In order to make the Android emulator run faster and be more responsive, you can configure it to take advantage of hardware acceleration, using a combination of configuration options, specific Android system images and hardware drivers…

My AVD API 18 config have intel processor, 768 RAM + 128MB VM Heap + Host GPU + Intel HAXM
My AVD API 10 config have intel processor, 768 RAM + 128MB VM Heap + Intel HAXM