Thanks, Simona.
Q4 was another record quarter with revenue exceeding $5 billion and year-on-year growth accelerating to 61%. Full-year revenue was also a record at $16.7 billion, up 53%. Our Gaming business have reached record revenue of $2.5 billion in Q4, up 10% sequentially, and up 67% from a year earlier. Full-year gaming revenue was a record at $7.8 billion, up 41%.
Demand is incredible for our new GeForce RTX 30 Series products based on the NVIDIA Ampere GPU architecture. In early December, we launched the GeForce RTX 3060 Ti, which joined the previously launched RTX 3090, 3080, and 3070. The entire 30 Series lineup has been hard to keep in stock and we exited Q4 with channel inventories even lower than when we started. Although we are increasing supply, channel inventories will likely remain low throughout Q1. GeForce RTX 30 series graphics cards were a holiday sensation do not just do their amazing performance, but also to the rich features, including our second-generation RTX ray tracing technologies and DLSS, AI-powered performance accelerator, which massively boost frame rates in graphically demanding titles. Three dozen games now all support RTX, including the top Battle Royale game, Fortnite; the top role-playing game, Cyberpunk 2077; the top massively multiplayer online game, World of Warcraft; and the best-selling game of all time, Minecraft. RTX has clearly set the new standard in gaming. Building on this momentum at CES in January, we introduced a wave of Ampere architecture gaming products, including our biggest ever laptop launch powered by GeForce RTX 3060, 3070, and 3080 laptop GPUs and with our third-generation Max-Q technology.
These new thin and lightweight gaming laptops increased performance and energy efficiency by up to 2x from the prior generation. RTX 3060 laptops start $999 and are faster than the previous generation laptops, which sold for $2,500. The incredible performance, design and price points of these new laptops will delight the growing universe of gamers and creators as well as students and professionals. The gaming laptop market has grown seven-fold in the past seven years and momentum is building. With top OEMs bringing to market a record 70-plus laptop models based on the GeForce RTX 30 series. GeForce laptops as a whole are the fastest-growing and one of the largest gaming platforms. Also at CES, we announced the GeForce RTX 3060 GPU, priced at $329, extending the 30 series desktop liner further into the mainstream. We expect strong demand when it launches this Friday as 60-class GPUs have traditionally been our most popular products.
Starting with the 3060, we're taking an important step to maximize the supply of GeForce GPUs for gamers. Users are constantly discovering new applications for our powerful programmable GPUs and cryptocurrency mining is one of them. With rising Ethereum prices, there are indications that minors are behind GPUs. We would like GeForce GPUs to end up with gamers. So we have created a new special software drivers that will detect the Ethereum mining algorithm cutting in half the mining efficiency of the GeForce RTX 3060. We suspect the significant increase in the Ethereum network hash rate observed over the past few months was driven by a combination of previously installed mining capacities that was reactivated as well as new sales of GPUs and ASICs. Since our GPUs are sold to graphics card manufacturers and then onto distribution, we don't have the ability to accurately track or quantify their end use. Analyst estimate suggest that cryptomining contributed 100 million to 300 million to our Q4 revenue, a relatively small portion of our gaming revenue in Q4.
Cryptocurrencies have recently started to be accepted by companies and financial institutions and show increased signs of staying power to address industrial Ethereum mining demand, last week we announced a new line of NVIDIA CMPs or cryptomining processors. Shipments will start in March. CMPs lack display outputs and have other optimizations that improve cryptomining power efficiency. CMP products will let us gain some visibility into the contribution of cryptomining to our overall revenue. For Q1, we estimate that CMP will contribute approximately 15 million. We plan to sell these products to industrial miners. We will quantify their contribution each quarter for transparency.
Over the past year, it has become clear that we've entered a new era in which gaming is an integral part of global culture. The number of concurrent users on Steam has more than doubled since 2018 and continues to hit new records. In 2020 alone, more than 100 billion hours of gaming content was seen on YouTube and 0.5 billion people watched e-sports. Increasingly, we aren't just gaming. We're also watching sports, attending concerts, creating content and connecting with our friends in virtual environments. Additionally, we are excited about the new experiences like VR. Significantly more content is now available, including arguably the first VR killer app, Beat Saber, and there is now almost 2 million VR users on Steam.
