gpu_mem_1024=256  
disable_overscan=1
start_x=1  
disable_splash=1
gpu_mem_256=64  
gpu_mem_512=64  
arm_freq=1000  
core_freq=500  
over_voltage=2  
sdram_freq=500  
sdtv_aspect=1  
config_hdmi_boost=5  
dtparam=spi=on