Emulated S3 will feel due to software rendering of ARM instructions (unless using x86 system images).
Genymotion is a fast, commercial Android emulator based on VirtualBox architecture. It is highly favored by QA teams for its speed and fluid frame rates. Install Genymotion and its VirtualBox dependencies. Samsung S3 Emulator
If setting up a proves too difficult, consider these alternatives: Emulated S3 will feel due to software rendering