| The fixed point method | No. of iterations |
Gamma = 0 | Jacobi | 2246 |
| Gauss-Seidel | 1124 |
| SOR | 370 |
| Backward Gauss-Seidel | 1124 |
| Backward SOR | 370 |
| SSOR | 370 |
Gamma = 16 | Jacobi | 459 |
| Gauss-Seidel | 231 |
| SOR | 68 |
| Backward Gauss-Seidel | 231 |
| Backward SOR | 68 |
| SSOR | 42 |
Gamma = 64 | Jacobi | 191 |
| Gauss-Seidel | 97 |
| SOR | 54 |
| Backward Gauss-Seidel | 97 |
| Backward SOR | 54 |
| SSOR | 20 |