We take it apart so you can see how it works.
Plain-language answers about the machines, the games and the business behind them. No hype, no insider shorthand.
From button press to pixel: the loop every game runs
Every video game runs one loop. The machine reads the controller, advances the simulated world by a sliver of time, draws the result and sends it to the screen, then starts again. At sixty frames per second, each pass has under seventeen milliseconds. Most hardware questions come down to which part of that loop is slowest; most design questions, to what a game spends its time on. The how games work hub follows the software; the gaming hardware guide follows the machine.
Input: turning a thumb into numbers
A button is a switch that closes a circuit. An analog stick is subtler: in most controllers it rests on two potentiometers, one per axis, each a small wiper sliding over a resistive track, so the stick’s position becomes a pair of voltages converted to numbers and reported continuously, as how game controllers track inputs describes. When the track wears or collects grime, the resting reading wanders off center and the character walks on its own; controller drift covers why, and why magnetic Hall-effect sticks, with no sliding contact, resist it.
Processing: the CPU decides, the GPU draws
The central processor runs the game itself: rules, physics, enemy behavior, audio, and the instructions telling the graphics processor what to draw. The GPU instead has a very large number of simple cores working in parallel, because shading millions of pixels repeats one small calculation over and over. Dedicated versus integrated graphics differ mainly in how many of those cores there are and whether they get their own fast memory. If either processor falls behind, the frame arrives late and the loop stutters, so balance matters more than any headline part; which PC parts matter most works through that trade.
Storage: feeding the loop
A game world is too large to hold in memory at once, so pieces stream in from storage as the player moves. A hard drive has to swing a read head across a spinning platter to find each piece, and developers sometimes stored the same data several times over to shorten the trip. A solid-state drive has no moving parts and finds data almost instantly. That is what an SSD changes about loading: shorter waits, and worlds designed to stream faster than a hard drive ever could.
The display and the latency chain
The screen refreshes on a fixed schedule while the game finishes frames on its own. When a new frame lands partway through a refresh, the top of the picture shows one moment and the bottom another: screen tearing. Vertical sync cures it by making the game wait, at the cost of delay; variable refresh rate makes the display wait instead. That feature, plus the bandwidth for high refresh rates at high resolution, is much of what HDMI 2.1 adds for gaming.
Resolution and frame rate compete for the same time budget, since more pixels mean more GPU work per frame. That is why frame rate often matters more than resolution in fast games, and why so many render fewer pixels and rebuild the rest from earlier frames’ motion data: upscaling. Add up controller polling, game processing, rendering, the TV’s own image processing and the time pixels take to change, and you have input lag. When comparing screens, weigh refresh rate, variable refresh support and a low-latency game mode alongside resolution, and whether the machine can feed them.
Why a console is a fixed target
Every unit of a console is identical, so developers can tune a game to one exact processor, memory and storage setup in ways a PC game, built for countless combinations of parts, cannot. Current consoles put the CPU and GPU on a single chip sharing one pool of fast memory. That fixed target is why the difference between a console generation and a mid-cycle refresh matters: a generation moves the target, a refresh adds headroom to the same one.
The hardware also changes over a console’s life: later models move the chip to newer processes that draw less power and need smaller fans. That is why consoles get quieter later on, and the core of the launch-or-revision decision. Heat sits behind many failures, and what happens when a console overheats covers throttling, shutdowns and solder joints cracked by repeated heating and cooling. A handheld runs the same loop on a battery with little room for cooling, which explains most of the difference between handheld and home consoles. Cloud gaming moves the entire loop into a data center and streams the video back, adding a network round trip to the latency chain.
How a game gets built, shipped and kept running
A game is an engine (the code that runs the loop, draws and simulates physics) plus an enormous amount of handmade content. Content is the slow part, and every piece gets reworked as the design shifts, which is why games take so long to make. When the schedule slips, studios move the date, which is why games get delayed, or push people harder, which is crunch and why it persists. No test plan covers every combination of hardware, settings and player behavior, so games launch with bugs and get patched afterward. Design, meanwhile, works in bundles of mechanics: permanent death and a freshly generated run define the roguelike, while overlapping systems that let a problem be solved several ways make the immersive sim.
Many games are no longer finished when they ship. A live service game runs partly on the publisher’s servers and keeps changing, usually funded the way free-to-play games make money: optional purchases instead of a box price. When a game’s servers shut down, part or all of it can stop working, one reason digital versus physical ownership is more than a shelf-space question. Families meet the same machinery through how age ratings work and what parental controls can do; the North American ratings board, the ESRB, lets anyone look up a rated game.
The history built into today’s platforms
Much of what feels arbitrary in modern games is inherited. Arcade machines earned money per play, so their designs pushed players to lose quickly and pay again, with lives, rising speed and high-score tables; how arcades shaped today’s games traces that lineage. The video game crash of 1983 collapsed a North American market flooded with consoles and poor games, and the rebuilt industry kept far tighter control over what reached its hardware.
Storage then shaped design. A cartridge’s chips could be read almost instantly but were expensive and small; a disc was cheap and held far more but read slowly, bringing loading screens along with recorded music and video. That is what the shift from cartridges to discs changed. The same era saw the rapid move from 2D to 3D. The save game’s evolution runs from passwords through battery-backed cartridge memory to memory cards, hard drives and the cloud, while how online multiplayer became normal covers the network side. The Strong National Museum of Play collects and exhibits much of this history.
Why old games are hard to keep playing
Older consoles were designed for CRT televisions, which drew the picture line by line with a scanning electron beam. Artists counted on the soft blending of that picture, so pixel art looks blocky on a flat panel, which must also scale the low-resolution signal to its fixed pixel grid and adds delay doing it. Light guns, which relied on the beam’s timing, stop working entirely. Why old games look wrong on a modern TV covers the rest; a CRT filter is software that recreates the old look.
Re-releases take one of three routes, set out in port vs emulation vs remaster. Emulation is software that imitates the original hardware closely enough to run the untouched game code; the hard part is reproducing the timing quirks games depended on. Some games never return, for reasons unrelated to code: expired music and brand licenses, divided rights, lost source code. Why some classics never get re-released walks through them, and why preservation is so difficult adds decaying media, dead save batteries and server-dependent games. The nonprofit Video Game History Foundation works on exactly that problem. For games on the shelf, start with caring for old cartridges and discs.
Teardown 83 · Industry & Culture
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The Archive Wall · History & Culture
The teardown is a method, not a subject.
A market crash has parts. A business model has parts. Pick a year and we will show you what it was made of.
Workbench Notes
Who writes this?
We are enthusiasts, not industry insiders — people who buy the hardware ourselves, open it on a kitchen table and write down what we find.
Nobody here has a source at a platform holder, and we would rather say plainly that we do not know something than repeat a rumour to fill a page.