If someone asks you what processor there is under the hood of the HTC One X regardless of the carrier via which it has been launched, do not hurry to answer there is a Snapdragon S4 CPU clocked at 1.5GHz. The HTC One X launched via AT&T and Rogers or the HTC Evo 4G LTE run on the aforementioned processor unlike the international version of the phone that comes with an NVIDIA Tegra 3 processor because of LTE support but there are many geeks not sitting tight. One of them has posted on XDA Forum about having overclocked his handset up to 1.8GHz, thus 20% more than the original phone can.
On the whole, you should know the instructions will work on any Qualcomm MSM8960-based rooted HTC One X, and if you own such a smartphone, then this method will be perfect for you to browse the net a few seconds faster. Of course, this is a thing you can boast of but do not forget this trick can leave you with a loss of warranty or bricked handset. So think twice before going for it.
Below are the source links from where you can find any info you need, and if you do it and succeed/fail let us know.