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Intel Pentium 4 processor 521 - 2.8GHz (Prescott with Hyper-Threading, 800MHz front side bus, 1MB Level-2 cache, socket LGA775) - Mac Palace
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Amazon.com: Intel Pentium P4 521 SL8HX SL8PP SL9CG Desktop CPU Processor 1M 2.8 GHz 800MHz LGA 775 : Electronics
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