I was searching for this some time now and i coudn't find it again (didn't remember the name :P ), finally found it on my old pc so i share it with you..
Check Windroy an super fast Android emulator for windows
Windroy is Android running with Windows kernel!
It does not run by a simulator (such as VirtualBox), it's on real machine, so it's fast! It keeps full Android capabilities. You can run all Android apps, including 3D games!
you can download it for free from their website
<font size="1">yey! free stuff</font>