Table 1: Comparisons between green bus coding and increasing wire spacing.

(4-bit, 𝜆 = 8 ) Area overheadEnergy reductionDelay reductionEDP reduction

Green bus coding19%19.7%49.5%59.3%
Double spacing23%23.2%30.1%46.4%
Quadruple spacing129%37.3%39.2%61.9%