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Fast and Furious: Overclocking chips for fun and profit

  1. 1. Fast and Furious: Overclocking chips for fun and profit @OmerK | OSHUG #30 | 28/11/2013
  2. 2. Agenda • Comp Arch/Digital Electronics 101 • Silicon devices and overclocking • Concept and Challenges • Profit?! • vftweak • Q & A
  3. 3. “ The oscillators are fixed on the hashing board (one 12MHz, one 14.318MHz). Low switches to the 12MHz one while High switches to the 14.318MHz one. If you need more speed you will need to buy a 3.3V 5mmx7mm oscillator that is higher than 14.318, unsolder the current one, and solder the new onto the board. We tried 14.7xx and 15 before. On 1.25- 1.26V they begin to work, but producing a lot of heat.
  4. 4. vftweak • DS1077L Programmable Oscillator – 4.87kHz to 66.666MHz • MCP4661 Digital Pot • MCP3221 ADC • TC74 Temperature Sensor Untested design files at http://solderpad.com/omerk/vftweak (I have some spare PCBs for the brave hackers amongst you!)
  5. 5. Thank you Any questions?

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