Thanks, Shawn.
We had a strong start to the year. Highlighting our record first quarter was a near tripling of data center revenue, reflecting surging interest in artificial intelligence. Overall, quarterly revenue reached $1.94 billion, up 48% from the year earlier, down 11% sequentially and above our outlook of $1.9 billion. Growth remained broad-based, with year-on-year gains in each of our four platforms, gaming, professional visualization, data center, and automotive. From a reporting segment perspective, Q1 GPU revenue grew 45% to $1.56 billion from a year earlier, and Tegra processor revenue more than doubled to $332 million. And we recognized the remaining $43 million in revenue from our Intel agreement.
Let's start with our gaming platforms. Gaming revenue in the first quarter was $1.03 billion, up 49% year on year. Gamers continue to show great interest in the Pascal-based GPUs, including gaming notebooks. Our Tegra gaming platform also did extremely well. Demand remained healthy for our enthusiast class GeForce GTX 1080 GPU, introduced nearly a year ago. It was complemented this past quarter with the GTX 1080 Ti, which runs 35% faster and was launched at the annual Game Developers Conference in San Francisco. The GTX 1080 Ti is designed to handle the demands of 4K gaming and high-end VR experiences. Typical of many supportive reviews, Ars Technica stated it is undoubtedly a fantastic piece of engineering, cool, quiet, and without rival. Those that demand the absolute very best in cutting-edge graphics need look no further. We also released the next generation of our TITAN-class product, the TITAN Xp, designed for enthusiasts and researchers who demand extreme performance. Gaming continues to be driven by the headlong growth in e-sports. The newest title, Overwatch, added 30 million gamers in its first year. GeForce was the graphics platform of choice at all the top e-sports tournaments, including the finals of the big four international competitions. With apologies to the start of the baseball season, e-sports is now as popular among U.S. male millennials as America's favorite pastime. More people watch gaming than HBO, Netflix, ESPN, and Hulu combined. GeForce sales remained underpinned by the steady stream of AAA titles coming onto market, which continued to push for more chip GPU performance. In the months ahead, we'll see a series of highly anticipated blockbuster titles. Among them are Destiny 2 coming to the PC for the first time, Star Wars Battlefront II, Shadow of War, and the next installment of the Call of Duty franchise, World War II. We are excited to be working within Nintendo on its acclaimed Switch gaming system. Great reviews and reports of the system selling out in many geographies are a strong part of this platform.
Moving to professional visualization, Quadro revenue grew to $205 million, up 8% from a year ago, amid continued demand for high-end real-time rendering and more powerful mobile workstations. We are seeing significant increase in professional VR solutions, driven by Quadro P6000 GPUs. Lockheed Martin is deploying Quadro to create realistic VR walk-throughs of the U.S. Navy's most advanced ships. The Marines utilize VR to train air crew personnel. And IKEA is rolling out VR to many of its stores, helping consumers configure their kitchens from a huge array of options, which they can visualize in sharp detail. Next, data center, record revenue of $409 million was nearly triple that of a year ago. The 38% rise from Q4 marked its seventh consecutive quarter of sequential improvement. Driving growth was demand from cloud service providers and enterprises building training clusters for web services, plus strong gains in high-performance computing, GRID graphics virtualization, and our DGX-1 AI super-computer. AI has quickly emerged as the single most powerful force in technology, and at the center of AI are NVIDIA GPUs. All of the world's major Internet and cloud service providers now use NVIDIA Tesla-based GPU accelerators, AWS, Facebook, Google, IBM, and Microsoft as well as Alibaba, Baidu, and Tencent. We also announced that Microsoft is bringing NVIDIA Tesla P100 and P40 GPUs to its Azure cloud. Organizations are increasingly building out AI-enabled applications using training clusters, evident in part by growing demand for DGX-1. We are seeing a number of significant deals. Among them are Fujitsu's installment of 24 systems integrated into an AI supercomputer for RIKEN, Japan's largest research center, as well as new supercomputers at Oxford University, GE, and Audi. Working with Facebook, we announced the launch of the Caffe2 deep learning framework as well as Big Basin servers with Tesla P100 GPUs. To help meet huge demand for expertise in the field of AI, we announced earlier today plans to train 100 people this year through the NVIDIA Deep Learning Institute, representing a 10x increase from last year. Through onsite training, public events, and online courses, DLI provides practical training on the tools of AI to developers, data scientists, and researchers. Our HPC business doubled year on year, driven by the adoption of Tesla GPUs into supercomputing centers worldwide. The use of AI and accelerated computing in HPC is driving additional demand in governance intelligence, higher education research, and finance. Our GRID graphics virtualization business more than tripled, driven by growth in business services, education, and automotive. Intuit's latest TurboTax release deploys GRID to connect tax filers seeking real-time advice with CPAs. And Honda is using GRID to bring together engineering and design teams based in different countries.
