CPU Lock Free

4/5 - (13 votes)
4/5 - (13 votes)

CPU Lock Free

Option name:

CPU Lock Free

Possible values of an option:

[Auto], [Enabled], [Disabled]

The option description:

Value setting [Enabled] for the given option orders to use for high models Pentium 4 additional factor 14x instead of regular (the given possibility appeared for the first time in Pentium 4 550), [Disabled] disconnects the given possibility. The variant [Auto] allows to select automatically an optimal variant depending on an acceleration level. If you are not going to be engaged in acceleration, is mandatory install for this option value [Disabled], otherwise, under condition of support by your processor of the multiplier 14x, the processor will function on frequency of all in 2.8 GHz.

The factor is a relation of working frequency of the processor to physical frequency of the front-side bus.

High models of processors of family Pentium 4 on kernel Prescott differ rather high power consumption. Since model Pentium 4 550 (working frequency of 3.4 GHz) the thermal packet (TDP — Thermal Design Power), characterizing the maximum thermal emission, increased more than on third — with 84 to 115 W. Besides more rigid requirements to system of cooling it caused of processing of power supply circuits of the processor. To provide functioning of the new processor in old motherboards, not compatible to a new thermal packet, in Pentium 4 550 (and in all subsequent models of this family — Pentium 4 560 and all 600th series) the additional factor 14x has been added. It was used instead of regular (for example, 17x for Pentium 4 550) if the motherboard did not meet the requirements of a new thermal packet. Certainly, working frequency thus was automatically reduced to 2.8 GHz, but it explicitly is better than full inoperability the given combination.

However multiplier appearance 14x allowed to raise essentially accelerating potential of systems with new processors. Considering that in Pentium 4 (however, as well as in the majority of other models of processors) a factor is blocked, acceleration should be carried out magnification of frequency of the front-side bus. Alas, accelerating the potential is thus insignificant — "ceiling" Pentium of 4 normally less than 4 GHz: it is not enough, if for a basis to take working frequency in 3.4 or 3.6 GHz. The insignificant magnification of frequency of the front-side bus does not allow to reach high frequencies of the memory bus connected to it, essentially restricting the general scoring in high-speed performance.

Another matter if instead of regular to use a factor 14x. Now, before processor "ceiling" will be reached, frequency of the front-side bus, and together with it and memory buses, it will be essential above nominal. Result — much higher high-speed performance of the dispersed system.

Other options identical to destination:

C.A.M

Ratio Free

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