{"product_id":"bitmain-antminer-s21j-xp-hydro-btc-495th-s-5940w-copie","title":"Antminer S21j XP Hydro 495TH\/s – Bitmain Hydro Bitcoin ASIC Miner | Buy Now","description":"\u003ch2\u003eBitmain Antminer S21j XP Hydro 495TH\/s – Buy Bitcoin Hydro Miner in Canada\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBitmain Antminer S21j XP Hydro\u003c\/strong\u003e is Bitmain's latest flagship water-cooled Bitcoin ASIC miner, delivering an extraordinary \u003cstrong\u003e495 TH\/s\u003c\/strong\u003e SHA-256 hashrate at just 5,940W. With a best-in-class efficiency of \u003cstrong\u003e12 J\/TH\u003c\/strong\u003e, the \u003cstrong\u003eAntminer S21j XP Hyd\u003c\/strong\u003e is among the most power-efficient Bitcoin miners ever produced. Engineered for professional mining farms and industrial data centers, this hydro-cooled miner operates silently while maintaining peak performance 24\/7.\u003c\/p\u003e\n\n\u003ch2\u003eAntminer S21j XP Hydro Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAntminer S21j XP Hyd (495TH\/s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eAlgorithm\u003c\/td\u003e\n\u003ctd\u003eSHA-256 (Bitcoin \/ BTC)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eHashrate\u003c\/td\u003e\n\u003ctd\u003e495 TH\/s (±3%)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e5,940W (±5%)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eEfficiency\u003c\/td\u003e\n\u003ctd\u003e12 J\/TH\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eHydro (Water Cooling)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e380-415V AC (Three-Phase)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e410 x 170 x 209 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e~13 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eNoise Level\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;50 dB (Near Silent)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e5°C to 40°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eMineable Coins\u003c\/td\u003e\n\u003ctd\u003eBTC, BCH, BSV (SHA-256)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eBitmain\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e365 Days Bitmain Factory Warranty\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWhy Choose the Antminer S21j XP Hydro?\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eAntminer S21j XP Hydro\u003c\/strong\u003e represents the pinnacle of Bitmain's hydro-cooled ASIC mining lineup. With \u003cstrong\u003e495 TH\/s\u003c\/strong\u003e of raw hashing power and an exceptional \u003cstrong\u003e12 J\/TH efficiency\u003c\/strong\u003e, it delivers the highest performance-per-watt ratio in the Antminer hydro series — surpassing both the S21e XP Hyd (13 J\/TH) and the S19 XP Hyd (22.7 J\/TH). The liquid cooling loop transfers heat directly from the ASIC chips, ensuring sustained peak performance with zero thermal throttling.\u003c\/p\u003e\n\u003cp\u003eKey advantages of the \u003cstrong\u003eS21j XP Hyd\u003c\/strong\u003e include:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e495 TH\/s hashrate\u003c\/strong\u003e — industry-leading SHA-256 hashing power for maximum Bitcoin mining revenue\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e12 J\/TH efficiency\u003c\/strong\u003e — the most power-efficient hydro Bitcoin miner available\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHydro cooling\u003c\/strong\u003e — near-silent operation under 50 dB with superior thermal management\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eZero thermal throttling\u003c\/strong\u003e — consistent hashrate delivery around the clock\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMulti-coin support\u003c\/strong\u003e — mine BTC, BCH, BSV and other SHA-256 cryptocurrencies\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBuy the Antminer S21j XP Hydro in Canada\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCaptainMining\u003c\/strong\u003e offers the \u003cstrong\u003eBitmain Antminer S21j XP Hydro 495TH\u003c\/strong\u003e with competitive pricing and fast Canada-wide shipping. We also provide \u003cstrong\u003eASIC hosting services\u003c\/strong\u003e at our professional Canadian mining facility with competitive hydro electricity rates — ideal for operating hydro-cooled miners that require three-phase power infrastructure. Contact us today for bulk orders or hosting arrangements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder your Antminer S21j XP Hydro today\u003c\/strong\u003e — Canada's trusted Bitcoin mining hardware supplier since 2020.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Is the Antminer S21j XP Hydro profitable in 2026?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, the Antminer S21j XP Hydro is the most profitable hydro-cooled Bitcoin miner available. With 495 TH\/s hashrate and 12 J\/TH efficiency, it delivers exceptional returns. Profitability depends on Bitcoin price, network difficulty, and your electricity cost.\"}},{\"@type\":\"Question\",\"name\":\"Does the Antminer S21j XP Hydro require water cooling?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, the S21j XP Hyd uses a hydro cooling system with three-phase power (380-415V AC). The liquid cooling loop eliminates fan noise and keeps chip temperatures stable for 24\/7 industrial mining.\"}},{\"@type\":\"Question\",\"name\":\"Can I buy the Antminer S21j XP Hydro in Canada?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, CaptainMining ships the Antminer S21j XP Hydro directly across Canada with competitive pricing, fast shipping, and optional ASIC hosting at our Canadian facility.\"}},{\"@type\":\"Question\",\"name\":\"What is the difference between S21j XP Hydro and S21e XP Hydro?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The S21j XP Hydro delivers 495 TH\/s at 12 J\/TH efficiency, while the S21e XP Hydro offers 430 TH\/s at 13 J\/TH. The S21j is more powerful and more efficient, making it the premium choice for maximum mining performance.\"}}]}\u003c\/script\u003e","brand":"CaptainMining","offers":[{"title":"Default Title","offer_id":40666869072001,"sku":null,"price":10932.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0553\/0307\/8017\/files\/3.jpg?v=1774103891","url":"https:\/\/captainmining.com\/pt\/products\/bitmain-antminer-s21j-xp-hydro-btc-495th-s-5940w-copie","provider":"CaptainMining","version":"1.0","type":"link"}