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  "path": "/videos/brancheducation-why-dont-computers-just-use-one-type-of-memory/",
  "publishedAt": "2026-06-02T11:39:56.000Z",
  "site": "https://nebula.tv",
  "tags": [
    "Engineering",
    "Tech",
    "https://www.patreon.com/brancheducation",
    "https://www.branch.education",
    "https://www.facebook.com/BranchEducation/",
    "www.drilu.studio",
    "@teddytablante"
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  "textContent": "Your computer has over a dozen different memory and storage locations—from CPU registers to DRAM, SSDs and hard drives—and it needs every single one. In this video, you’ll see exactly why.\n\nWe're breaking down the entire explanation of the memory hierarchy into three parts.\n\nFirst, a visual analogy using books and libraries that finally makes the wild tradeoffs in speed, capacity, and cost click.\n\nSecond, a nanoscopic tour inside registers, SRAM cache, DRAM, 3D NAND SSDs, and spinning hard drives to see how each one physically stores bits.\n\nThird, the insane memory and storage stack powering modern AI servers, from HBM3E stacks to petabyte-scale NVMe data lakes.\n\nBy the end, you'll understand exactly how your computer—and the AI servers training the world's largest models—juggle data across every layer of the hierarchy.\n\nNotes about the content: As our example computer, we’re using a typical computer from 2026. Of course, the specs vary based on the devices and the age of your computer, but all are within the ballpark. Also, we chose to keep the units consistent when comparing the devices, which is why we focus on nanosecond access time rather than the number of clock cycles. Consistency between units, we felt, was more important to get a sense of the magnitudes of difference.\n\nTable of Contents:\n\n00:00 – Why do computers use so many different data memory & storage locations?\n\n02:06 – Why use Registers, Cache, Memory, and Storage?\n\n03:49 – Building the visual representation of data\n\n07:58 – University Lecture on the Memory Hierarchy\n\n08:25 – Cloud Storage\n\n09:09 – How do Solid State Drives Work? Storage\n\n11:52 – How do Hard Disk Drives Work? Storage\n\n13:33 – How does DRAM Work? Memory\n\n15:20 – How does Cache Work?\n\n16:14 – How do Registers Work?\n\n17:40 – Approximate Specifications\n\n18:51 – AI Memory Hierarchy\n\n19:22 – Why does AI need so much Memory and Storage?\n\n22:34 – The AI Memory Hierarchy, Micron Sponsored Segment\n\n26:42 – A Glimpse into the Memory Hierarchy\n\n26:59 – Thank you to our Patrons\n\nThis video’s title is still a work in progress- so if you have some ideas let us know!! Here are the options we thought through:\n\nHow does Data Work Inside a Computer?\n\nWhy Don’t Computers Just Use One Type of Memory? 🖥️💿🛠️\n\nA Complete Explanation of How Data Works Inside Your Computer!!\n\nWhy do Computers use 12 (or more) Data Memory & Storage Locations?\n\nWhat Exactly is the Memory Hierarchy?\n\nWe're working on more ambitious subjects like how AI works and Quantum Computers. Any contribution would greatly help make these videos. https://www.patreon.com/brancheducation\n\nBranch Education Website: https://www.branch.education\n\nBranch Education Facebook: https://www.facebook.com/BranchEducation/\n\nAnimation: Mike Radjabov, Sherdil Davronov, Muazzam Azizova, Max Botirov\n\nResearch, Script and Editing: Teddy Tablante\n\nTwitter: @teddytablante\n\nModeling: Mike Radjabov, Prakash Kakadiya\n\nVoice Over: Phil Lee\n\nSound Design by Drilu: www.drilu.studio\n\nSound Design and Mix: Luis Huesca\n\nErratum:\n\nTanenbaum, A. S., & Austin, T. (2013).  _Structured Computer Organization_ (6th ed.). Pearson Education.\n\nWikipedia contributors. “DRAM”. “Hard Drive”. “Memory Hierarchy\". “SSD” Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, Visited May 24th 2026\n\nTextbooks and Papers\n\nSee the DRAM, SSD, and HDD videos for all the references in there.\n\n\n# DRAM #SSD #Micron",
  "title": "Why Don’t Computers Just Use One Type of Memory? 🖥️💿🛠️"
}