Done on two pre-production phones, so take this with a grain of salt. The GT-I9505 has the Snapdragon chipset and the GT-I9500 the Exynos.
I9500 - 27,417 (from sammobile.com)
I9505 - 23,607 (from gsmarena.com)
I9500 - 12,726 (from sammobile.com)
I9505 - 12,028 (from gsmarena.com)
Samsung Galaxy S4: User Interface Walkthrough | SamMobile
Samsung Galaxy S4 vs. HTC One: Army of two - GSMArena.com