In addition to using the Galaxy S III in a variety of everyday usage scenarios, we also conducted some formal performance testing to see how well the device compared to some other smartphones.
Android CPU testing
The Samsung Galaxy S III outscored all of the other phones in Linpack's multi-thread test. The phone was slightly behind the HTC One X (with the same CPU) in the single-thread test. Overall, Linpack confirms what we experienced: This phone offers excellent all around performance.
Android graphics testing
The Galaxy S III again topped the charts in the Emperor's New Clothes test portion of An3DBench XL. The phone also performed quite well in the Flower Power and Magic Island tests. Given the Galaxy S III's high-resolution screen, these scores are especially impressive since many of the phones in the comparison have a lower resolution screen and therefore don't have to work quite as hard during the test.
GL Benchmark also shows the power and performance of the Galaxy S III. The Egypt Offscreen test component of GL Benchmark levels the playing field among the phones by rendering off-screen at the same 1280x720 resolution on every device. Although the HTC One X beat out the Galaxy S III by a couple frames per second, the Galaxy S III performed very well and outpaced the Galaxy S II and Motorola Droid Razr.