AMD has begun to phase out its single-core Athlon processor lineup and will launch five new 45W Sempron processors in September to cover the entry-level single-core processor market, according to sources at motherboard makers. AMD has already stopped taking orders for its 65nm Athlon 64 processors including 3500+, 3800+ and 4000+, while 90nm Athlon 64 processors are still going, but in very low volumes, according to the sources.

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