Intel® Pentium® 4 Processor 520/521 supporting HT Technology (1M Cache, 2.80 GHz, 800 MHz FSB)
Intel Pentium 511, Intel® Pentium® 4, Socket 478, 90 nm, Intel, 2.8 GHz, 32-bit
Intel Pentium 511. Processor family: Intel® Pentium® 4, Processor socket: Socket 478, Processor lithography: 90 nm. Market segment: Desktop, Number of Processing Die Transistors: 125 M, Processing Die size: 112 mm². Package type: Retail box