The Snapdsragon 600 processor features a quad-core Krait 300 CPU running up to 1.9GHz, an Adreno 320 GU, LPDDR3 RAM, and around a 40% performance boost over the Snapdragon S4 Pro. The Qualcomm Snapdragon 600 is expected to start appearing in devices around Q2'2013.
The Qualcomm Snapdragon 800 meanwhile is even more beefy with a quad-core Krait CPU running up to 2.3GHz per core, an Adreno 330 GPU, 2x32-bit LPDDR3 RAM at 800MHz, 4G LTE CAT 4, 802.11ac wireless, UltraHD "4K" video output support, HD audio, dual image signal processors, and an overall performance boost. While the Snapdragon 600 is said to be 40% faster than the Snapdragon S4 Pro, the Snapdragon 800 is supposed to be 75% faster. The Snapdragon 800 is expected to start appearing in devices by mid-2013.
The new Adreno 320 and 330 GPUs support OpenGL ES 3.0, OpenCL, and RenderScript Compute. The Adreno 320 is said to be 3x better than the current-generation A225 while the Adreno 330 is said to have 2x better compute performance over the Adreno 320.
More details on the new Snapdragon chips can be found on Qualcomm's web-site.