Rus Articles Journal

Modern electronics: whether productivity frequency is proportional?

“Quality are more important than quantity“. These words are the motto of troops of a special purpose of Poland, but they are applicable to many spheres of our life. And to electronics also. Recently became the witness of furious dispute at one of forums. The question was a subject of discussion: whether that which clock frequency is lower can be from two different processors more productive?

The impetus to emergence of this discussion was given by the review of rather new dvukhsimochny Highscreen Yommy Duo smartphone. In article it was said that the processor of this phone (MediaTek MTK6573 with a clock frequency of 650 MHz) does not concede Qualcomm MSM7227T with a frequency of 800 MHz. May it be so the truth?

At first we will understand definitions

Sometimes additional confusion brings a carelessness. The person read the paragraph which he - or understood that from it did not understand not so, drew wrong conclusions, and then argues own correctness furiously. Well the person did not understand that the speech in the review goes about productivity !

Clock frequency - one of technical characteristics of the processor. It shows with what frequency the synchronizing impulses on a scheme entrance in one second arrive. Usually the term is used in relation to components of computer systems. In the very first approach clock frequency characterizes subsystem productivity (the processor, memory and so forth) that is the number of the carried-out operations per second .

Frequency of the system tire - the frequency of the system tire, providing connection between the central processor and internal devices.

Quite another matter - productivity . There are several approaches to determination of productivity of the processor. The most widespread and therefore in the standard way is determination of ability of the processor to make calculations with a floating point. This size is measured in FLOPS (Floating Point Operations Per Second).

Certainly, increase of frequency is capable to increase productivity, but for everything there is a limit. Interfere with increase of frequencies of the phenomenon which during the work at high frequencies and at more exact technical process negatively influence work of “stone“. This and increased energy consumption (as a result - about a lshy thermolysis), both the parasitic capacity, and effect of a tunnel in transistors.

So it is necessary to increase productivity by other methods - circuitry and microprogram. The first assume creation of additional computing conveyors, increase in volume and speed of work kesh - memories of data and teams. The second - optimization of a microcode of the processor, realization of support of various sets of instructions and technologies for acceleration of calculations.

Examples from the contemporary history

the First striking example - development of the Hyper Threading technology by Intel corporation which began to be applied in server Xeon processors, and then in the personal computer - shny Pentium 4. It is the technology of multiline processing of teams turning the one-nuclear Intel Pentium 4 processor in pseudo-two-nuclear, allowing to execute some commands in parallel and increasing, thereby, productivity in stand-alone programs. It engineers achieved emulation of two-stream calculations - the operating system sees instead of the processor two.

the Answer from AMD - processors of the Athlon XP series with “the rating frequency“ . For example, Athlon XP 3000+ worked with clock frequency of 2167 MHz, and figure “3000+“ in the name said that on productivity this processor is comparable with Pentium - Amy, with a frequency of 3 GHz.

Then appear first two-nuclear processors, for them processors with four, six and more kernels . And it for desktop personal computers (we do not speak about server systems).

The processor is not able to think, it can only consider. All these tricks are also directed to optimization of calculations.

All receptions applied to computer processors are fully actual also for processors of mobile devices.

Coming back to discussion which it was mentioned in the first paragraphs, I will notice that MTK6573 though “Chinese“, but very “fresh“. And, judging by responses and video reviews of Highscreen Yommy Duo, with all hardware stuffing, and it includes also the big WVGA screen with a capacitor sensor, both GPS, and Wi - Fi and two sim cards, one of which can work in 3G networks, he copes on “five“. And it from 650 MHz - the figure characteristic of smartphones of middle class and not with such rich stuffing. whether

So can be it the truth?

I Admit to

, did not dig out all characteristics of MTK6573 and Qualcomm MSM7227T in the Network, I will not tell precisely at the expense of what MediaTek can win. For certain I know one - at competent approach of developers and due optimization of the main components 650 MHz can be more productive 800. Summing up of

the results

I do not sing laudatory odes to the discussed phone. Let about volume as far as this model is successful, through some time users will tell. Certainly, different processors can show to different results depending on tests or types of work. One manage coding of video, to others better - work with huge data archives or math tests. And the general productivity of system depends on many factors . I considered processors, and the frequency of the system tire and its type, memory work speed, a ratio of these two sizes, the number of devices which interruptions the processor has to process …

the Speech that it is impossible to argue furiously the point of view is very important and to convince others of the correctness, without knowing even elements. And how many such “experts“ who, as ill luck would have it, often become chiefs thanks to other, not professional abilities and spoil to us life?