The Intel Celeron 900A was a desktop processor with 1 core, launched in January 2002. It is part of the Celeron lineup, using the Tualatin architecture with Socket 370. Celeron 900A has 256 KB of L2 cache and operates at 900 MHz. Intel is making the Celeron 900A on a 130 nm production node using 44 million transistors. The multiplier is locked on Celeron 900A, which limits its overclocking potential.
With a TDP of 27 W, the Celeron 900A 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 the processor doesn't come with integrated graphics, certain motherboards with compatible chipsets can provide this capability.
Many games will refuse to start on this processor due to the lack of the SSE2/SSE3/SSE4 instruction set.