In order to get a not-that-power-hungry LTE enabled flagship phone, Samsung decided to combine LTE with a dual-core CPU instead of the quad-core CPU that the international version without LTE got. The amount of RAM is another that varies between the different versions, with models having either 1GB or 2GB of RAM.
PocketNow has published the video above to show you the difference between the international Galaxy S III and Sprint’s (US) Galaxy S III variant. The Sprint variant packs a dual-core Snapdragon S4 with 2GB of RAM and LTE support. The international has the usual quad-core Exynos with 1GB of RAM.