This is a feedback for Intel x86 Atom System Image for Android 4.0.3 (API 15) package:
There is an UI issue when 'Pointer Location' option is selected and a checkbox is selected or
unselected with mouse - a point is left. Please take a look at:
Settings -> Developer options -> Pointer location
A screenshot is enclosed:
Here is a list:
SDK Manager ( selectAndroid SDK tools & SDK Platform-tools) - Recommended way
Android Platform with system images for ARM or x86 CPUs has to be installed as well
It's not possible to make comparable performance tests on an emulator. There is also only one emulator and nothing device specific. So if you try to find out how a application will perform on a specific device, you need to have access to the real hardware.
The emulator is indeed very handy to look how the application behave at different resolutions or on different Android versions.