The AMD Athlon 64 4000+ was a desktop processor with 1 core, launched in October 2004, at an MSRP of $729. It is part of the Athlon 64 lineup, using the ClawHammer architecture with Socket 939. Athlon 64 4000+ has 1 MB of L2 cache and operates at 2.4 GHz. AMD is building the Athlon 64 4000+ on a 130 nm production process using 106 million transistors. The multiplier is locked on Athlon 64 4000+, which limits its overclocking capabilities.
With a TDP of 89 W, the Athlon 64 4000+ consumes a good deal of power, so decent cooling is needed. AMD's processor supports DDR1 memory with a dual-channel interface. The highest officially supported memory speed is 400 MT/s, but with overclocking (and the right memory modules) you can go even higher. Although the processor doesn't come with integrated graphics, certain motherboards with compatible chipsets can provide this capability.
Neither SSE3 nor SSE4 instruction sets are supported, which will lead to problems with games not starting.