When it comes to mobile benchmarks, there are a few names that almost instantly come to mind: Quadrant, AnTuTu, CFBench, etc. However, those primarily test the CPU; when it comes to testing the GPU, one name stands above the rest: GLBenchmark.
A new version of GLBenchmark recently landed in the Play Store, bringing with it some changes that drastically increase the benchmark's relevance on modern devices. For starters, the Egypt benchmark, now known as Egypt HD, has been completely overhauled with richer textures, a new environment, varied shading, and more dynamic lighting/camera angles. In other words, it works the GPU a lot harder. Egypt Classic is still left in place, too, so when you're feeling down about only getting 11-13 fps with the new version, you can fire it up and see 50+ fps once again. That's a good self-esteem booster for both you and your device.
The update also brings support for 1080p, both on and offscreen (though there is an option to change this).
Overall, GLBenchmark shows how far mobile graphics have come over the last several months and is a must-have if you like to see how hardcore your device really is. Be aware, though, GLBenchmark 2.5 only support Android 3.0 and higher.