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Users questions:I would like to understand more about the various knowledge-point CPU! 7,777,771. GHz frequency, also called clock frequency in MHz, used to represent the CPU's processing speed. The frequency = CPU FSB multiplier factor. Many people think that frequency to determine the CPU's speed, this is not just a one-sided,And the server is concerned, this understanding has gone wrong. So far, there is no one formula to determine the frequency and the actual realization of the computing speed of the numerical relations between the two, even two processor manufacturers Intel and AMD, at this point there are a great controversy, we from Intel ofProduct development trends, we can see that Intel is very focused on strengthening the development of its own frequency. Like other processor manufacturers, some people have took to do a quick comparison Transmeta 1G, 2G its efficiency is equivalent to the Intel processor. Therefore, CPU's frequency and the actual computing power of CPUIs not directly related, in CPU frequency, said digital pulse signal within the shock speed. In Intel's processor products, we can also see examples of this: 1GHzItanium chip can behave almost the same with 2.66GHzXeon * OpteronFast, or 1.5GHzItanium2 about as fast as with 4GHzXeon * Opteron. CPU CPU operation speed depends on various aspects of the pipeline performance. Of course, the frequency and the actual operation speed is the only performance of that CPU frequency is onlyOne aspect of performance, and do not represent the overall CPU performance. 2. FSB FSB is the CPU's base frequency, the unit is MHz. CPU FSB motherboard determines the speed block. Plainly, in the desktop machine, we are talking about overclocking, all our CPU's FSB (ex-general,CPU multiplier is locked to) believe this is well understood. But in terms of server CPU, overclocking is absolutely not allowed. Speaking in front of the motherboard CPU determines the speed, the two are synchronized, if the server CPU overclocking, and changed the FSB will result in asynchronous operation,(Desktop motherboards to support many of the asynchronous operation) that would cause the entire server system instability. Most current computer system memory and the motherboard FSB is running between the synchronous speed, in this way can be understood as CPU FSB and memory is connected directly through, to achieve synchronization between the twoRunning. FSB and the front-side bus (FSB) frequency can easily be confused, the following description we talk about the front-side bus difference between the two. 3. Frontside bus (FSB) frequency front-side bus (FSB) frequency (the bus frequency) is a direct impact on CPU and memory speed of direct data exchange. AArticle formula can be calculated that the data bandwidth = (bus frequency bandwidth) * 8, the maximum bandwidth of data transfer depends on all the same width of data transmission and transmission frequency. For example, now supports 64-bit Xeon Nocona, front side bus is 800MHz, according to the formula, its data transmissionMaximum input bandwidth is 6.4GB * seconds. FSB and the front-side bus (FSB) frequency difference: front-side bus speed refers to the speed of data transmission, FSB is a synchronous operation between the CPU and the motherboard speed. In other words, 100MHz FSB referred specifically to digital pulse signal in shock 10 million times per second; And 100MHz front side bus CPU per second refers to the amount of acceptable data is 100MHz 64bit 8Byte * bit = 800MB * s. In fact, "HyperTransport" the emergence of the framework, so that the actual meaning of the total front-endLine (FSB) frequency changes. Before we know IA-32 architecture must have three important components: Memory Controller Hub (MCH), I * O Controller Hub and PCIHub, as is typical Intel chipset Intel7501, Intel7505 chipset for dual Xeon processors tailored, they contain MCH provided for the CPU frequency is 533MHz front side bus, with DDR memory, front side bus bandwidth of up to 4.3GB * seconds. However, while improving performance with the processor to the system architecture has brought a lot of problems. The "HyperTransport" architecture not only solves the problem, but also effectively improve the bus bandwidth, for example AMDOpteron processor, flexible HyperTransportI * O bus architecture, it integrates the memory controller, the processor is not
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