Best Single Board Computers Under $100 — 2026 Buyer's Guide
You don't need to spend more than a Benjamin to get a capable single-board computer in 2026. The sub-$100 SBC market is more competitive than ever, with Raspberry Pi finally delivering affordable 2GB and 1GB models of the Pi 5, and a wave of RK3588-based boards pushing desktop-class performance into budget territory.
This guide covers the best single board computers under $100 that are actually in stock. No vaporware. No pre-order traps. Every board listed here ships today, and we reference real prices from ChipRadar's live database — no estimates, no rounding.
The Short Version: Which SBC Should You Buy?
| Use Case | Best Pick | Price (ChipRadar) |
|---|---|---|
| General desktop / learning | Raspberry Pi 5 4GB | $99.35 (Amazon) |
| Headless server / IoT | Raspberry Pi 5 2GB | $65.00 (PiShop.us) |
| Ultra-budget tinkering | Raspberry Pi 5 1GB | $45.00 (PiShop.us) |
| Portable / embedded projects | Raspberry Pi Zero 2 WH Kit | $53.99 (Amazon) |
| Older stable platform | Raspberry Pi 4 4GB | $100.00 (PiShop.us) |
If you want maximum performance under $100, the Raspberry Pi 5 4GB is the no-brainer at $99.35. If your budget is tighter, the 2GB model at $65 delivers the same CPU with less RAM — plenty for most headless applications.
Detailed Breakdown of Each Board
Raspberry Pi 5 4GB — $99.35
Chipset: BCM2712 (Cortex-A76, quad-core, ~2.4 GHz)
Vendor: Amazon — in stock
The Pi 5 4GB hits the sweet spot. For under $100, you get the fastest general-purpose SBC on the market with real PCIe 2.0 x1, a VideoCore VII GPU that can handle 4Kp60 dual displays, and a USB 3.0 controller that doesn't bottleneck.
What you can do with it:
- Lightweight desktop (Raspberry Pi OS, Ubuntu Mate)
- Retro gaming (RetroPie, Batocera up to PS1/N64)
- Home server (Pi-hole, Jellyfin, Samba, WireGuard)
- CNC or 3D printer controller (Klipper, Fluid)
- Low-power Kubernetes cluster node
Trade-offs:
- Active cooling strongly recommended under sustained load
- No onboard eMMC; relies on microSD or NVMe via HAT
- 4GB RAM limits heavier workloads (no serious LLMs or multiple VMs)
This is the best SBC under $100 for 95% of buyers. If you can stretch to $99.35, don't look back.
Raspberry Pi 5 2GB — $65.00
Chipset: BCM2712
Vendor: PiShop.us — in stock
Identical CPU to the 4GB model, half the RAM. For headless projects where you don't need a desktop environment, this is the value king.
Best uses:
- Network appliances (router, DNS, VPN gateway)
- Sensor data loggers
- Lightweight web servers
- Pi-hole + Unbound DNS resolver
Trade-offs:
- Running a desktop is painful — expect swapping with multiple browser tabs
- Some AI/ML inference libraries require >2GB for model loading
- No upgrade path; if you later need 4GB, you buy a new board
At $65, this is the cheapest Pi 5 model that still makes sense for productive work. The 1GB model below is more of a curiosity.
Raspberry Pi 5 1GB — $45.00
Chipset: BCM2712
Vendor: PiShop.us — in stock
The $45 Pi 5 exists to hit a price point. The CPU is the same, but with 1GB of LPDDR4X, you're severely limited. Booting a modern Linux desktop will leave you with about 200MB free. That's not enough for a browser with one tab.
Where it works:
- Single-purpose embedded systems (one sensor, one display, one program)
- Microcontroller replacement with Linux networking
- Teaching embedded Linux concepts (you learn to optimize aggressively)
Where it doesn't:
- Any web browsing
- Node-RED with more than a few flows
- Running Docker containers
Buy this only if you know exactly why you need 1GB and nothing more. Otherwise, spend the extra $20 for the 2GB.
Raspberry Pi Zero 2 WH Kit — $53.99
Chipset: BCM2710A1 (Cortex-A53, quad-core, 1.0 GHz)
Vendor: Amazon — in stock
This is a kit that includes the Pi Zero 2 W with pre-soldered headers, case, power supply, and microSD. Priced at $53.99, it's not cheap for what's essentially a 2016-era CPU, but the form factor is unique.
Best for:
- Portable RetroPie builds (Game Boy Zero shells)
- Camera streaming (PiCamera + MotionEye)
- Battery-powered sensor nodes
- USB gadget projects (keyboard/mouse emulation)
Trade-offs:
- Performance is roughly 1/5th of a Pi 5
- 512MB RAM — genuinely painful for anything beyond single-task use
- No onboard Ethernet (WiFi only, and it's 2.4 GHz b/g/n)
- Micro USB power and HDMI (miniaturized, requires adapters)
The Zero 2 W is a specialist tool. Don't buy it as a cheaper Pi 5 — it's not.
