The tilted-charge light-emitting diode achieved a record-breaking modulation speed of 7 gigahertz
, corresponding to a recombination lifetime of 23 picoseconds.
Intel Corporation recently crossed the 2 gigahertz
barrier with its Pentium chip, but clock speed is just one component of performance, a subject chip makers are notorious for squabbling over.
While AMD's fastest chip falls short of two gigahertz
- or two billion cycles per second - the company claims its chips are more efficient than Intel's and can be faster even at lower clock speeds.
The world's largest maker of chips used to power computers said that based on robust yields -- or the success it was having in manufacturing new chips with few defects - the company plans to accelerate the timing of the release of its 2 gigahertz
chip to sometime during the current third quarter.
speed (a billion cycles a second) will make possible applications not feasible with any of today's existing chips.
As the skies get more crowded with electromagnetic signals of the kilo- and megahertz frequencies, satellite communications researchers want to ease the crunch by building circuitry that operates at much faster, gigahertz
frequencies -- billions of cycles per second.
This particular gallium arsenide chip operates at 18 gigahertz
Electronics today, like electronics 35 years ago, is limited to a signal bandwidth of 1 gigahertz
, Chang says; that seems to be a "stone wall" limitation.