¿Qué ocurre cuando se le hace overclocking a la Raspberry Pi a 1.5GHz?
For some time, the Raspberry Pi It has been a topic of interest in the portal dedicated to overclocking Hwbot.org and they were curious to see what this small computer, super cheap was able to do when he combined both with extreme cooling as a voltage increase on the Broadcom chip.
Joost connected the Raspberry Pi to an EVGA EPower module, very commonly used by overclockers to supply additional current to a graphics card. The curious was that the EPower is approximately three times larger than the Raspberry Pi and it costs about three times more, also.
Thanks to the EPower were able to increase the voltage from the Broadcom chip of the Raspberry Pi significantly. By default it can raise the voltage of the Raspberry Pi a 1.4 voltios (el voltaje estándar es de 1.25), but the EPower we are allowed to go above and beyond. In order to achieve the maximum possible overclock, they used approximately 1,8 volt.
further, Joost used a cooler to lower the temperature of the Raspberry Pi about one 25 degrees Celsius less. In order to do this, the Raspberry Pi was isolated using a spray of plastic and is equipped with a custom heatsink.
For now, It seems that overclocking is limited by the software or firmware of the Raspberry Pi: tan pronto se plantearon subir la frecuencia de reloj a más de 1,5 GHz, the operating system stopped booting. It is still a fairly extreme overclock, Bearing in mind that the default rate of the Raspberry Pi It is 700 MHz.
To measure the performance increase, is used as a first point of reference HWBOT. HWBOT is an application based on Java that after calculations ended with a score of 795,18 percentage points, a record since curiously this performance approaching the of Atom processors from Intel slower.
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Autor: Koen Crijnsraspbe
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