Seeing engineers cluster around a black plastic cube that is smaller than a deck of cards while strolling through a defense electronics lab is almost comical. On a shelf, the CuBox-i appears to be something you would overlook.
However, that small cube and similar ones keep appearing in labs near the Pentagon, in drone integration shops in Huntsville, and in the back rooms of contractors discreetly retooling for the new arms race. It’s difficult to ignore the pattern.
| Field | Detail |
|---|---|
| Product Name | CuBox-i Compact ARM Computer |
| Manufacturer | SolidRun Ltd. (Israel-based, global distribution) |
| Architecture | ARM Cortex-A9 / A53 family, fanless, palm-sized |
| Typical Power Draw | ~3W idle, under 5W full load |
| Primary Use Cases | Embedded defense systems, industrial automation, drone control, secure edge computing |
| Competing Architecture | x86 (Intel/AMD) — generally higher TDP, larger footprint |
| Defense Sector Interest | Growing sharply since 2023, tied to drone warfare and edge AI workloads |
| Pentagon FY Budget Context | Roughly $962 billion U.S. defense budget for the current fiscal year |
| Industry Reference | Gateworks Industrial Single Board Computers — comparable rugged ARM SBC family |
| Form Factor | About 2 inches square, passively cooled, no moving parts |
The U.S. defense and industrial sectors used x86 silicon for decades. Large power supplies, large boards, large chips, and large air conditioning costs. When the threats appeared a certain way, that made sense. However, the recent conflict with Iran strengthened the math that was altered by the conflict in Ukraine. The old computing model does not apply to low-cost drones, swarms of them, edge sensors that must run for days on a single battery, or electronic warfare nodes that must vanish into a car’s dashboard. ARM does. Almost unintentionally, the CuBox-i became a symbol of that change.
You can tell where the wind is blowing by looking at Anduril’s recent $20 billion, ten-year contract with the US military. Palantir’s Maven platform is also widely used in anti-Iranian operations. The AI companies are the names that make headlines, but beneath them is a more subdued layer of hardware choices.
The choice of processor for the drone, kiosk, or rugged communications node must be made by someone, somewhere. ARM is becoming a more popular option. A comparable x86 embedded processor draws between 4.5 and 12 watts of power under stress, whereas a typical compact ARM board can draw less than 2.3 watts. That distinction is the whole point of a battery-operated loitering munition.
Although defense contractors seldom publicly acknowledge it, cost is also a factor. Dozens of vendors compete to produce the chips thanks to ARM’s licensing model, which maintains fair prices. No industrial application will ever use the gigabit interfaces and PCIe lanes that x86 boards frequently come with. Paying for features that they will physically tape over before shipment is how engineers I’ve spoken to at trade shows describe it, almost wearily. They just get what they need from the CuBox-i and its cousins from Gateworks, SolidRun, and a few smaller stores. Nothing more.
Some of the more senior procurement officers believe that this was inevitable. In the 1990s, the Cold War-era logic of reducing defense suppliers from 51 companies to five made sense. It no longer does. NATO members are being openly threatened by Russia. China is producing warships at a rate that the United States hasn’t seen in decades.
In light of this, Defense Secretary Pete Hegseth has indicated that the Pentagon will purchase commercial goods first, regardless of whether the bid satisfies all requirements. When you sit with that sentence alone, the supply chain map is redrawn. Suddenly, a small Taiwanese or Israeli manufacturer of ARM boards has a genuine chance.
It’s still unclear if the trend will continue. The power profile of ARM’s high-end components is beginning to resemble that of x86, and generative AI on the edge is ravenous. Additionally, the Trump administration recently labeled Anthropic, one of the AI firms most integrated into this new defense ecosystem, a “supply chain risk” due to its refusal to permit mass surveillance. Politics is a mess. Right now, the hardware isn’t.
It’s easy to read this as a tale about chips as you watch it play out. Really, it isn’t. It tells the tale of how the American defense industrial base is gradually and somewhat reluctantly learning to think small once more. It just so happens that the CuBox-i, which uses very little power and has no fans, is seated in the front of that discussion.
