Intel® Pentium® 4 Processor 521 supporting HT Technology <br />(1M Cache, 2.80 GHz, 800 MHz FSB)
Intel 521, Intel® Pentium® 4, LGA 775 (Socket T), 90 nm, Intel, 2.8 GHz, 64-bit
Intel 521. Processor family: Intel® Pentium® 4, Processor socket: LGA 775 (Socket T), Processor lithography: 90 nm. Market segment: Desktop, Number of Processing Die Transistors: 125 M, Processing Die size: 112 mm². Package type: Retail box. Processor package size: 37.5 x 37.5 mm. Cache memory: 1 MB