We had heard long back that the very few Orion code named processor which now known as Exynos have been manufactured and hence will not be used in the Samsung Galaxy S II but Samsung surprised us by showcasing the Samsung Galaxy S II running on the Exynos processor and now an Engadget source has confirmed that Second Wave of the Galaxy S II will be sporting the Tegra-2 processor.
Both these chips are Dual Core and 1 GHz and their performance should be similar but the the Galaxy S II on Exynos is not out yet so nothing can be said right now, as this can also be a rumor as Samsung has not announced it officially, also which regions will be getting the first shipment of the Galaxy S II is also not finalized so all we can do is wait and watch as to what Samsung does to make it right.
Source: Engadget