
Written by a model from the transcript; not yet reviewed.
In this episode, Andrew Feldman, CEO and founder of Cerebras, joins the host and partner Eric to discuss the grueling realities of building a hardware and chip company from scratch. They explore the foundational insights behind wafer-scale architecture, the massive capital and technical hurdles of challenging an incumbent like Nvidia, and the hidden complexities of the global semiconductor supply chain, from ASML lithography machines to data center power grids. Feldman shares stories of near-death engineering experiences, including spending 18 months shattering wafers while burning eight million dollars a month before cracking the problem in 2019. The discussion also touches on the explosive demand for AI compute, the surprising role of national infrastructure, and what it takes to survive as a professional David fighting giants.
What makes this episode worth listening to is the rare, unfiltered look into hardware venture capital and deep-tech manufacturing. Rather than high-level platitudes, Feldman and Eric provide concrete details about the 100x performance advantage required to unseat a dominant incumbent, the five-year design horizons, and why software mentalities fail when applied to physical supply chains that depend on dozens of interdependent vendors and massive energy grids.
The episode opens with a brief introduction and host remarks before diving into the discussion.
Andrew discusses the computational intensity of AI workloads and the need for a specialized chip.
The team’s focus on end-to-end control led to world‑class packaging and radical design choices.
Andrew projects the continued demand for inference, the need for more data centers, and the political implications.
Andrew recounts the hard slog, funding struggles, and technical setbacks in the first years.
Andrew explains the scarcity of advanced fabs, the monopoly of ASML, and the lag in U.S. chip manufacturing.
Insights on how a board should support a long‑term, technically intensive venture.
Andrew describes the importance of hiring young, high‑potential talent and building trust quickly.
Discussion of the challenges in building data centers, energy sourcing, and the need for innovation.
Speakers debate the limits of compute resources and the importance of maximizing tokens per watt or per facility.
The conversation shifts to how speed has historically created new markets and opportunities in AI and tech.
Discussion of Cerebras’ strategy to partner with AMD and AWS to increase inference throughput via disaggregation.
Deciding to Build a Better Chipinsight
Andrew Feldman explains the two fundamental questions computer architects ask when a new workload emerges: whether they can make it faster, and whether there is enough work to justify building a new chip.
The Brutal Math of Scaling Hardwaredata
Eric breaks down the 100x performance multiple required for a new hardware company to succeed against incumbents who improve at a rate of 2x per year over a five-year scale-up timeline.
Eighteen Months of Wafers Shatteringstory
Feldman details the harrowing period where Cerebras spent eight million dollars a month for 18 months while continuously shattering wafers before finally stabilizing the temperature in July 2019.
The Multi-Billion Dollar Modern Pyramidinsight
Feldman describes modern semiconductor fabrication plants as modern pyramids costing forty to fifty billion dollars, taking four or five years to build across football fields of space.
Routing Architecture Versus Dedicated Circuitsstrategy
Feldman contrasts rigid circuit-board thinking with flexible router-style architectures, explaining how designing for underlying algebra rather than specific networks allowed Cerebras to naturally handle transformers.
Promoting Young Talent From Withinstrategy
Feldman explains Cerebras's internal policy of promoting young, brilliant product leaders from within without requiring arbitrary tenure, while maintaining that chip manufacturing still requires decades of veteran experience.
The True Source of Nvidia's Successinsight
Feldman argues that Nvidia's historic run is driven less by CUDA or chip architecture and more by the intense grit and relentlessness forged during a decade of trading poorly as a public company.
Growing Up Next to Nobel Laureatesstory
Feldman shares what it was like growing up on the Stanford campus where his neighbors included transistor inventor William Shockley and Nobel laureate Amos Tversky.
“That's right. They're like, can we help? Like, no.”
“Can I build a chip that is better at this work?”
“What that means is you have to go out with something way better. 10, 100, 500 times faster.”
“When you build a chip the size of a dinner plate, you can't go to a catalog and find a heat sink.”
“We've solved this problem that nobody in seventy-five years of compute had ever solved.”
“And the demand is overwhelming.”
“The most valuable company in the world, that sort of intensity and grit for a company of their size, makes them one of the great companies in history.”
“We’re only interested in solving problems that other people can’t solve.”
Andrew Feldman is the co-founder and CEO of Cerebras Systems, the AI chip company he founded in 2016 around a single radical insight: that winning in compute requires not incremental improvement but a fundamentally different architecture. Cerebras is the creator of the world's largest chip, the Wafer Scale Engine, and counts the US government, sovereign cloud providers, and OpenAI among its customers. Alongside Eric Vishria from Benchmark, we discussed why Andrew believes that if you are going to attack Goliath, being 10% or even twice as good is not an available strategy and you have to aim for 100x or 500x better. Andrew walked through Cerebras's near-death experience: 18 months of board meetings where the only thing to report was "still can't make it," spending $8 million a month, and what kept the team going. He explained how we go from sand to a ChatGPT answer and why the US semiconductor supply chain is in a precarious position. Andrew shared what most people get wrong about what makes Nvidia great (it’s not CUDA), and why he thinks of himself as a professional David in an ongoing battle with Goliath. Timestamps: (0:00) Intro (1:07) Why Andrew started Cerebras in 2016 (2:54) Eric on why he invested despite having no chip experience (4:10) Attacking Goliath (9:44) Near-death experiences and the Valley of Death (10:44) 18 months of "still can't make it" (12:16) Solving a 75-year-old compute problem (13:26) What comes after Wafer Scale (16:19) The chip supply chain explained (22:30) Why the US punted a strategic industry (25:51) How to be a good hardware board member (27:50) Hardware vs. software investing (29:05) The pivot from training to inference (27:00) Specialization vs. flexibility (35:22) Young product leaders and seasoned hardware engineers (39:14) External relationships and TSMC (42:20) The AI infrastructure buildout (44:12) The data center supply chain (53:14) Speed creates markets (54:10) Disaggregation with AMD and AWS (55:24) What actually makes Nvidia great (57:30) Near-death experiences and the DNA of a Goliath fighter (59:58) Andrew's childhood next to William Shockley Links: https://x.com/andrewdfeldman https://x.com/cerebras https://x.com/ericvishria https://x.com/jaltma https://uncappedpod.com/ [email protected]
10,864 words · 3 speakers
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