Writing and conversations on frontier technology.

San Francisco, CA
Joined July 2026
It's near-impossible to outbid the HBM shortage, but sidestepping it is a different question GDDR usage, air-cooled PCIe cards, and alternative vendors can all help work around supply chain constraints
I interviewed @neilmovva for @substratemag on latency-insensitive inference, alternative chips, and why massive datacenters face diseconomies of scale. "We've always predicted that async inference is going to eat the world. That could easily be 95% or more of inference demand." Neil's been at the frontier of inference for years, from NVIDIA to co-founding @sailresearchco. I learned a lot from our conversation - you can listen below.
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Substrate retweeted
the conventional view is that datacenters require reliability but if your workload tolerated 95% uptime? 90%? you could move workloads between sites if the dc drops and take advantage of underutilized (cheaper) capacity
I interviewed @neilmovva for @substratemag on latency-insensitive inference, alternative chips, and why massive datacenters face diseconomies of scale. "We've always predicted that async inference is going to eat the world. That could easily be 95% or more of inference demand." Neil's been at the frontier of inference for years, from NVIDIA to co-founding @sailresearchco. I learned a lot from our conversation - you can listen below.
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So long as the frontier labs charge premiums on tokens, they can always outbid startups for compute - for now, NVIDIA's goodwill keeps the ecosystem running
I interviewed @neilmovva for @substratemag on latency-insensitive inference, alternative chips, and why massive datacenters face diseconomies of scale. "We've always predicted that async inference is going to eat the world. That could easily be 95% or more of inference demand." Neil's been at the frontier of inference for years, from NVIDIA to co-founding @sailresearchco. I learned a lot from our conversation - you can listen below.
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On modular datacenters: NVIDIA has been piloting modular (5-20mw) datacenters, and SemiAnalysis predicts they'll make up 31% of capacity by 2028. A big reason why is lead time. 50mw-100mw datacenter lead times are 12-24 months. For <1mw datacenters, 16 weeks
I interviewed @neilmovva for @substratemag on latency-insensitive inference, alternative chips, and why massive datacenters face diseconomies of scale. "We've always predicted that async inference is going to eat the world. That could easily be 95% or more of inference demand." Neil's been at the frontier of inference for years, from NVIDIA to co-founding @sailresearchco. I learned a lot from our conversation - you can listen below.
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"There's no stranded compute for us anymore." Most inference providers avoid stranded capacity. Its reputation for unreliability is well-earned. But if you drop latency requirements for background workloads, you'll unlock pools of compute no one else has at prices no one can beat. Interactivity is expensive. Throughput is cheap. @cattttang spoke with Sail Research co-founder Neil Movva on latency-insensitive inference, alternative chips, and <1MW datacenters. Full conversation below.
I interviewed @neilmovva for @substratemag on latency-insensitive inference, alternative chips, and why massive datacenters face diseconomies of scale. "We've always predicted that async inference is going to eat the world. That could easily be 95% or more of inference demand." Neil's been at the frontier of inference for years, from NVIDIA to co-founding @sailresearchco. I learned a lot from our conversation - you can listen below.
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I find it surprising that less than 5% of SemiAnalysis' revenue comes from Substack. They are incredibly popular...thought it would be higher.
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Replying to @SemiAnalysis_
@SemiAnalysis_ rose to fame from its Substack, but the newsletter only makes up <5% of revenue - their product expansion into models, institutional research, benchmarks, etc. has been massive
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In just a few years, @SemiAnalysis_ has risen to the forefront of AI infrastructure information, with their work referenced by some of of the biggest players in semiconductors. The prediction: "@dylan522p's going to be the greatest analyst of this generation."
I sat down with @dylan522p and spoke with over a dozen people about his information machine. "I don't think anyone who has a traditional equity research background would even try to figure out where $3T in [the AI labs' combined] ARR comes from." Slack private messaging limits, finding CoWoS volume, and the industry they're looking at next - I wrote about SemiAnalysis here: substratemag.com/dylanpatel/…
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Welcome to Substrate Magazine. Substrate covers frontier technology, from RL algorithms to DRAM supply chain. @SemiAnalysis_ is the leading information firm in the largest infrastructure buildout in history. We're excited to profile @dylan522p for our first piece.
I sat down with @dylan522p and spoke with over a dozen people about his information machine. "I don't think anyone who has a traditional equity research background would even try to figure out where $3T in [the AI labs' combined] ARR comes from." Slack private messaging limits, finding CoWoS volume, and the industry they're looking at next - I wrote about SemiAnalysis here: substratemag.com/dylanpatel/…
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