Parallel Systems
Historically, each processing element in earlier parallel systems—like all CPUs of that time—was a serial computer built out of multiple chips. As transistor counts per chip increases, each processing element could be built out of fewer chips, and then later each multi-core processor chip could contain more processing elements.
Goodyear MPP: (1983?) 8 pixel processors per chip, 3,000 to 8,000 transistors per chip.
Brunel University Scape (single-chip array-processing element): (1983) 256 pixel processors per chip, 120,000 to 140,000 transistors per chip.
Cell Broadband Engine: (2006) 9 cores per chip, 234 million transistors per chip.
Read more about this topic: Transistor Count
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