all latest gen sandy bridge integrated gpus have turbo, even pentium.
look for a turbo boost setting in processor graphics/ integrated graphics/graphics setting in your motherboard's bios/uefi. set it to disabled/off.
i don't know why you need to turn of igp turbo boost off, it's not bad for the system. if you have a discreet gfx card or p67 motherboard, the igp is turned off. if you're using igp, turbo boost can actually enhance performance when there is a need.