Finally, automotive, revenue grew to a record $140 million, up 24% year over year and 9% sequentially, primarily from infotainment modules. We are continuing to expand our partnerships with companies using AI to address the complex problems of autonomous driving. Since our DRIVE PX 2 AI car platform began shipping just one year ago, more than 225 car and truck makers, suppliers, research organizations, and startups have begun developing with it. That number has grown by more than 50% in the past quarter alone, the result of the platform's enhanced processing power and the introduction of Tensor RT for its in-vehicle AI inferencing. This quarter, we announced two important partnerships. Bosch, the world's largest auto supplier, which does business all over the world's carmakers, is working to create a new AI self-driving car computer based on our Xavier platform. And PACCAR, one of the largest truck makers, is developing self-driving solutions for Peterbilt, Kenworth, and DAF. We continue to view AI as the only solution for autonomous driving. The nearly infinite range of road conditions, traffic patterns, and unexpected events are impossible to anticipate with hand-coded software or computer vision alone. We expect our DRIVE PX 2 AI platform to be capable of delivering Level 3 autonomy for cars, trucks, and shuttles by the end of the year, with Level 4 autonomy moving into production by the end of 2018. Now turning to the rest of the Q1 income statement, GAAP and non-GAAP gross margins for the first quarter were 59.4% and 59.6% respectively, reflecting the decline in Intel licensing revenue.
Q1 GAAP operating expenses were $596 million. Non-GAAP operating expenses were $517 million, up 17% from a year ago, reflecting hiring for our growth initiative. GAAP operating income was $554 million and non-GAAP operating income was $637 million, nearly doubling from a year ago. For the first quarter, GAAP net income was $507 million. Non-GAAP net income was $533 million, more than doubling from a year ago, reflecting revenue strength as well as gross margin and operating margin expansion.
For fiscal 2018, we intend to return approximately $1.25 billion to shareholders through share repurchases and quarterly cash dividends. In Q1, we issued $82 million in quarterly cash dividends. Now turning to the outlook for the second quarter of fiscal 2018, we expect revenue to be $1.95 billion plus or minus 2%.
Excluding the expiry of the Intel licensing agreement, total revenue is expected to grow 3% sequentially. GAAP and non-GAAP gross margins are expected to be 58.4%, 58.6% respectively plus or minus 50 basis points. These reflect approximately a 100 basis points impact from the expiry of the Intel licensing agreement. GAAP operating expenses are expected to be approximately $605 million. Non-GAAP operating expenses are expected to be approximately $530 million. GAAP OI&E is expected to be an expense of approximately $8 million, inclusive of additional charges from early conversions of convertible notes. Non-GAAP OI&E is expected to be an expense of approximately $3 million. GAAP and non-GAAP tax rates for the second quarter of fiscal 2018 are both expected to be 17% plus or minus 1%, excluding discrete items. Further financial details are included in the CFO commentary and other information available on our IR website.
Finally, this week we are sponsoring our annual GPU Technology Conference here in Silicon Valley. Reflecting the surging importance of accelerating computing, GTC has grown to more than 7,000 attendees from 60 countries, up from 1,000 when we started eight years ago. Among its highlights, Jen-Hsun will deliver a news-filled keynote tomorrow morning. We have 550-plus talks, more than half on AI. Developers will have access to 70 labs and workshops to learn about deep learning and GPU computing. And we will award a total of $1.5 million to the six most promising companies among the 1,300 in our Inception program for AI startups. We will be hosting our annual Investor Day tomorrow and hope to see many of you there.
We will now open the call for questions. Please limit your questions to two. Operator, will you please poll for the questions?