1,000 GHz processors that run on virtually no energy

[peppy197 165]

graphene its being ironed out (sic) maybe 5 years away if it ever gets developed. in this link somewhere: www.physorg.com/newstitle:

[Guest jahman]

1,000 GHz is called 1 THz (Tera Hertz). Thing is at 1 GHz light travels only 30 cm between cycles, so at 1 THz light only travels 0.3 mm or 300 microns, and that's in a vacuum. Electricity in a semiconductor is slower and thus travels even less. Compare this with a 5 GHz clock wavelength of 6 cm. What this all means is that at 1 THz it will be impossible to keep the CPU synchronized to the clock because even if you inject the clock at the center of the chip, the nearest edges are tens of wavelengths away. So forget a 1 THz clock. Cheers, - jahman.

[MarkW 1,491]

Damn you Physics !!!

[peppy197 165]

1,000 GHz is called 1 THz (Tera Hertz). Thing is at 1 GHz light travels only 30 cm between cycles, so at 1 THz light only travels 0.3 mm or 300 microns, and that's in a vacuum. Electricity in a semiconductor is slower and thus travels even less. Compare this with a 5 GHz clock wavelength of 6 cm. What this all means is that at 1 THz it will be impossible to keep the CPU synchronized to the clock because even if you inject the clock at the center of the chip, the nearest edges are tens of wavelengths away. So forget a 1 THz clock. Cheers, - jahman.

Graphene being a one molecule thick sheet would those restrictions still apply?Regardless I agree that 1000GHz is a bit too much and was prob stated for headlines sake in the article I read.

[Guest jahman]

Graphene being a one molecule thick sheet would those restrictions still apply?...

Yes. Cheers, - jahman.