Intel has a processor Virtualization Technology, that makes the emulator in Android Studio run a lot faster. The performance difference is really significant. Download the installer from Intel Developer Zone:
Android Studio SDK Manager also has a package for this, but the Intel installer is a lot more reliable.
Then you need to see that your VT-X (Virtualization Technology) is enabled in BIOS. It depends on your BIOS version, but it is usually under something similar to: Advanced > Intel Virtualization Technology.
Now create an AVD (Android Virtual Device) that uses a x86 image of Android OS.
When you get it to run correctly, Android Studio console Run tab will show:
HAXM is working and emulator runs in fast virt mode
More detailed instructions: