The profitability of the Bitmain Antminer S21 Hyd (335Th) is contingent on various factors including electricity costs, Bitcoin market prices, and mining difficulty. As of the last available data, this model has a maximum hashrate of 335Th/s while consuming 5360W of power. To estimate profitability, one must consider the current Bitcoin market value, the operational cost (electricity), and potential fees associated with mining pools. Several online tools and calculators are available that can provide a more precise estimation based on real-time data. It’s important to note that cryptocurrency mining profitability is subject to fluctuation due to the volatile nature of the market. Miners should conduct regular cost-benefit analyses to ensure their operations remain economically viable.

You can purchase the Bitmain Antminer S21 Hyd (335Th) online from various reputable retailers and marketplaces. Here are some options where you can buy this mining rig:

1. ViperaTech
   • Price: CA$9,991.53
   • Delivery: 20–27 days
2. Crypto Miner Bros
   • Price: $6,149.00
   • Delivery: Free 4–7 days
3. BT-Miners
   • Price: $7,888.00
   • Delivery: $200 2–5 days
4. Minetheasic
   • Price: Information not provided
5. MineShop
   • Price: €7,370.00
   • Delivery: €90 3-day
6. ASIC Marketplace
   • Price: $5,999.00
   • Delivery: Free 4–7 days

Please note that prices and availability may vary over time. Make sure to check the product listings for the most up-to-date information. Additionally, consider factors like shipping costs, delivery times, and customer reviews when making a purchase. Always buy from reputable sources to ensure the authenticity and quality of the product.