A dual-core chip 1 GHz would have the same performance from a single core 2 GHz?

12 December 2010 | In Tips | 4,2 thousand views | By

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processadores intelCommon sense may say yes, but in the world of PCs this relationship of 1 + 1 is not always equal to 2. Until the end of the last century, Most processors had only one way of processing and were able to execute only one command sequence (or thread) at a time. Mas como isso é feito em uma speed muito alta, tem-se a impressão de que todos os programs rodam ao mesmo tempo e, When any program gives a "choking", isso pode ser sinal de que o processor está sobrecarregado, problema que pode ser resolvido com um chip de maior performance.

At this time, the simplest and most efficient way to make a faster was accelerating processor is your clock (Hence the scale of GHz) which requires the application of more energy to the processor that generates undesirable enough as a byproduct: more heat.

The problem is that in mid- 2001 companies like Intel began to realize that this strategy of winning performance by generating more heat was coming at its limit, with gloomy forecasts until well that in 2005 faster processors work at temperatures as high as an atomic power plant, in 2010 they would be hotter than the output of a rocket and in 2015 He would reach the surface temperature of the Sun. And there wouldn't be that resists processor cooler.

Like this, Intel initiated a series of studies and reached the conclusion that the solution would not be in the chips on chips faster and smarter. Hence was born the idea of implementing more than one via their processing chips, primeiro na forma da technology HT (HyperThreading) that emulated two logical processors from a single core, followed by the first two processors, four and up to six cores.

The idea in this case is that the performance gain would be obtained by dual core processor capacity to do more things at the same time, Unlike a single core that only does one thing at a time more quickly.

At the time, analyses carried out by Intel between a top of the line single core chip and a slower dual core, showed that the latter was able to accomplish 30% more tasks consuming 40 % less power. I.e., There were Yes performance gain, but not but was twice. However, energy conservation was quite significant, away definitely the ghost of overheating.

This was a change of paradigm and the fruits of this change are felt to this day with increasingly fast and chips that do not heat up as much as a nuclear power plant or rocket nozzle.

In Ivaiporã-PR, Computer engineer, Workgroup Administrator Tips in General. Passionate about technology and Informatics.

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