Thanks, Mark. With the interim introduction, I thought on our outlook I was getting demoted already. But look, coming off a record 2018, our top line results came in slightly higher than expectations, with upsides in the PC and IoT segments, offset by incremental NAND pricing weakness. Total revenue of $16.1 billion was flat year-over-year, as our PC-centric business grew 4% and our data-centric businesses were down 5%. The team executed well, though underlying trends are concerning, and as a result, we've revised our expectations down for the full year. I'll give you some insight into the customer trends informing our outlook, but first, I'd like to take a few minutes to recap the progress we've made over the first quarter. It's been just under 3 months since I was honored with the best job in the world. At that time, I said that our leadership team would focus relentlessly on delivering for our customers to take advantage of the biggest opportunity in our company's history. We're making important progress by intensifying our focus in 3 key areas: expanding our TAM, accelerating innovation and improving our execution while evolving our culture. I'd like to spend a few minutes talking about our philosophy and progress in each of those areas. First, expanding our TAM. We are transforming from a PC-centric company to a data-centric company, and our ambitions are bigger than they've ever been. Our aim is to identify and capitalize on key technology inflections that set us up to play a larger role in our customers' success while improving returns for our owners. You can see the impact of this approach in our Q1 execution. For example, our first-ever data-centric portfolio launch marked an important milestone in our efforts to capitalize on the AI opportunity and undisputed technology inflection. Our new second-generation Xeon Scalable is the only processor in the industry with built-in artificial intelligence acceleration. Not only did we deliver a 14x generation-over-generation performance improvement, but we also showed CPU performance beating GPU performance on major AI workloads like recommendation engines. And we worked closely with the software industry ahead of the launch to deliver a great out-of-the-box experience for customers like Siemens. They're collaborating with us on a breakthrough AI-based cardiac MRI model.
This application has the potential to provide real-time diagnosis using the DL Boost technology in our newest Xeon Scalable processor. Another TAM-expanding business that continues to gain traction is Mobileye, with 8 new global ADAS designs in the first quarter alone, including our first win in India. Mobileye's real-time crowd-sourced mapping technology, Road Experience Management or REM, continues to build momentum with a major North American automaker adopting this breakthrough data-centric capability. Autonomous driving is a technology inflection that we're ready to lead. 2019 will be a foundational year for another disruptive technology, 5G.
As you know, we recently sharpened our 5G focus. When it became apparent that we don't have a clear path to profitability in 5G smartphone modems, we acted. We are now winding down that business and conducting a strategic assessment of 5G modems for the PC and IoT sectors while continuing to meet our current 4G customer commitments.
By acting now, we focus our 5G efforts on the transformation of the wireless network and edge infrastructure, where we have a clear technology advantage, market share to win and a strategic role to play with customers. At Mobile World Congress, we demonstrated a range of 5G products under development, including the 5G-ready N3000 FPGA acceleration card and the new 10-nanometer-based Snow Ridge network SoC for use in 5G base stations. As networks cloudify, Intel is in a great position to win in this base station segment, where we expect to grow to 40% market segment share by 2022. The vast majority of the 5G market opportunity and profit is in the transformation of network and edge infrastructure, where we are now laser focused. Next, accelerating innovation.
