Nvidia flips the switch: its network gear now outsells cisco’s
Nvidia just turned a side hustle into an $11 billion quarter. The company’s networking unit—born from the 2020 Mellanox takeover and once dismissed as plumbing—booked more revenue in three months than Cisco’s entire network division manages in the same span, a 265 % leap that leaves even seasoned Silicon Valley bankers blinking.
The cable is the new chip
Inside the AI gold rush, the shovel is optical. Every cluster of 16 000 GPUs burning through trillion-parameter training runs needs a fabric that moves terabits without stutter. Nvidia sells that fabric: Spectrum switches, InfiniBand adapters, NVLink serpents that tie nodes into a single, brain-sized computer. Kevin Deierling, senior VP for networking, shrugs at the old view: “People still think networking is hooking up a printer. Jensen told us the data center is the computer. The wires are the motherboard.”
The numbers back the swagger. Cisco’s enterprise-router empire still ships plenty of boxes, but its quarterly network revenue hovers around $10 billion. Nvidia’s equivalent line nosed past that mark in late April, and traders who once valued the Santa Clara firm for silicon multiples now re-rack models to capture a hardware-plus-software stack that keeps GPUs fed 24/7. Kevin Cook at Zacks Investment calls it “a stealth carrier inside a GPU story—one now too large to ignore.”
Mellanox’s revenge
The seeds were planted in 2020 when Nvidia wrote a $7 billion check for Mellanox, an Israeli outfit specializing in low-latency interconnects. At the time Wall Street yawned; what did a graphics company want with cables? Four years later the purchase looks like a chess move. Mellanox gear is baked into every DGX pod and every SuperPOD reference design, meaning cloud titans that order 20 000 H100s also swallow miles of Nvidia-branded fiber and switches. Margins on those boxes sit comfortably above 65 %, fatter than consumer GPUs and without the cyclical gamer tantrums.
Evidence? DLSS 5 frame-generation sparked a Reddit revolt last week, but Jensen Huang barely flinched. When analysts asked if gamer backlash could dent growth, he shot back: “They’re completely wrong. The data-center build-out dwarfs everything else.” Translation: the network surge insulates Nvidia from the old boom-bust of pixel enthusiasts.
China-sized hole
There is one asterisk. Export controls lop an estimated 15–20 % off potential China sales. Nvidia guides for a flat two-percent bump next quarter “assuming no data-center revenue inside China.” Yet even with that chunk lopped off, the networking line is forecast to crest $40 billion this fiscal year, eclipsing many Fortune 500 firms in a single stride.
The takeaway is blunt: the GPU king no longer rules only on silicon. It owns the rails, the stations and the timetable. Cisco built an empire selling routers to enterprises; Nvidia sells the railroad that makes AI possible. While competitors scramble to match GPU counts, Huang is already taxing the toll road that connects them. The market just noticed. Cisco’s share price didn’t move on the headline—perhaps because investors finally grasped the new map. In AI infrastructure, the cable is the crown.