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Sempron is AMD's newest low-end CPU. It is replacing the Duron processor, and will compete against Intel's Celeron D processor.
Initial variants will be based on the Athlon XP's Thorton Core, with a 256KiB L2 cache and a 333MHz-effective bus. Recently introduced Sempron 3000+ is based on Barton core and has 512KiB of L2 cache. Later versions will use a version of the Athlon 64 called Paris, which will not support AMD64 instructions and will also only have 128 or 256 kilobytes of L2 cache. One model that already uses the "Paris" core is the AMD Sempron 3100+. The Sempron shares a few of the common features in the Athlon 64, including the integrated on-die memory controller as well as support for the Socket 754 infrastructure. It does not, however, include 64-bit support.
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