This week on the channel +2.4M views this week

From watts to tokens, freeCodeCamp.org explains the AI factory

Kian's infrastructure course follows electricity from the grid to GPUs, with cooling, construction and cloud economics along the way.

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freeCodeCamp.org Story of October 22, 2026Trari Newsroom

Why this story? The channel's weekly summary: what went up this week, what is drawing views now, and where the channel stands among similar channels.

Inside an AI Factory – Power, Cooling, and GPUs Explained

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6:01Ohm's law connects voltage, current and resistance through a simple example circuit.
7:20Doubling current quadruples resistive heat loss, explaining why power distribution needs careful voltage choices.
24:17Transformers change AC voltage, rectifiers convert AC to DC, and inverters convert DC to AC.
27:06An uninterruptible power supply keeps equipment powered during interruptions; online and offline designs handle the transition differently.
36:27Liquid-cooling loops carry GPU heat through cold plates and cooling distribution units toward external heat rejection.
41:05Power Usage Effectiveness compares total facility energy with the energy consumed by its IT equipment.

A coding lesson doesn't usually begin with the power grid. But freeCodeCamp.org's most-watched new upload takes the long route to artificial intelligence: through circuits, substations, backup power and the equipment that carries heat away from chips.

"Inside an AI Factory – Power, Cooling, and GPUs Explained" has drawn roughly 164,000 views. Instructor Kian presents slides and diagrams rather than a walk-through vlog, a distinction some viewers mention in the comments. He starts with closed circuits and Ohm's law, then explains a consequential bit of arithmetic: doubling current quadruples resistive heat loss. The sprawling course eventually reaches networking, water use and GPU cloud economics. Its description also acknowledges channel support from Scrimba.

The audience brings a suitably ambitious homework list. Several commenters request a nuclear-plant lesson next; another jokes about being ready to build a data center. Others pick up on the distance between learning Node.js and learning the infrastructure beneath the software.

The week's other upload brings the focus back to code. Beau's "PostgreSQL Hybrid Search Course – Keyword (BM25) + Vector Retrieval" builds a Wikipedia search engine by combining keyword matching with semantic search inside one database. It is currently drawing the most daily views of the channel's uploads, followed by the previous week's system-design course.

freeCodeCamp.org added about 100,000 subscribers over the week, although daily viewing is running below its usual level. Among nearby education channels, The Infographics Show and Johnny Harris had larger weekly viewing gains. Here, the distinctive new assignment is less about what AI can answer than what it takes to keep its machinery running.

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What viewers say

Now I can build my own data center
@tejiriamrasa3258See it on YouTube
I thought this was going to be a vlog inside a data center
@clipmania36969See it on YouTube
from nodejs course to building data center we have come a long way
@dhruvikdonga4569See it on YouTube

3 more comments

nuclear plant next, PLEASE
@89marufomio66See it on YouTube
Setting up these data centers must be last boss level difficult. So many wires, routers, racks, cooling. It must be a logistics nightmare. Glad we have talented people doing all the grunt work.
@tvbtherewillbecodeSee it on YouTube
Straight to my Watch Later playlist
@runningman78643See it on YouTube

Public comments from the video's page on YouTube