Chips & Hardware

Deep Dive — The transformer is being taken apart, one layer at a time

The Arena

Deep Dive — The transformer is being taken apart, one layer at a time

For two years the unit of AI infrastructure has been the chip: how many FLOPS, how much memory, how big the rack. In the last three weeks the unit has quietly changed. It is now a piece of a layer. On August 24, at Hot Chips, Nvidia declared its dedicated inference accelerator — built from the technology it acquired from Groq for a reported $20 billion — to be in full production. The system is designed to sit beside a Vera Rubin rack and take over one specific job: generating tokens.

China Mobile Cloud runs attention on GPUs and FFN on brain chips

The Arena

China Mobile Cloud runs attention on GPUs and FFN on brain chips

Two announcements out of China this week point the same direction: when the chip node is capped, the wins have to come from system architecture — and from a build-out policy that finally measures utilization instead of volume. China's first production system that splits a large model across domestic GPUs and brain-inspired chips went live today, and the vendor claims it more than doubles inference output while cutting operating cost by more than 40%.

AI 101 — What is an NPU (neural processing unit)?

The Stack

AI 101 — What is an NPU (neural processing unit)?

An NPU is a chip built for one job: running the math that neural networks do, at a fraction of the power a general-purpose CPU or a graphics GPU would burn. The name covers anything from the block inside your phone's processor to a USB stick in a robot to a rack card in a datacenter. Vendors also call it an AI accelerator or a neural engine, and it is the hardware reason "on-device AI" stopped being a marketing phrase. Why this matters right now The NPU is the quiet spec war of 2026.

An open recipe for IMO gold: Nemotron scores 30/42 at IMO 2026

The Frontier

An open recipe for IMO gold: Nemotron scores 30/42 at IMO 2026

A quiet but consequential morning for machine mathematics: Nvidia has published the full recipe behind an open model reaching the International Mathematical Olympiad gold-medal threshold, and two new papers push at the boundary between informal reasoning and machine-checked proof. Nvidia's Nemotron scored 30 out of 42 points at IMO 2026 — officially graded, above the gold-medal cutoff of 29 — and the company has released everything: the two post-trained model checkpoints, the training data…

SemiAnalysis, Dylan Patel's chip-research shop, just bought its way into markets coverage.

The Arena

SemiAnalysis, Dylan Patel's chip-research shop, just bought its way into markets coverage.

SemiAnalysis has acquired Citrini Research, the thematic investment-research outfit founded by James van Geelen, for an undisclosed sum — and van Geelen is reportedly planning to launch a new fund. Bloomberg first reported the deal. Van Geelen stays on as Citrini's CEO, which suggests the research brand survives as its own unit rather than being folded into SemiAnalysis reports. Why it matters: this is the moment where AI infrastructure analysis and public-markets research officially merged.

Amap's world model builds a 3D city in 10 minutes on one GPU

The Frontier

Amap's world model builds a 3D city in 10 minutes on one GPU

Alibaba's mapping arm used its Street Stars anniversary to make a bigger claim: it now has a world model that generates explorable 3D space, not just renders it. Two smaller stories round out the hour — a computer-vision benchmark that found audio evidence beats extra parameters, and a fresh report that reasoning state can still be replayed into another model. Alibaba's Amap released ABot-Earth 0.7, a 3D-native world model that turns a single satellite image or a text prompt into a…