Maker Builds RAM From Apollo-Era Tech to Beat High Prices

Sofía García · 2026-07-05

When RAM prices skyrocket, most of us just grumble and pay up. But one maker decided to take a different route—building his own memory module using technology that dates back to the Apollo moon missions. It's a wild story that blends vintage computing, salvaged parts, and pure determination. And the result? A working USB drive powered by hand-threaded magnetic core memory. ### What Is Magnetic Core Memory? Before modern RAM chips, computers used magnetic core memory. Tiny ferrite rings were threaded with wires to store bits of data. Each ring could hold one bit—either a 1 or a 0. This was cutting-edge stuff in the 1960s. NASA used it in the Apollo Guidance Computer. But today? It's ancient history, replaced by cheap, fast silicon memory. Unless you're the maker behind this project. He decided to resurrect the technology using parts salvaged from old Russian computers. ### Why Build Your Own RAM? RAM prices have been climbing for years. The term "RAMpocalypse" isn't new, but it's become painfully real for anyone building or upgrading a PC. DDR5 modules cost a small fortune. This maker wasn't willing to accept those prices. Instead, he built a USB drive using magnetic core memory. It's slow, bulky, and holds very little data. But it works. Here's what makes the project remarkable: - He used hand-threaded ferrite cores, just like the Apollo era - The parts came from salvaged Russian computer hardware - The entire device connects via USB, making it usable with modern systems - It's a proof of concept that old tech can still have purpose ### The Build Process Creating magnetic core memory by hand is painstaking work. Each core must be threaded with wires in a precise pattern. One mistake and the whole thing fails. The maker used a mix of salvaged components and new parts. The Russian computer parts provided the cores and some of the wiring. A modern microcontroller handles the USB interface. The result is a device that stores a tiny amount of data—think kilobytes, not gigabytes. But it's fully functional. ### What This Means for Computer Enthusiasts This project isn't practical for everyday use. You won't be replacing your DDR5 with magnetic core memory anytime soon. But it's a reminder that innovation often comes from constraint. When prices get too high, creative solutions emerge. This maker didn't just complain about RAM costs. He built something new from old parts. For professionals in the computer industry, it's a fascinating case study. It shows how far we've come—and how much we take modern tech for granted. ### The Bigger Picture Magnetic core memory is slow by today's standards. Access times are measured in microseconds, not nanoseconds. Storage capacity is measured in kilobytes. But it's reliable and radiation-resistant. That's why NASA used it for Apollo. And it's why some military and aerospace systems still use it today. This project proves that old tech isn't dead. With enough skill and determination, you can make it work again. ### Final Thoughts If you're a computer professional, this story is worth your time. It's a reminder that the industry moves fast, but the past still has lessons to teach. Next time you complain about RAM prices, remember: someone out there built his own memory from scratch. And it works.