Intel will extend the pipeline at Prescott

Hello, All! Yeah, damn it. No, the stumps will lose... I still remember how Winrar worked on the 4th the stump is slower than on the 2nd. Intel will extend the pipeline at Prescott Kai Schmerer, Michael Kanellos ZDNet.ru Intel has redesigned a key element of the design of the future version of the processor Pentium 4 so that the chip can operate at higher speeds, but analysts say the change is unlikely to significantly improve it at first productivity. The new Intel Pentium 4 Prescott processor, which will be equipped with a pipeline, significantly longer than the 20-stage pipeline of modern Pentium 4, due out early February. Some sources claim that it will contain about 30 steps. It is likely that such an extension of the pipeline will help Intel achieve its goal of releasing desktop chips clocked in 2004 4 GHz. (According to the same sources, Prescott will debut with a clock speed approximately 3.4 GHz.) An Intel representative would not confirm Prescott's pipeline length, but said that it will indeed be longer than that of the Pentium 4: . However, this change is likely to cause controversy: critics will say that Intel is increasing the speed of its chips for show. When choosing a PC, consumers andmany enterprises usually pay attention to the speed of the processor, measured in gigahertz. Typically, the higher it is, the higher the price. In 2000, Intel, when moving from Pentium III to Pentium 4, increased the length conveyor from 10 stages to 20. Despite the fact that the extended conveyor allows increase performance, at first this additional speed, if anything, gives the gain is minimal. Pentium 4 1.4 GHz, which came out at that time, in many applications performed no better than the Pentium III 1 GHz, and was often inferior to the then AMD's flagship - Athlon 1.2 GHz, which had a 15-stage pipeline. “Everyone who complained about the 20-stage conveyor will complain again,” says Microprocessor Report editor-in-chief Peter Glazkowski. - It looks like Intel liked to increase the clock speed with deeper conveyors". Glazkowski believes, however, that such a conveyor could provide other benefits. According to him, outside of Intel, the Prescott architecture It’s not entirely clear yet. On the conveyor The conveyor is one of the important elements of the microprocessor design. Chips with with a short conveyor they can simultaneously solve more problems, but they work slower, completing fewer cycles per second. Conveyor extension allows the processor breaks tasks into smaller ones, but since individual tasks becomes larger, it is not at all necessary that all the work is done faster.Additionally, a longer pipeline may increase delays caused by mistakes. If the operation fails at stage 18, the processor must restore previous steps to perform calculations with correct data. With a short conveyor, fewer steps often need to be repeated. Difference clearly visible when comparing the AMD Athlon 64 3200 and Intel Pentium 4 3.2 GHz. Both processors provide approximately the same performance, but Athlon 64 with The 12-stage pipeline operates at a clock frequency of 2 GHz. In 2003, Intel somewhat relaxed its emphasis on performance. Clock frequency the Pentium 4 family was increased only twice. When marketing mobile Pentium M processors also placed more emphasis on overall performance than at speed measured in megahertz. And yet this subtle shift was caused more by practical considerations than by conflicts of philosophy. Pentium The M is much slower than the Pentium 4 (and has a shorter conveyor) in order to save energy.