Dolphin, the GameCube and Wii emulator - Forums

PC: Dell Inspiron 15r i5 Windows 8
Processer: Intel® Core™ i5-4200U CPU@ 1.60GHz 2.30GHz
Installed memory(RAM):6.00 GB (5.72 GB useable)
system type:64 bit operating system,x64-based processer
Please Answer And Also Explain To Me What Turbo Boost Is And Where To Download It. IF YOU KNOW ABOUT IT

You can´t download a CPU feature.

Intel TB allows you to overclock your processor a bit for faster computing experience.

Your CPU is too weak for latest versions of Dolphin.
You might be more lucky with older versions of the emulator.
However older versions = better speed but worse performance/reliability. And no support (or so little ) on the forum

It'll be a hit or miss for you, depending on the game. Put your computer into high performance mode and make sure it's plugged into a power source for the best experience. That way you can make the most of TB (it's a feature of the CPU, no downloading required)