Raspberry pi2比它的前代产品快得多，但是您可能仍然希望超频它以获得最佳性能。博客作者海登•詹姆斯（haydenjames）分析了每个超频设置的作用，并分享了一些配置，以获得更好的性能。

在/boot/config.txt中，您可以找到各种超频选项，以及自定义GPU内存分配的方法（如果您运行的是Kodi或RetroPie，这会很有帮助）。下面是每个超频选项的细分：

• arm_freq- Frequency of ARM in MHz.
• core_freq -Frequency of GPU processor core in MHz. It has an impact on ARM performance since it drives L2 cache.sdram_freq -Frequency of SDRAM in MHz.
• over_voltage – ARM/GPU core voltage adjust. Values above 6 are only allowed when force_turbo or current_limit_override are specified (which set the warranty bit).
• force_turbo – Disables dynamic cpufreq driver and minimum settings below. Voids Warranty.
• initial_turbo -Enables turbo mode from boot for the given value in seconds (up to 60) or until cpufreq sets a frequency. Default 0
• arm_freq_min – Minimum value of arm_freq used for dynamic clocking.
• core_freq_min – Minimum value of core_freq used for dynamic clocking.
• sdram_freq_min – Minimum value of sdram_freq used for dynamic clocking.
• temp_limit – Overheat protection. Sets clocks and voltages to default when the SoC reaches this Celsius value. Setting this higher than default voids warranty. Default 85
• disable_splash – If set to 1, avoids the rainbow splash screen on boot.
• boot_delay - Wait for x number of seconds in start.elf before loading kernel. Default 1
• gpu_mem - GPU memory in megabyte. Sets the memory split between the ARM and GPU. ARM gets the remaining memory.

你改变什么取决于你用树莓皮做什么。例如，如果您运行的是Kodi或RetroPie，您应该将gpu\u mem设置为320以提供更好的性能。同样，如果你超频，你可能会想提高电压，以帮助稳定。詹姆斯在他的博客上对不同的场景进行了分类并提出了建议。

覆盆子皮2超频|海登詹姆斯