[Oh, gee - let's see how they did it! Uh-oh, that's not going to fly - Nvidia cooked the books. "The results were no longer in favor of NVIDIA, as the Core 2 chip scored about 15,200 points, compared to the Tegra's 11,352."]
"During Mobile World Congress 2011 held in Barcelona, NVIDIA announced the Tegra 3 SoC (System-on-a-Chip), codenamed Kal-El. The company also disclosed a roadmap that boldly promises to deliver 100x the performance of a current Tegra 2 chip by 2014. Bear in mind that NVIDIA factors in both CPU and GPU performance in this number, so it's not that easy to compare it to other chips. However, they also provided a performance comparison with a Core 2 Duo CPU using CoreMark and it was exactly those benchmark results that stirred quite a controversy.
It didn't took long until someone found out about a nasty little detail about the performance numbers; when looking at the compiler versions and settings used to compile the CoreMark benchmark, the Core 2 Duo numbers were produced via GCC 3.4 and only the standard set of optimizations (-O2), while the Tegra 3 numbers were run on a more recent GCC 4.4 with aggressive optimizations (-O3). Il Sistemista website took a Core 2 Duo T7200 and re-ran the benchmark compiled with GCC 4.4 and the same optimization settings. The results were no longer in favor of NVIDIA, as the Core 2 chip scored about 15,200 points, compared to the Tegra's 11,352."