A Visual Deep Dive Into How Memory Works
Abhishekcur · x · 2026-07-20
This is a redesigned blog post titled **"How Memory Actually Works"**. The author uses visualizations to explain a frequently overlooked reality: a program's speed often depends not on computational power, but on **how data is moved and how fast**. The article opens with a puzzle: two programs performing the exact same additions on the same data can exhibit a tenfold difference in execution time. This illustrates that performance disparities typically stem from memory access patterns, cache hierarchies, and data locality, rather than pure arithmetic. Aimed at general readers, the piece uses illustrations to explain everything from the intuition of "a leaking capacitor" to how data pathways dictate speed in modern CPU/GPU architectures. It is an accessible yet technically profound long read.
More from Infra
- Emad Mostaque says Kimi K3 inference costs could fall 10x to 50x soon — rohanpaul_ai · 2026-07-21
- Emad Mostaque says Kimi K3 inference costs could drop 10x to 50x as infra matures — rohanpaul_ai · 2026-07-21
- TokenPrint turns Qwen inference into a DevTools-style visual debugger — Rich-Fruit-326 · 2026-07-21
- A broken agent router burned 30.2M tokens in 3.5 hours on Claude Code — RileyRalmuto · 2026-07-21
- Huawei's Atlas 950 SuperPoD Scales to 500,000 Chips with Unified Architecture — pstAsiatech · 2026-07-21
- South Korea's exports jump 50% in early July on the AI chip boom — Polymarket · 2026-07-21