All other models were rated at 130 watt.Īll Smithfield processors were made of two 90 nm Prescott cores, next to each other on a single die with 1 MB of Level 2 (L2) cache per core. The 805 and 820 models had a 95 watt TDP. Running it at over 4 GHz was possible with water cooling, and at this speed the 805 outperformed the top-of-the-line processors (May 2006) from both major CPU manufacturers (the AMD Athlon 64 FX-60 and Intel Pentium Extreme Edition 965) in many benchmarks including power consumption. The relatively cheap 805 was found to be highly overclockable 3.5 GHz was often possible with good air cooling. In March 2006, Intel launched the last Smithfield processor, the entry-level Pentium D 805, clocked at 2.66 GHz with a 533 MT/s bus. On May 26, 2005, Intel launched the mainstream Pentium D branded processor lineup with initial clock speeds of 2.8, 3.0, and 3.2 GHz with model numbers of 820, 830, and 840 respectively. Intel first launched Smithfield on Apin the form of the 3.2 GHz Hyper-threading enabled Pentium Extreme Edition 840. As a response, Intel developed Smithfield, the first x86 dual-core microprocessor intended for desktop computers, beating AMD's Athlon 64 X2 by a few weeks. In April 2005, Intel's biggest rival, AMD, had x86 dual-core microprocessors intended for workstations and servers on the market, and was poised to launch a comparable product intended for desktop computers. However, in multitasking environments such as BSD, Linux, Microsoft Windows operating systems, other processes are often running at the same time if they require significant CPU time, each core of the Pentium D branded processor can handle different programs, improving overall processing speed over its single-core Pentium 4 counterpart. They ran at similar speed when not multitasking on the Pentium D or older Pentium 4 branded CPUs at the same clock speed. In 2008, many business applications were not optimized for multiple cores. Furthermore, multi-threaded games benefit from dual-core CPUs. Nevertheless, the dual-core CPU is useful to run both the client and server processes of a game without noticeable lag in either thread, as each instance could be running on a different core. Single-threaded applications, including most older games, do not benefit much from a second core compared to an equally clocked single-core CPU. The dual-core CPU is capable of running multi- threaded applications typical in transcoding of audio and video, compressing, photo and video editing and rendering, and ray-tracing. Pentium D 930 3.00GHz (Presler) with Intel i945GC Chipset The final shipment date of the dual die Presler chips was August 8, 2008, which marked the end of the Pentium D brand and also the NetBurst microarchitecture. The future belonged to more energy efficient and slower clocked dual-core CPUs on a single die instead of two. By 2004, the NetBurst processors reached a clock speed barrier at 3.8 GHz due to a thermal (and power) limit exemplified by the Presler's 130 watt thermal design power (a higher TDP requires additional cooling that can be prohibitively noisy or expensive). Nine months later, Intel introduced its successor, codenamed Presler, but without offering significant upgrades in design, still resulting in relatively high power consumption. The brand's first processor, codenamed Smithfield, was released by Intel on May 25, 2005. Each CPU comprised two dies, each containing a single core, residing next to each other on a multi-chip module package. The Pentium D brand refers to two series of desktop dual-core 64-bit x86-64 microprocessors with the NetBurst microarchitecture, which is the dual-core variant of Pentium 4 "Prescott" manufactured by Intel.
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