The Intel Pentium III 1000S was a server/workstation processor with 1 core, launched in June 2001. It is part of the Pentium III lineup, using the Tualatin architecture with Socket 370. To further increase overall system performance, up to two Pentium III 1000S CPUs can link up in a multi-processor (SMP) configuration. Pentium III 1000S has 512 KB of L2 cache and operates at 1000 MHz. Intel is building the Pentium III 1000S on a 130 nm production process using 44 million transistors. The multiplier is locked on Pentium III 1000S, which limits its overclocking capabilities.
With a TDP of 30 W, the Pentium III 1000S consumes only little energy. The highest officially supported memory speed is 133 MT/s, but with overclocking (and the right memory modules) you can go even higher. Actual memory technology support depends on the chosen motherboard, because the memory controller is located on the motherboard (not in the processor). Although neither the processor nor its chipsets support integrated graphics, certain motherboards include dedicated graphics chipset that can provide some basic display output functionality.
Many games will refuse to start on this processor due to the lack of the SSE2/SSE3/SSE4 instruction set.