the protagonist of "wireless your infinity"-wireless network card appeared. The wireless network card of Centrino generation is only IEEE82.11b standard, but it has soared to IEEE82.11a/b/g tri-band wireless network card in the second generation, which can be said to have covered all the mainstream wireless network standards in the world. In fact, these wireless network standards are not new technologies. They have existed for a few years, but the users are not as imposing as they are now. Relatively speaking, the ultimate speed that the three-band wireless network card can achieve is faster, and it is also better from the perspective of security.
it seems that the second generation of Centrino is more "the waves behind the Yangtze River push the waves before" than the first generation. So how can we tell the difference? You know, the labels are the same. The author gives you two methods, corresponding to friends with good computer skills and very general ones respectively. For friends with good computer skills, they can directly access the BIOS (basic input/output system) to check the CPU, chipset and wireless network card. If your computer level is fairly average and you can enter the system, open the "Processor" tab (CPU), "System Devices" tab (chipset) and "Network Adapter" tab in Device Manager to view it, and it will be clear to the world.