| Computational method | Potentials (DFT and Other) | Eg (eV) |
| Non local pseudopotential | LDA | 7.0a |
| LMTO-ASA and PAW | LDA | 7.23b |
| Nonlocal, norm-conserving pseudopotential | LDA | 7.36c |
| Plane wave pseudopotential | LDA | 7.36d |
| SIC-pseudopotential | LDA | 7.41e |
| Plane wave pseudopotential | LDA | 7.42f |
| OLCAO | LDA | 7.54g |
| Nonlocal empirical pseudopotential | LDA | 7.63h |
| Ab initio pseudopotential | LDA | 7.8i |
| Plane wave basis method | GGA | 6.99j |
| FP-LAPW + lo | GGA | 7.44k |
| FP-LAPW + lo | GGA | 7.47l |
| Pseudopotential-PAW | GGA | 7.48m |
| Plane wave pseudopotential | GGA | 7.50n |
| Plane wave pseudopotential | GGA | 7.66o |
| Nonlocal empirical pseudopotential | GGA | 7.70h |
| PBE | GGA | 8.4p |
| FP + LAPW + lo | GGA | 8.4q |
| FP-LAPW + lo | EV-GGA | 8.57k |
| LMTO-ASA | GGA | 9.50r |
| B3LYP | GGA | 10.39s |