TechSpot named the ten most common misconceptions about computer hardware. And explained why in reality everything is different than many people think.
The first myth says that processors can be compared with the number of cores and clock speed. However, in reality there are so many different variations with different parameters that it is impossible to evaluate the CPU by such simple criteria. Of course, a six-core processor will be faster than exactly the same quad-core, but modern chips are too complex and differ from each other in a number of parameters. You need to take into account the power consumption, and the specifics of individual tasks performed by the processor, and many other things.
Another mistake – clock speed is the most important indicator of performance. However, in reality, two processors in the same price range running on the same frequency can differ significantly in performance.
The third myth indicates that the CPU is the main chip in the device. In fact, the CPU is only part of the overall system. Now everything is evolving along the path of heterogeneous computing systems that use different types of computing units.
Through the fourth mistake many criticize Intel, which still uses 14-nm technology for its chips. But experts write that “measuring” chips by technical process is also not entirely true. As long as the two chips are within about the same generation, the one with fewer transistors will not necessarily have more advantages.
The fifth myth refers to the number of GPU cores. It is also incorrect to compare GPUs by this indicator. The sixth lie similar to the previous ones, but already refers to FLOPS. The fact is that when measuring this indicator, important factors can be ignored, such as memory bandwidth. In addition, companies can fool and overestimate the numbers.
The seventh myth – ARM creates chips. However, this company does not make physical chips, it develops schemes for their operation. The eighth lie concerns the confrontation of ARM and x86. But we must understand that these two architectures do not compete, they serve different purposes. x86 allows you to focus on maximum performance, and ARM – on energy efficiency.
The ninth myth says that GPU is faster than CPU as well the tenth – that processors will always only get faster. The fact is that with the reduction in the size of the transistors there are fundamental problems that are difficult to overcome. In addition, there is an acute issue with the growth of energy consumption and the limits of cooling systems. Most likely, we will not see the same rate of performance growth in processors for a long time, which was observed earlier.