And with these powerful structural shifts, we expect our gaming business to remain on a robust growth trajectory. The GeForce RTX 30 Series GPUs have kicked off a powerful upgrade cycle and we estimate only around 15% of GeForce gamers on an RTX cost GPU, which is needed to experience the beautiful ray trace graphics of modern games. Moreover, the universe of gamers is rapidly expanding and the reach of GeForce has extended beyond gamers to some 45 million creators. In addition, gaming revenue continues to benefit from a favorable mix shift as gamers and creators keep moving to higher-end GPUs, we expect another great year for GeForce. Earlier this month, we celebrated the one year anniversary of the GeForce NOW cloud gaming platform, which is now over 6 million members strong. GeForce now offers 800 PCs from over 300 publishers, more than any other cloud gaming service including any of the most played free to play games, starting with support for windows PCs, Macs, and Android devices we added support in recent months to Chromebooks, iPhones and iPads. GFN has grown globally with more than 65 countries on our service and more — added regularly by our GeForce NOW alliance partners.
Moving to Pro Vis, Q4 revenue was $307 million, up 30% sequentially and down 10% year-on-year and ahead of our expectations full-year revenue was $1.1 billion was down 13%. Strong sequential growth was driven primarily by a recovery in desktop workstations as some customers returned to the office and enterprises resumed purchases that had been deferred by the pandemic. Notebook GPUs grew sequentially to a record as enterprises continue to support remote workforce initiatives. Looking ahead, the reopening of businesses will benefit desktop workstations, but longer-term workforce trends will likely shift our mix to notebook GPUs and cloud offerings. Healthcare was a standout vertical in the quarter with significant orders from GE Siemens and Oxford Nanopore technologies, public sector and automotive also so strength. Omniverse are real time 3D collaboration and simulation platform is now an open beta. Over 500 creators and professionals have tested Omniverse through our early access program. Omniverse is one of our most important and exciting platforms. We are divided by its initial acceptance and look forward to sharing more details on its long-term growth opportunity in the coming months.
Moving to Automotive; Q4 revenue was $145 million, up 16% sequentially and down 11% year-on-year. Full-year revenue of $536 million, declined 23%. Sequential growth was driven by continued recovering in the global automotive production volumes and growth in AI cockpit revenue. Year-on-year decline reflects the expected ramp down of legacy infotainment.
Nvidia has emerged as the industry's leading end-to-end full stack technology provider for self-driving and AI enabled vehicles or in the SOC that drive self-driving platform is built on delivers an unrivaled 254 trillions of operations per second of performance on industry leading power efficiency, helping to revolutionize the transportation industry. Our technology leadership has driven a robust rapidly growing set of opportunities. We have great momentum with an expanding list of electric vehicle OEMs, including NIO, SAIC, Li Auto and Xpeng which are all using the Nvidia drive platform to power their next generation of vehicles. We look forward to growing with them as they continue to scale. Our software defined platforms is the only solution that spans from the data center for training deep neural net and running physically accurate simulations to a full stack in car solutions scaling for ADAS to Level 5 fully autonomous functionality. Autonomous vehicle companies are harnessing this technology. Zoox recently unveiled its Level 5 bi-directional robotaxi powered by Nvidia, and wide launched its next generation countless autonomous truck using NVIDIA Drive Orin. And earlier this year, Mercedes announced a 56-inch wide MBUX Hyperscreen powered by Nvidia AI cockpit technology. This will builds on our momentum with Mercedes first-generation MBUX system, which is now in 1.8 million cars. We are in the early innings of a significant opportunity. We have built a multi-billion dollar design win pipeline for our self-driving the AI cockpit solutions, which will drive a material inflection in revenue over the next few years. Our transformational partnership with Mercedes announced last June demonstrates the power of our evolving business model as we expand our addressable market and layer in software revenue. We are exceptionally well positioned to capitalize on the significant opportunity that lies ahead.
Moving to data center; revenue was $1.9 billion, which exceeded our expectations was comparable to last quarter and up 97% from the year ago period, which did not include Mellanox. Data center compute revenue was up 45% year-on-year. Full-year data center revenue rose 125% to a record $6.7 billion, including almost 70% growth from data center compute. From a sequential perspective, the data center computes stronger than expected double-digit growth more than offset the anticipated decline in Mellanox revenue, which included a large non-reoccurring network sale to a single OEM in Q3. Compute growth was lead by vertical industries where OEM partners continued ramping up their 100 — day 100 base servers and our own DGX system sales were strong. Vertical industries were well over 50% of data center revenue across compute and networking with particular strength in super computing, financial services, higher education and consumer internet verticals. Additionally, hyperscale customers continued to deploy the A100 driving both sequential growth and exceptionally strong year-on-year growth in data center compute. The A100 has been adopted by all major cloud customers globally and is being deployed by hyperscale customers for internal workloads. Still we are in the early stages of adoption and expect continued growth this year. The ramp of the A100 has been smoother and accomplished by better visibility than prior generation. It's universal AI training and inference capabilities as well as support for wider set of applications and outstanding performance are driving five customer utilization; a clear sign of the A100's value.