Successfully competing in a bigger TAM requires a broad range of products and technologies. Only Intel has the breadth of IP to deliver leadership products across increasingly diverse workloads for the data-centric era. Harnessing data for discovery, invention and business value is not a one-size-fits-all computing challenge. That's why we are investing in 6 important pillars of innovation: process technology, architecture, memory, interconnect, security features and software. Already this year, we've introduced incredible examples of this approach to innovation across the business. Let me take a minute to talk about a few. We are currently architecting what we expect will be the United States' first exascale supercomputer for the U.S. Department of Energy's Argonne National Laboratory. This supercomputer, called Aurora, will be delivered in 2021 and powered by Intel technologies designed specifically for the convergence of artificial intelligence and high-performance computing. These include a future generation of the Intel Xeon Scalable processor, Intel's Xe compute architecture, a future generation of Optane persistent memory and Intel's One API software. It's a great example of how our data-centric products architected together can deliver technology breakthroughs for our customers. We are also accelerating innovation in our PC-centric business. For example, our team is hard at work with our OEM customers to define and deliver a stunning new class of next-generation laptops. We call this Project Athena, and the first of these sleek, beautiful designs are coming in the second half of 2019. And just this week, we launched the most powerful generation of Intel Core mobile processors ever, designed for gamers and content creators. On the process technology front, our teams executed well in Q1 and our velocity is increasing. We remain on track to have volume client systems on shelves for the holiday selling season. And over the past 4 months, the organization drove a nearly 2x improvement in the rate at which 10-nanometer products moved through our factories. Finally, execution and culture.
This is about concentrating our resources on the vital few programs that will have an impact on our customers' success and our owners' return, rather than the trivial many. Over the last couple of years, that focus has resulted in exiting McAfee and wearables business, shutting down Saffron and divesting Wind River. And our spending as a percentage of revenue has gone from approximately 36% to about 30% this quarter. It has allowed us to invest more of our resources, and just as importantly, our collective attention and focus, where it really counts. By doing fewer things, we'll execute better at the things that matter most.
Specific areas where we need to improve execution include meeting customer demand and delivering on our 10-nanometer lineup of products, and we are making progress. Our supply constraints have had a disruptive impact on our customers and ecosystem. We've committed never again to be a constraint on our customers' growth. We've increased capacity to improve our position in the second half, although product mix will continue to be a challenge in the third quarter as our teams align available supply with customer demand.
As I shared earlier, our confidence in 10-nanometer is also improving. In addition to the manufacturing velocity improvement I described earlier, we expect to qualify our first volume 10-nanometer product, Icelake, this quarter and are increasing our 10-nanometer volume goals for the year. I'll shift now to our full year outlook. Going forward, George will deliver our forecast. But given this is his third week with us, I'll share my thoughts on our full year reset and he'll review our first quarter results and second quarter guide.
Our conversations with customers and partners across our PC and data-centric businesses over the past couple of months have made several trends clear. The decline in memory pricing has intensified. The data center inventory and capacity digestion that we described in January is more pronounced than we expected, and China headwinds have increased, leading to a more cautious IT spending environment. And yet those same customer conversations reinforce our confidence that demand will improve in the second half. So we've reassessed our '19 expectations based on the challenges we're seeing. Our full year outlook is now $69 billion in revenue, down 3% year-over-year and down approximately $2.5 billion from our previous estimate. Given the magnitude of change, we'll be somewhat more granular in explaining the drivers. We now see data-centric revenue down low single digits year-over-year, with DCG down mid-single digits year-over-year off a tough compare, continued China weakness and inventory and capacity absorption. We are also anticipating an incrementally more challenging NAND pricing environment. Our PC-centric forecast remains unchanged at low single digits.
We are forecasting operating margin to be 32%, down approximately 3 points year-over-year and down approximately 2 points from our previous guide. This outlook reflects lower full year revenue and a year-over-year decline in gross margins as a result of the 10-nanometer ramp and NAND pricing. We continue to see good discipline on spending and expect our exit from the 5G smartphone modem segment, annualized in 2018 spending actions, and incremental spending efficiencies to reduce OpEx by approximately $1 billion year-over-year, partially offsetting the impact of lower gross margin. We now forecast full year EPS at $4.35 per share, down approximately 5% year-over-year and $0.25 from our previous guide. We now expect our full year tax rate to be 12%, up 1 point year-over-year and down 1.5 points versus our prior guide, largely as a result of lower pretax income.
Before I hand the call over to George, I'd like to welcome him as Intel's new CFO. I've known George for a long time from his CFO days at Applied Materials while I was a board member. He brings deep industry knowledge from prior roles. He's a true team player and he cares deeply about people development and diversity. George will review our first quarter financials and second quarter guide, then we'll get to your questions. George?