In general, I'm really not a big fan of benchmark comparisons until these benchmarks unveil some major differences an average end-user is noticing in some lack of performance. And while both, the HTC One X and the HTC One XL feel snappy, it seems there's a difference, not reflected in benchmark tests. According to the latest comparisons, an interesting one can be found here, the Nvidia Tegra 3-powered quad-core HTC One X is faster than the Qualcomm S4-powered dual-core HTC One XL. Sure, the Tegra 3 is using Nvidia's GeForce GPU while the S4 is using Qualcomm's Adreno 225 GPU; but the difference is so obvious for an end-user, that I wonder if the One X's Nvidia GPU has a performance problem.
The difference appears with the use of Android's "Live Wallpapers" which should bring some motion the the home screen. However, on the One X (above left), the lava is only flowing until a user flicks through the different panels, and continuous to flow after a certain amount of time. On the HTC One XL (above right), the lava is continuously flowing. And it doesn't matter which Live Wallpaper is used, it's the same with every preinstalled Live Wallpaper.
I'm really not sure where the differences come from but I'm quite sure this isn't on purpose, especially because it breaks the otherwise fantastic HTC Sense 4.0 user experience, in which HTC put a lot of efforts.
I've asked HTC for a statement, but this isn't too good since it's easily to discover and lets look the quad-core-powered One X less snappy than the dual-core-powered XL.
UPDATE: According to a first HTC feedback, it's because of the Nvidia's power management and has nothing to do with any performance issues of the Tegra 3 or GeForce. I'll stay in discussion with HTC and let you know further information. In the meantime, it seems we can say it's all-clear, even if I still think the user experience looks somewhat broken.
Cheers ~ Arne