From the press release: "The Galaxy S III includes Android™ 4.0 (Ice Cream Sandwich) with TouchWiz enhancements, a Qualcomm Snapdragon S4 1.5 GHz dual core CPU

From the press release: "The Galaxy S III includes Android™ 4.0 (Ice Cream Sandwich) with TouchWiz enhancements, a Qualcomm Snapdragon S4 1.5 GHz dual core CPU and 2GB of internal RAM to provide high-speed performance enabling efficient and seamless multi-tasking. The dual-core processor offers competitive speeds and performance as leading quad-core processors without sacrificing valuable battery life. The brilliant 4.8-inch HD Super AMOLED™ touchscreen display brings content to life, without compromising the device’s true pocketability. The expansive display is protected by Gorilla Glass 2.0 to guard against cracks and scratches and provide enhanced touchscreen responsiveness." Note the substitution of the dual-core CPU - and 2 GB RAM!