What does the P4 2.4GHZ CPU (speed) mean? Times/sec hz/s operation Speed

1GHZ=1000MHZ1MHZ=1000KHZ1KHZ=1000HZ calculates the time unit of the pulse signal period and the corresponding conversion relationship is: s (seconds), MS (MS), μs (microseconds), NS (nanosecond). Among them: 1s=1000ms,1 ms=1000μs,1μs=1000ns. P4 2.4ghz, refers to the CPU's main frequency. The CPU clock frequency (cpu clock speed) of the CPU core. What is commonly referred to as a CPU is how many MHz, and this number of MHz is "CPU frequency." Many people think that the CPU clock is the speed of its operation, it is not. The CPU frequency indicates that the speed of the digital pulse signal oscillation in the CPU is not directly related to the actual computing ability of the CPU. There is a certain relationship between the main frequency and the actual operation speed, but there is not a definite formula to quantify the numerical relationship of the two, because the CPU's computing speed also depends on the performance index of the CPU's pipeline (cache, instruction set, number of CPU bits, etc.). Because the main frequency does not directly represent the speed of operation, so under certain circumstances, it is likely that the high frequency of CPU actual operation of the phenomenon of low speed. The frequency is only one aspect of CPU performance, not the overall performance of the CPU. Let's talk about the hard drive. 100G, that is, the amount of data stored on the hard disk. The capacity of the hard disk is in megabytes (trillion) and GB (gigabit). The early hard drive capacity was low, mostly in megabytes (MB), the world's first disk storage system was built by IBM in September 1956 with only a paltry 5MB, and today's hard drive technology is rapidly developing hundreds of GB of capacity to enter the hands of home users. The capacity of the hard disk is 40GB, 60GB, 80GB, 100GB, 120GB, 160GB, 200GB, hard disk technology is still moving forward, the larger capacity of the hard disk will continue to be introduced. Speed (rotationl speed) is the speed of rotation of the motor spindle in the hard disk, that is, the maximum number of revolutions that can be achieved in a minute. Speed is one of the important parameters of the hard disk, it is one of the key factors to determine the internal transmission rate of hard disk, to a large extent directly affect the speed of the hard disk. The faster the speed of the hard disk, the faster the hard drive to find files, the relative speed of the drive is also improved. The speed of the hard disk is expressed as the number of revolutions per minute, the unit is expressed as RPM,RPM is revolutions perminute abbreviation, is the RPM. The larger the RPM value, the faster the internal transfer rate, the shorter the access time, the better the overall performance of the hard disk. The spindle motor of the hard drive rotates the disc at high speed, creating buoyancy that floats the head above the platter. To take the sector of the data to be accessed below the head, the faster the speed, the waitThe shorter the room is. Therefore, the speed of the drive to a large extent determines the speed of the hard disk. Domestic ordinary hard disk speed generally has 5400rpm, 7200rpm two kinds, 7200rpm high-speed hard disk is now the preferred desktop users.

What does the P4 2.4GHZ CPU (speed) mean? Times/sec hz/s operation Speed