Pentium M

Left in March 2003, the Microprocessor Pentium M , for Mobile Pentium, is a Microprocesseur 32 Bit S of the family X86 manufactured by Intel. Its architecture is derived from that of the Pentium III. It takes again Pentium 4 its bus quad pumped , its predictor of connection (improved for the occasion) as well as the Instruction set SSE2. This processor was designed to replace the mobile Pentium 4, whose excessive consumption quickly became a handicap.

Pentium M is at the origin of the label Centrino , mark of Intel to characterize the laptops having, in addition to Pentium M, a chart network Wi-Fi approved by Intel, and a Chipset Intel. A laptop with Pentium M thus does not have forcing Centrino name

the Pentium M Banias : first Pentium Mr. Cadencé of 900 MHz with 1,7 GHz with a FSB with 400 MHz and 1 Me of mask of level 2.

the Pentium M Dothan : left in May 2004, it is appreciated the most by the experts for his low electricity consumption. It was conceived from the beginning for the portables and, even at lower frequencies, it can be more powerful than other processors at higher frequencies.

With the introduction of the platform Centrino Sonoma, Intel launches its new Dothan . These new Dothan uses a FSB of 533 MT/s to the places of 400 MT/s. That has as a consequence direct for the same frequency to increase consumption slightly and thus a reduction in the transportable autonomy of the computers. One finds in option the function of bit of locking ( Execute Sayable Bit ) which prevents the execution of some virus.
the introduction of Centrino Sonoma has permi also at Intel to launch its Pentium Mr. LV for " Low Voltage" and ULV for " Ultra Low Voltage". These processors are selected as of the their exit of factory since what characterizes them is a weak tension of operation. However only the best of them its able to hold a suitable frequency with a so weak tension.

All Pentium M have technology EIST or Enhanced Intel Speedstep Technology . That enables them to decrease the frequency of the processors dynamically. When the EIST is activated the tension is decreased, the coefficient passes from its value initial to 6, FSB remains identical. The fall of tension makes it possible to decrease the consumption of the processors when this one is not requested and thus makes it possible to increase the autonomy of the laptop.

Pentium M

Banias

Pentium M Banias are the first has to be born. It are engraved with a smoothness of 130nm. All the processors according to support technologies MX, SSE, SSE2 and EIST.

Dothan

Pentium M Dothan are Die Shrink of Banias in 90nm. It supports technologies MX, SSE, SSE2, EIST and XD Bit except for models 710,738,733 and 723.

The Die of Dothan measures 83.6 mm ².

After Pentium M

The evolution of Pentium M corresponds to a new architecture: the Intel Mobile Structures, used by the processors Intel Core, not to confuse with Core 2 which are a variation general public of the Intel Core Architecture. The Intel Mobile Structures is not an architecture in it even since it depends on the architecture P6 of which it takes again the base.

The line entry Pentium M

Pentium M was also declined in a model of line entry, the Celeron M launched in January 2005. This last has a mask L2 amputee of half is 1 Me instead of 2 Me on the Dothan processors.

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