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Since the launch of the Raspberry Pi it has been possible to overclock your a Raspberry Pi doing so would void your warranty but now there is an official supported way of doing it without affecting your warranty. You can now pick from an overclock presets overclocking the Pi from the standard 700mhz up to 1ghz which the Raspberry Pi foundation say is over 50% faster in the bench marks.

This will help with processor intensive tasks and may help to make media playback smoother. Some experimented will be needed to find what your Pi and power supply will handle.

Read the post for the bench mark details and instruction on how to enable overclocking. The option will only be in the latest version of the build of the software which you can get by updating the install

sudo apt-get update

sudo apt-get upgrade

and to edit the overclock setting:

sudo raspi-config

Then select the update option, this should install the new firmware. After a reboot you should see the overclocking option.

It’s great to see the continuing development of the Raspberry Pi, it just seems to get better and better.

 

We’ve been doing a lot of work to understand the impact of voltage and temperature on lifetime, and are now able to offer a “turbo mode”, which dynamically enables overclock and overvolt under the control of a cpufreq driver, without affecting your warranty. We are happy that the combination of only applying turbo when busy, and limiting turbo when the BCM2835′s internal temperature reaches 85°C, means there will be no measurable reduction in the lifetime of your Raspberry Pi.

You can now choose from one of five overclock presets in raspi-config, the highest of which runs the ARM at 1GHz. The level of stable overclock you can achieve will depend on your specific Pi and on the quality of your power supply; we suggest that Quake 3 is a good stress test for checking if a particular level is completely stable. If you choose too high an overclock, your Pi may fail to boot, in which case holding down the shift key during boot up will disable the overclock for that boot, allowing you to select a lower level.

What does this mean? Comparing the new image with 1GHz turbo enabled, against the previous image at 700MHz, nbench reports 52% faster on integer, 64% faster on floating point and 55% faster on memory

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