Taken from this review and this is the slower clocked exynos version not the full 1.8 clocked she version
Real-life usage seemed to reflect the benchmarks in this sense, as well, although we felt that the Exynos version held a slight advantage over the Snapdragon. If you recall, we noted in our GS4 review that the T-Mobile unit we used suffered from some visible lagging and stuttering when Samsung's smart features and motion gestures were activated, although it was smooth sailing as soon as we turned them off. Fortunately, we couldn't replicate the same problems on the I9500
.......Aside from this, however, the two devices fared almost identically when put side by side in various scenarios ranging from light everyday tasks up to graphic-intensive games.