Nvidia Tegra 2 - Graphics Performance Update

So I have a confession to make. Before we posted our Tegra 2 performance preview, I ran the Quake 3 demo on the Viewsonic G Tablet and the Samsung Galaxy Tab three times each. I ended up with 49.0, 48.2 and 49.9 fps on the Viewsonic, and 31.9, 32.2, and 32.1 fps on the Galaxy Tab. Run the averages, and you get 49.1 fps for the Viewsonic and 32.1 fps for the Galaxy. Based on some input from Imagination and other Galaxy Tab users, we decided to retest the Galaxy Tab, since our results were a good bit lower than what they were reporting.

And on re-running the Quake 3 benchmark, I got results in the 44.9 - 46.0 range. I ran it over 50 times trying to replicate the previous scores, but under no conditions (settings, background applications, etc) could I get anywhere near my previous result. I know for a fact that the settings were all correct and that there were no previously running applications, so I really have no idea why I got a framerate that low, much less why it was repeatable.

In addition to retesting Quake 3 on the Galaxy Tab, I also ran both slates through GLBenchmark 2.0, which we recently added to our benchmark suite. The combination of the two gave me enough reason to write up an update to our Tegra 2 performance preview from two weeks ago. I was also planning to compare Quadrant’s 3D graphics score, but I was unable to get the SlideME store working on the Viewsonic to download Quadrant Professional.

So, let’s get to it. With the revised Quake 3 benchmarks, Tegra 2 has a slight 10% lead over the SGX 540, bringing it more in line with what we expected. Looking at our GLBenchmark 2.0 results, we can see that Tegra 2 has the lead here as well, though by a slightly larger margin. In GLBenchmark Pro, the Tegra 2 has a 30% lead over the Hummingbird, while in the more-demanding Egypt benchmark, the gap shrinks to 20.4%.



So while the performance difference isn’t nearly as dramatic as we originally thought, most of what we said before still holds true. It looks like Tegra 2 has the potential to be the best SoC for Android gaming, making it a really attractive platform for tablets. With all the rumours flying around about Google making Tegra 2 the reference platform for Honeycomb-based tablets, apparently we’re not the only ones who think so. The question is how well will it handle existing 3D content that's likely optimized for Qualcomm and Imagination Technologies GPUs.

We’ll take a more in-depth look at Tegra 2’s performance as well as power consumption in our full review later this month, and hopefully by that time we can give you the Quadrant benchmarks as well. But for now, we can say that Tegra 2 is the most powerful SoC on the market at present and makes for a very capable tablet platform.