Thanks to a leaked slide obtained by Semi-Accurate, the GPU is confirmed as being the Mali T-604 as we figured out back in January. The latter's 2.1 gigapixels per second rendering and a wide 12.8GBps memory bandwidth offers about four times the performance and better 3D graphics than that of the Mali 400, which was part of the Exynos 4210 used on some models of the Samsung Galaxy S II.
The slide also displays the 32nm manufacturing process of the 5250 and shows off the chip as part of a larger Exynos 5 dual line which could hint at faster clock speeds or single or quad-core variants of the chip. Back in January, Samsung said that the 5250 would first be used in tablets before being used in smartphones.
source: SemiAccurate via Electronista