User:NeoAmsterdam/Overclocking
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Note that this table omits the 216MHz bus setting - please refer to {{Overclocktable}} for those settings.
Overclock Settings
The default setting is highlighted in green.
| 7de009e ### 4c000014 wrmsr | ||||
| CPU | Bus Speed | |||
| 133 | 166 | 200 | 233 | |
| 333 | 3d3 | 4d3 | 5d3 | 6d3 |
| 366 | 3d5 | 4d5 | 5d5 | 6d5 |
| 400 | 3d7 | 4d7 | 5d7 | 6d7 |
| 433 | 3d9 | 4d9 | 5d9 | 6d9 |
| 466 | 3db | 4db | 5db | 6db |
| 500 | 3dd | 4dd | 5dd | 6dd |
| 533 | 3df | 4df | 5df | 6df |
| 566 | 3e1 | 4e1 | 5e1 | 6e1 |
CPU-to-Bus Ratios
The default setting is highlighted in green.
| CPU | Bus Speed | |||
| 133 | 166 | 200 | 233 | |
| 333 | 2.5 | 2 | 1.666666 | 1.428571 |
| 366 | 2.75 | 2.2 | 1.833333 | 1.571428 |
| 400 | 3 | 2.4 | 2 | 1.714285 |
| 433 | 3.25 | 2.6 | 2.166666 | 1.857142 |
| 466 | 3.5 | 2.8 | 2.333333 | 2 |
| 500 | 3.75 | 3 | 2.5 | 2.142857 |
| 533 | 4 | 3.2 | 2.666666 | 2.285714 |
| 566 | 4.25 | 3.4 | 2.833333 | 2.428571 |
Trials
This table shows the approximate time in seconds it takes for the XO to display the "Welcome to OLPC!" message during the boot sequence (or what happened instead of booting up). As with all benchmarks, this table does not necessarily translate into real-world applications and your mileage will vary.
Settings highlighted in red indicate settings that rendered the XO unbootable; orange, bootable but unstable; green, default.
| CPU | Bus Speed | |||
| 133 | 166 | 200 | 233 | |
| 333 | 12.404625 | 12.982728 | 12.156... | Invalid Opcode |
| 366 | 12.088455 | 12.289983 | 12.202338 | Invalid Opcode |
| 400 | 12.185320 | 11.716661 | 12.001534 | Invalid Opcode |
| 433 | 12.021018 | 11.542834 | 11.428083 | Lockup |
| 466 | 11.483150 | 11.728626 | 11.346144 | Lockup |
| 500 | 11.713860 | 11.598526 | 11.138047 | Lockup |
| 533 | 11.595032 | 9.895351 | 10.949749 | Lockup |
| 566 | Restart | Invalid Opcode | Lockup | Lockup |