According to some leaked benchmarks that were spotted by an eagle-eyed reader of Phone Arena, show the GALAXY S III sporting a quad-core Exynos 4412 chip that looks like it smashes all previous Android-based devices, and probably the iPhone 4S, not by a bit, but considerably.
In GLBenchmark 2.1.4 Egypt Offscreen, Samsung's GALAXY S II scores around 30fps, with HTC's One X which sports NVIDIA's quad-core Tegra 3 SoC scoring around 65fps, but the GALAXY S III just looks at those in disgust and spits out 90fps or so. An insane feat for Samsung, if it's true. This would mean that Samsung's GSIII would be nearly three times faster than its predecessor.
Whilst performance and fps is all well and good, battery life is good, too. Apple's iPhone 4S will most likely beat this phone with battery life thanks to Apple's closed-off ecosystem, but Samsung's GALAXY S III should sport the ability the GALAXY S II did, a removable cover. As good as the iPhone is, you can't replace its battery for any reason, without voiding warranty. Where with the GSIII, you could just rip the back off and have a new, fully-charged battery placed, turned back on and back into ICS within 30 seconds or so.
Not long to go until May 3, folks!