3 ms·

I remember the Exponential Technologies bipolar PowerPC chip running at 533 MHz back in 1997... so sad Apple killed it https://web.archive.org/web/199707120654

• kens 2y ago
  That's an interesting chip. You don't see many bipolar processors. (The Pentium has a few bipolar transistors sprinkled around, but it's mostly CMOS.)
  • formerly_proven 2y ago
    DEC made a one-off ECL CPU in 1993: https://bitsavers.org/pdf/dec/tech_reports/WRL-93-8.pdf https://bitsavers.org/pdf/dec/tech_reports/WRL-93-8.pdf 300 MHz / 115 W. Ten years later, you'd have Pentium 4 at 3000 MHz and 115 W.
    • chasil 2y ago
      The VAX 9000 was also an ECL implementation. https://en.m.wikipedia.org/wiki/VAX_9000 https://en.m.wikipedia.org/wiki/VAX_9000 It was an enormously expensive failure.
      • deleted 2y ago
        [deleted]