our current litigation matters. However, there are many uncertainties associated with any litigation or investigations, and we cannot be certain that these actions or other third-party claims against us will be resolved without costly litigation, fines and/or substantial settlement payments. If that occurs, our business, financial condition and results of operations could be materially and adversely affected. If information becomes available that causes us to determine that a loss in any of our pending litigation, investigations or settlements is probable, and we can reasonably estimate the loss associated with such events, we will record the loss in accordance with U.S. GAAP. However, the actual liability in any such litigation or investigation may be materially different from our estimates, which could require us to record additional costs.



Results of Operations

 

The following table sets forth, for the periods indicated, certain items in our consolidated statements of operations expressed as a percentage of revenue. 

  

Revenue was $4.68 billion, $4.13 billion and $4.28 billion for fiscal years 2015, 2014 and 2013, respectively. A discussion of our revenue results for each of our reporting segments and the All Other category is as follows:



GPU Business. GPU business revenue increased by 11% in fiscal year 2015 compared to fiscal year 2014. This increase was due primarily to higher revenue from GeForce GTX GPUs and associated memory for gaming, reflecting a combination of continued strength in PC gaming and increased sales of our Maxwell-based GPU products. Revenue from Tesla for accelerated datacenter computing increased due to large project wins with cloud service providers and revenue from our NVIDIA GRID virtualization products also increased as this platform gained momentum. Revenue from GPU products for mainstream PC OEMs declined compared to last year.



GPU business revenue increased by 7% in fiscal year 2014 compared to fiscal year 2013. This increase was largely attributable to strength in our high-end GeForce GTX GPUs driven by gaming market segment demand. The GPU business also benefited from higher sales of Tesla accelerated datacenter computing and Quadro enterprise products in fiscal year 2014. Offsetting these growth areas were declines in the overall market for mainstream desktop PCs and notebooks, which contributed to lower unit volumes of our mainstream GeForce GPUs.



Tegra Processor Business.  Tegra Processor business revenue increased by 45% in fiscal year 2015 compared to fiscal year 2014. This increase was driven by higher sales of Tegra products serving automotive infotainment systems, smartphones and tablet devices, and the onset of SHIELD tablet sales in fiscal year 2015.



Tegra Processor business revenue decreased by 48% in fiscal year 2014 compared to fiscal year 2013. This decrease was primarily due to lower sales of our previous generation Tegra 3-based products for smartphones and tablet devices. Additionally, sales of our embedded products for entertainment devices and revenue from license fees related to game consoles also decreased during fiscal year 2014. These decreases were partially