Raspberry Pi 4 4GB — $100.00
Chipset: BCM2711 (Cortex-A72, quad-core, 1.8 GHz)
Vendor: PiShop.us — in stock
At exactly $100, the Pi 4 4GB is now the same price as a Pi 5 4GB. There is no reason to buy this board in 2026 unless you have a project that specifically requires BCM2711 compatibility (some HATs and legacy OS images).
The Pi 4 runs hotter, boots slower, has worse GPU performance, and lacks PCIe. The only advantage is that its software ecosystem is fully mature — everything works.
Verdict: Skip it. Get the Pi 5 4GB for the same price. If you need Pi 4 compatibility, buy a used one for $40-50.
Price Comparison Table (ChipRadar Live Data)
| Product | RAM | Price | Vendor | Status |
|---|---|---|---|---|
| Raspberry Pi 5 4GB | 4GB | $99.35 | Amazon | in_stock |
| Raspberry Pi 5 2GB | 2GB | $65.00 | PiShop.us | in_stock |
| Raspberry Pi 5 1GB | 1GB | $45.00 | PiShop.us | in_stock |
| Raspberry Pi Zero 2 WH Kit | 512MB | $53.99 | Amazon | in_stock |
| Raspberry Pi 4 4GB | 4GB | $100.00 | PiShop.us | in_stock |
Pricing unavailable currently for: Raspberry Pi 5 8GB, Raspberry Pi 5 16GB, Raspberry Pi 4 8GB, and all NVIDIA Jetson/Beelink/Minisforum/GEEKOM products.
What About RK3588 Boards Under $100?
We get asked about this constantly. The RK3588 is an octa-core chip (4x A76 + 4x A55) that competes with Pi 5's BCM2712. Some boards like the Orange Pi 5 and Rock 5B have been advertised at sub-$100 price points in previous years.
Current status: RK3588 boards that were once under $100 have seen price increases. As of August 2026, available RK3588 SBCs start around $120-150 for 4GB models. No RK3588 board is currently in stock under $100 from the vendors we track.
If you see an RK3588 board listed under $100 elsewhere, verify it's in stock and shipping — not a pre-order or an older listing from 2024.
Buying Advice for 2026
Check real-time stock before buying. The SBC market had components shortages for three years straight (2022-2025). While supply has stabilized in 2026, some models still have lead times. ChipRadar shows live vendor stock for every board we list.
Don't over-spec your project. The Pi 5 1GB at $45 is compelling for a single-purpose embedded system. But if you're building a home server, spend the extra $20 for 2GB — you'll thank yourself later.
Factor in the accessories cost. An official Pi 5 power supply is $12. A decent 32GB microSD is $8. A case is $10. That $45 Pi 5 becomes a $65 project real quick.
Consider cluster builds. The Pi 5 2GB at $65 each makes an efficient Kubernetes or Docker Swarm node. Four of them cost $260, which is less than a single mini PC with comparable total performance.
FAQ
What's the best SBC under $100 in 2026?
The Raspberry Pi 5 4GB at $99.35 from Amazon. It hits the performance/price sweet spot with no real competition at its price point.
Can I run Windows on any of these?
No. These are ARM-based boards. Windows ARM runs on Snapdragon X Elite hardware, not SBCs. Use Raspberry Pi OS, Ubuntu, or Debian.
Is the Raspberry Pi 5 1GB worth buying?
Only if you're building a single-purpose embedded device that needs Linux networking. For anything else, get the 2GB model.
Will prices drop on RK3588 boards?
Possibly, but there's no indication of RK3588 boards returning to sub-$100 territory in 2026. Supply constraints on the Rockchip side have kept prices elevated.
Where can I see live SBC pricing?
ChipRadar.io aggregates real-time prices and stock status from Amazon, PiShop.us, DigiKey, and other major vendors. Our data is updated every few hours.
The sub-$100 SBC market in 2026 is dominated by the Raspberry Pi 5 line — and that's fine. The BCM2712 delivers solid performance, the software ecosystem is mature, and the pricing across 1GB, 2GB, and 4GB models gives you clear options at every budget level. The Pi 5 4GB at $99 takes the crown for best all-around board, while the 2GB at $65 is the best value for headless projects.
There's no need to chase RK3588 hype if your budget is under $100. The Pi 5 covers everything from embedded systems to desktop light computing. Buy accordingly.
Track 56+ SBC prices live at ChipRadar — real-time deal scores, multi-vendor comparison, and restock alerts.
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