Galaxy Note 3, much like Galaxy S4, is based on two distinct SoCs, depending on the markets it's being sold in. In markets with established LTE networks, the GT-N9005 is being sold, which runs Qualcomm's Snapdragon 800 SoC, while in markets without LTE networks, the GT-N9000, which runs Samsung's homebrew Exynos Octa 5420 SoC, is being sold. GadgetsPortal got a hold of both variants, and pitted them against each other.
The Exynos Octa 5420 combines four Cortex-A15 and four Cortex-A7 cores in a big.LITTLE configuration, with the Cortex-A15 cores clocked at 1.90 GHz, which realistically are what are driving benchmarks here, since the Galaxy Note 3 doesn't come with the heterogeneous multi-processor (HMP) software update, which lets the chip fire up both sets of CPU cores. The Snapdragon 800, on the other hand, packs four Krait 400 cores clocked at 2.30 GHz. Cortex-A15 is said to offer higher performance per clock than Krait 400, which makes the contest evenly matched, or does it? The two were put through AnTuTu.
The Snapdragon-based GT-N9005 (the white one in the picture above) is marginally faster than the Exynos-based GT-N9000, although the results should translate into zilch noticeable performance difference between the two. It hence baffles us why Samsung decided to deprive the GT-N9000 of the ability to record Ultra-HD (3840 x 2160 pixels) video. It's not like the hardware can't handle it.
The reviewer also noted that for some strange reason, the Exynos-based variant has higher idle memory usage at 1.3-1.4 GB, compared to the Snapdragon-based one's 1.0-1.1 GB. There's plenty of memory to go around for both, at 3 GB. Find the quick run-down in the video below.