Turning to Mellanox. We are seeing continued strong traction and robust momentum across our customer set. Its revenue was up over 30% from Mellanox's Q4 revenue in calendar 2019 when it was still a standalone company. Year-on-year growth in the quarter was led by hyperscale and large consumer internet customers, which grew over 60% from last year with several contributing record revenues. Consistent with our outlook Mellanox had a sequential decline impacted by a non-reoccurring sales to a China OEM in Q3. We expect to return to sequential growth in Q1 driven by strong demand for our high speed networking products, including the ramp of ConnectX adapters with CSPs and all major server OEMs in their upcoming refresh. We also see strong momentum in high-performance computing with HDR InfiniBand products. For example, we won six of the seven supercomputers awarded over the past few months by Euro HPC. Starting next quarter, we will continue to provide color on networking as part of the data center market platform, but we will no longer break out Mellanox revenue separately. Looking forward, we are incredibly excited about the opportunities and data center. Accelerated computing is not only delivering super more loss, gains and performance but there's also an energy efficient and cost effective method of computing and virtually every industry is adopting technology with greater urgency as companies adapt to the new world of more distributed workers and customers. As industries embark on this journey, they are also increasingly focused on combating climate change. To that end, the A100 performed AI computations with one-twentieth the power consumption of CPU's. And powers are saline supercomputer, which is number one on the Green500 list of the world's most efficient supercomputers. Indeed Nvidia's powered machines recently captured 25 of the top 30 spots on the Green500 list. Accelerated computing is not only serving the exponential growth and demand for compute; it can also help bend the power consumption curve. With accelerated computing Nvidia is pioneering a [inaudible] forward the computing industry. Before I moved to the P&L and outlook, let me give you an update on our proposed acquisition of Arm. In September, we announced plans to acquire Arm from SoftBank Group and a transaction that will create the premier computing company for the age of AI. At that time, we said it would take approximately 18 months to secure regulatory approvals in the U.S., the UK, the EU, China and other jurisdictions. Thorough reviews are typical with the deal of this size. This process is moving forward as expected. We are in constructive dialogue with the relevant authorities and are confident that regulators will see the benefits to the entire tech ecosystem. As we have said, this combination will spur competition together Arm and Nvidia will provide greater choice to the data center ecosystem, a compelling alternative CPU architecture for the market and further enhance Arms' offering in mobile and embedded. Our intention is to increase investment in Arm's existing roadmap, adding resources to stimulate growth in new markets. We love and intent to maintain Arm's open licensing model, a commitment guaranteed both by long-term legally binding contracts, as well as our own interest in ensuring this investment is a profitable one for us. We are on the cusp of new age in which AI fuels industries ranging from healthcare to scientific research to the environment. With this transaction, our vision is to boost Arm's potential, so it can thrive in this new era and grow into promising new markets.
Moving to the rest of the P&L. Q4 GAAP gross margins were 63.1% and non-GAAP gross margins were 65.5%. GAAP gross margins declined year-on-year due to amortization of developed technology acquired from Mellanox, partially offset by product mix. The sequential increase was due to higher margins for gaming GPU and lower IP related costs, partially offset by lower margin mix in our data center portfolio. Non-GAAP gross margins increased by 10 basis points year-on-year and was flat sequentially in-line with our expectations.
Q4 GAAP EPS was $2.31, up 51% from a year earlier. Non-GAAP EPS was $3.10, up 64% from a year ago. Q4 cash from operations was a record $2.07 billion. With that, let me turn to the outlook for the first quarter of fiscal 2022.
Revenue is expected to be $5.3 billion plus or minus 2% with most of the sequential growth driven by gaming. GAAP and non-GAAP gross margins are expected to be 63.8% and 66% respectively plus or minus 50 basis points. GAAP and non-GAAP operating expenses are expected to be approximately $1.67 billion, and $1.2 billion respectively. For the full-year we expect to grow non-GAAP OPEX in the mid-20% range. GAAP and non-GAAP, other income and expenses are both expected to be an extent of approximately $50 million. GAAP and non-GAAP tax rates are both expected to be 10% plus or minus 1%, excluding discrete items. Capital expenditures are expected to be approximately $300 million to $325 million. Further financial details are included in the CFO commentary and other information on our IR website.
In closing, let me highlight upcoming events for the financial community. We will be virtually attending to Raymond James Institutional Investors Conference on March 1st. The Morgan Stanley Technology, Media and Telecom Conference on March 3rd; and the Arete Virtual Semis Conference on March 3rd. In addition, we will be hosting a virtual Investor Day on Monday, April 12th following a live stream of Jensen's opening keynote at our GPU Technology Conference. Our earnings call to discuss our first quarter and full — our first quarter is scheduled for Wednesday, May 26. We will now open the call for questions. Operator, would you please poll for questions. Thank you.