Avalon Miner 721

The AvalonMiner 721, released in 2016, is a classic SHA-256 ASIC miner that helped define the 16nm chip era. Today, it is largely considered a legacy or collector's item in the cryptocurrency market due to its low efficiency compared to modern 2026 standards.

Product Overview & Legacy Insights

• Core Specs: It delivers a maximum hashrate of 6 TH/s with a power consumption of approximately 850W–1000W ZeusbtcCryptocompare.
• Hardware: It features 72 x A3212 16nm ASIC chips and requires a separate controller (like a Raspberry Pi) for operation GithubEbay.
• Current Status: In 2026, the device is commercially obsolete. Modern miners are approximately 10x more efficient, meaning the 721 would consume significantly more electricity than the value of the Bitcoin it mines Mineshop.

Market Trends & Pricing (2026)

• Secondary Market: The Avalon 721 is rarely found for sale as a primary mining tool. It occasionally appears in used equipment lists or collector forums for under $50–$100, often sold as a "heating" device or for hardware education.
• Modern Replacements: For users interested in the 6 TH/s power class for "solo/lottery mining," the market has shifted toward compact, quiet home devices. The Canaan Avalon Nano 3S (also 6 TH/s) is a popular 2026 alternative that consumes only 140W, making it roughly 7x more efficient than the legacy 721 AlibabaMedium.
• Industrial Shift: Commercial operations in 2026 now utilize high-output machines like the Avalon A15XP (209 TH/s) or Antminer S21 XP, which focus on achieving efficiency levels below 14 J/TH MineshopAlibaba.

For your reference, I have attached detailed sourcing files for used Avalon miners, modern home-use alternatives, and the current 2026 Canaan product lineup.