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Vik's Newsletter

Vikram Sekar
Hundreds of paid subscribers

AI infrastructure research across photonics, memory, interconnects, power, and packaging. Engineering depth translated for professionals and investors.

Platform
Substack
PricingFreemiumPublishesTwice weekly
Issues199Founded3 years agoLast Issue10 days ago
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Latest Issues

OCP 2026: MicroVCSELs are gaining attention, but microLEDs still have a case

The physics behind Credo’s pivot, the unfinished case for microLEDs, and ams OSRAM’s path to AI revenue.

A lot of excitement at OCP Global Summit 2026 was around Credo’s pivot to microVCSELs (Vertical Cavity Surface Emitting Lasers), despi...

10 days ago
41
3
Paid

The PAM4 vs PAM6 Dilemma for 448G Copper Interconnects

and what moving to PAM6 modulation for copper really entails.

It’s been an interesting week in the networking world. I was at a meeting organized by the Ethernet Alliance called Technology Exploration Forum (TEF), and a bunch of smart peop...

22 days ago
35
2
Paid

TEF and OCP Global Summit 2026: Game Plan

OCP Global Summit (Oct 12-15) is highly anticipated this year, but I also signed up for a 2-day session (Oct 7-8) held by the Ethernet Alliance called Technology Exploration Forum (TEF) on “The AI Future: Ethernet.” Semicon West overlaps wi...

a month ago
24
9

800VDC: Mapping the Power Semi Space for Sidecar Deployments

The transition to higher voltage is messy for AI datacenters. How investors should think about it.

Anthropic’s S1 filing reveals an important number for the AI buildout: they expect to spend $518B in building out AI infrastructure over the...

a month ago
44
6
Paid

How Many CPUs Do Personal AI Assistants Need?

What a billion personal AI agents could mean for CPU demand, and why memory may set the limit.

The Rise of Personal Agents

a month ago
50
3
Paid

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  • Vikram Sekar

    Physics-first semi research

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