The Memory Shortage: Why RAM Prices Doubled
A common memory chip cost about twelve dollars in November 2025. By late September 2026 it cost about forty-six dollars, and the machines built around it - phones, PCs, cars - are getting dearer as a direct result.
This explains why. First, what memory actually is: how a DRAM cell holds a bit as a trace of electrical charge, how a NAND cell holds one without power, and how both combine into the module inside every computer. Then who makes it - Samsung, SK Hynix and Micron, nearly the whole world market between three companies - and the decades of price crashes that thinned the field down to those three.
Then the technology at the centre of the shortage: high-bandwidth memory, HBM, the stacked memory built to sit beside an AI accelerator chip. HBM is a genuine engineering achievement, and it is also, by Micron's own account, about three times as expensive in wafer capacity as ordinary DDR5 memory for the same number of bits - so every wafer a factory gives to HBM is a wafer of ordinary RAM that does not get made. Nvidia and the major cloud computing companies have locked up years of that supply in long-term agreements, which is why device makers are left competing for what is left.
Then who pays: IDC's own 2026 forecasts, smartphone shipments down 16.7% and PC shipments down 11.3%, and the older DDR4 chip - still built into cars and appliances - caught in the same squeeze. Then the new fabs under construction at SK Hynix, Samsung and Micron, and why a fab takes two to three years from its first working cleanroom to meaningful output. And finally, the industry's own history of boom followed by crash - 1988, 2008, 2019, 2023 - and the real risk that today's shortage could flip into tomorrow's glut.
The finished-memory inventory figure used here is an analyst's estimate, from KB Securities, named as such rather than presented as a disclosure from either memory maker.
Educational documentary. Not financial or investment advice.
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Photo credits (Wikimedia Commons)
- Samsung Electronics Pyeongtaek Campus semiconductor plant: Office of the President of the United States, Public domain - https://commons.wikimedia.org/wiki/File%3APresident_Biden_and_Yoon_Suk-yeol_at_the_Samsung_Electronics_Pyeongtaek_Campus.jpg
- Samsung Electronics Pyeongtaek Campus, inside the fab: Office of the President of the United States, Public domain - https://commons.wikimedia.org/wiki/File%3APresident_Biden_visited_the_Samsung_Electronics_Pyeongtaek_Campus_%281%29.jpg
- HBM stack with logic die on AMD Vega 10 (photo): Fritzchens Fritz, CC0 - https://commons.wikimedia.org/wiki/File%3AAMD%4014nm%40GCN_5th_gen%40Vega10%40Radeon_RX_Vega_64%40ES-Sample%40_Stack-DSC01160-DSC01176_-_ZS-retouched.jpg
- HBM stack and GPU interposer comparison: Fritzchens Fritz, CC0 - https://commons.wikimedia.org/wiki/File%3AAMD%4014nm%40GCN_5th_gen%40Vega10%40Radeon_RX_Vega_64%40ES-Sample%40_DSCx5_Interposer_HBM_comparison.jpg
- HBM DRAM die, close-up photo: FritzchensFritz, CC0 - https://commons.wikimedia.org/wiki/File%3AAMD%4014nm%40GCN_5th_gen%40Vega10%40Radeon_RX_Vega_64%40HBM_DRAM_Die%40_Stack-DSC08838-DSC08973_-_ZS-retouched.jpg
- Jensen Huang, Nvidia CEO, CES 2025: Pronoia, CC0 - https://commons.wikimedia.org/wiki/File%3AJensen_Huang_-_RTX_5070_Laptop_-_Nvidia_Keynote_-_CES_2025_Las_Vegas.jpg
- Data centre server rack (technician at NERSC): Derrick Coetzee from Berkeley, CA, USA, CC0 - https://commons.wikimedia.org/wiki/File%3ATechnician_with_laptop_working_on_server_rack_at_NERSC.jpg
Primary sources
- TrendForce, 'Memory Spot Price Update' releases, 12 Nov 2025 through 24 Sep 2026 - the DDR4 1Gx8 3200MT/s spot-price series ($12.18 to $46.11).
- TrendForce, 'Rapid Contract Price Surge Drives 1Q26 DRAM Industry Up 81% QoQ', 1 Jun 2026 - the 93-98% QoQ contract-price rise, $97bn industry revenue and the Samsung/SK Hynix/Micron revenue split.
- TrendForce, 'Long-Term Agreements Cap Price Increases; Server DRAM Contract Prices Expected to Rise 13-18% QoQ in 3Q26', 9 Jul 2026.
- TrendForce, 'AI Reportedly to Consume 20% of Global DRAM Wafer Capacity in 2026', 26 Dec 2025, and 2026 follow-ups - HBM's 18/22/30% share of top-three wafer input and 8/9/13% share of bit output, 2025-2027.
- Digitimes, 'HBM4 squeezes DRAM supply as Samsung, SK Hynix inventories fall below 10 days', 7 Sep 2026; Tech Times, 'Memory Runs Dry', 7 Sep 2026; Seoul Economic Daily, 7 Sep 2026 - the KB Securities analyst estimate and Kim Dong-won's quoted remarks.
- Micron Technology, remarks at Hot Chips 2026 (Aug 2026), as reported by partgenie.ai and MLQ News - HBM's roughly 3x wafer capacity per bit against DDR5.
- IDC, 'Smartphone Shipments Set for Record 16.7% Drop in 2026', 26 Aug 2026.
- IDC, 'PC Market Enters Volatile Territory as Memory Shortage Persists Through 2027', 2 Jun 2026 - PC shipments down 11.3% in 2026.
- TrendForce and The Elec/Korea Times reporting, 2026 - SK Hynix M15X and Yongin fab timelines, Samsung P5 timeline.
- JEDEC Solid State Technology Association, HBM4 standard JESD270-4, Apr 2025.
- U.S. Congressional Office of Technology Assessment report on the DRAM industry (1990) and general industry-history accounts - Japan's ~90% DRAM share in 1988.
Not regulated financial advice.