North America & Europe
Both Europe and North America (US and Canada) are widely believed to be receiving the GT-i9100 variant (Exynos powered) whereas other markets outside of East-Asia would receive the GT-i9103 variant (Tegra 2 powered). This is all because it has been reported that Samsung may not be able to meet the supply demands of its own Exynos processor SoC, hence Samsung having to outsource an equally powerful dual-core SoC, as Nvidia's, to meet the expected shipment demands.