The AMD Athlon XP 1800+ was a desktop processor with 1 core, launched in October 2001, at an MSRP of $252. It is part of the Athlon XP lineup, using the Palomino architecture with Socket A. Athlon XP 1800+ has 256 KB of L2 cache and operates at 1533 MHz. AMD is making the Athlon XP 1800+ on a 180 nm production node using 38 million transistors. The multiplier is locked on Athlon XP 1800+, which limits its overclocking potential.
With a TDP of 66 W, the Athlon XP 1800+ consumes typical power levels for a modern PC. AMD's processor supports DDR1 memory. The highest officially supported memory speed is 266 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. Inside the box you will not only find the processor, but also a Yes cooler.
Many games will refuse to start on this processor due to the lack of the SSE2/SSE3/SSE4 instruction set.