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Creating the A5X SoC in the third-gen iPad, for example, required that Apple double the number of GPU cores in its A5, moving from an MP2 GPU to an MP4. Secondly, Nvidia simply isn’t in the same position as Samsung or, to a lesser degree, Apple. One reason for that is simply that Tegra 3 is more than a year old, and we're on the cusp of seeing its successor at CES. ARM, Imagination Technologies, and Qualcomm all have faster engines. To be clear, Nvidia doesn’t currently have the fastest mobile GPU on the block.

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The company is known to leverage its close relationships with video game developers on the PC side, and now it's doing the same with the creators of mobile titles.

So, by simply doubling the number of pixel shader units in Tegra 3, Nvidia allows developers to add extra effects to existing games. Since many games are designed for iOS-based devices with PowerVR GPUs, their geometry is limited. Ironically, Nvidia takes advantage of one of PowerVR’s limitations. The most notable use of Mali is in Samsung’s Exynos, while Adreno is exclusive to Qualcomm’s own Snapdragon SoCs.Īlthough each rendering type has its pros and cons, suffice it to say, Nvidia’s choice is coherent. Meanwhile, Qualcomm employs a different kind of hybrid mode in the Andreno 320, which can render either in TBR or IMR.

ARM’s Mali uses a hybrid known as Tile-Based Immediate Mode Rendering (TBIMR).

While Imagination Technologies' PowerVR technology is found in SoCs from Intel (Medfield), Samsung (Hummingbird), and Texas Instruments (OMAP), it's most notably the graphics force behind Apple’s venerable line of iOS-based devices (A x).ĪRM and Qualcomm GPUs utilize a combination of the two basic rendering modes. Eliminating non-visible areas from the calculations also reduces the necessary bandwidth, which is a very important advantage in the mobile world. Breaking up each frame into separately-rendered tiles gives PowerVR fairly linear scalability, since multiplying GPU cores multiplies GPU performance.