[Alex Rissato] proudly reports that he now holds the record for greatest benchmark score on HWBOT (machine translation); something he sees not only as a personal accomplishment however admirably, of national pride. Overclocking a Raspberry Pi is not as simple as achieving the greatest operational clock rate. A record constitutes just the right combination of CPU clock, memory clock, GPU clock as well as lastly the CPU core voltage. If you’ve handled to create that special sauce, the combination must be satisfactorily cooled as well as most significantly be steady sufficient to pass an actual performance benchmark.
More POWAAA to the CPU!
[Alex] realized that the primary hurdle to achieving the preferred CPU clock was the internally produced as well as hence restricted, CPU core voltage; This is externally LC filtered as well as directed back to the CPU on a stock Pi. [Alex] de-soldered the filter on the PCB as well as provided the CPU with an externally produced core voltage.
Next, the cooling had to be tended to. Air cooling just wouldn’t cut it, so a Peltier based heatsink interface had to be devised with the hot side immersed in a container of salt water. all of this equated to a comfy 16C at a clock speed of 1600 MHz.
Was all the effort justified? We definitely believe it was! Despite falling short of the Pi zero CPU clock rate record, currently set at 1620MHz, [Alex] earned the top area in the HWBOT Prime overclocking benchmark. Brazil can now definitely add this to its trophy cabinet, probably overshadowing the 129 Olympic medals.