The most efficient big non-production user on GPGrid who used more than 100,000 hours for successful jobs since April 1, 2017 is Jacob Todd with 98.3% efficiency.
| Rank | Experiment | Name | Wall Hours | Efficiency |
| 1 | minos | Jacob Todd | 1,602,390 | 98.3% |
| 2 | mu2e | Kaitlin Ragosta | 196,620 | 97.3% |
| 3 | minerva | Jeffrey Kleykamp | 184,118 | 96.5% |
| 4 | cdf | Ashutosh Kotwal | 196,491 | 96.3% |
| 5 | minos | Adam Schreckenberger | 282,450 | 96.2% |
| 6 | mu2e | Yaqian Wang | 580,724 | 95.6% |
| 7 | minerva | Manuel Ramirez Delgado | 138,277 | 95.4% |
| 8 | minos | Dung Phan | 636,221 | 92.8% |
| 9 | mars | Vitaly Pronskikh | 371,930 | 92.3% |
— Shreyas Bhat and Tanya Levshina