DEC made a one-off ECL CPU in 1993: 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.
The VAX 9000 was also an ECL implementation.
https://en.m.wikipedia.org/wiki/VAX_9000
It was an enormously expensive failure.
The VAX 9000 was also an ECL implementation.
https://en.m.wikipedia.org/wiki/VAX_9000
It was an enormously expensive failure.