The guys over at Tap Tap Tap have just posted a video of an in-house 3D performance test that compares the zippy new iPhone 3G S to the standard 3G. They ran the test one of their own forthcoming apps – the graphically heavy Plasma. In terms of frame-rate, the video shows that the 3G S is four times faster.
Not a definitive test by any means – but it definitely hints at the potential that the new iPhone 3G S has for more 3D-intensive game development.
In addition to the video they also have some Open GL ES speed test results which you can check out here.