Quelle Crypto Monnaie Miner 2021

This tag gathers articles that help you answer the question “Quelle crypto monnaie miner en 2021 ?” — which cryptocurrency to mine in 2021. Whether you are a beginner looking for the most accessible coin or an experienced miner seeking to optimise returns, the resources below cover the key options, algorithms, hardware considerations, and regional profitability factors that defined the 2021 mining landscape.

The 2021 Mining Context

2021 was a landmark year for cryptocurrency mining. Bitcoin reached all-time highs above $60,000, triggering global interest in mining. However, the year also brought a severe GPU shortage, rising network difficulties across major proof-of-work chains, and the announcement of Ethereum’s transition to proof-of-stake. Miners had to carefully evaluate hardware availability, electricity costs, and the future viability of each network. Understanding the landscape is essential to choosing the right coin.

Key Algorithms and Their Coins

To determine which cryptocurrency to mine, you need to match your hardware to a proof-of-work algorithm. The main algorithms active in 2021 were:

• SHA-256 (Bitcoin, Bitcoin Cash) – Mined almost exclusively with ASICs. Consumer GPUs are not competitive. Bitcoin's enormous hashrate makes it the most secure network but also the hardest to profit from without industrial-scale hardware.
• Ethash (Ethereum, Ethereum Classic) – The dominant GPU-mineable algorithm during 2021. Ethereum’s hashrate grew substantially, but the announcement of the Merge (transition to proof-of-stake) created uncertainty for GPU miners. Ethereum Classic remained an alternative after the Merge.
• Scrypt (Litecoin, Dogecoin) – ASIC and GPU friendly. Merged mining allows Dogecoin to be mined alongside Litecoin without extra power. Dogecoin mining experienced a resurgence in 2021 thanks to social media hype and low entry barriers.
• RandomX (Monero) – Designed to be CPU-friendly, making it one of the most accessible coins for hobbyists. It resists ASIC and GPU mining, so a standard desktop processor can still earn small amounts of XMR.
• KawPow (Ravencoin) – A GPU-mineable algorithm that gained popularity as an alternative when Ethereum’s hashrate began migrating. It offered relatively lower difficulty and a different community focus.

Each algorithm has distinct hardware requirements, energy consumption profiles, and profitability outlooks. Your choice should align with your available equipment, electricity tariff, and risk tolerance.

Factors That Influence Your Decision

Beyond the algorithm, several factors determine real-world mining profitability:

• Hashrate and network difficulty – Higher difficulty reduces the rewards per unit of hash. Network difficulty adjusts dynamically; it rose sharply for Bitcoin and Ethereum in 2021.
• Coin price and volatility – The fiat value of the mined coin directly affects your income. 2021 saw extreme price swings, which could turn a profitable operation into a loss overnight.
• Electricity cost – This is the largest ongoing expense. Miners in regions with cheap electricity (e.g., certain parts of China, the United States, Iceland) had a significant advantage.
• Hardware availability and price – The GPU shortage made purchasing cards at MSRP difficult. ASICs also sold at a premium. Consider the payback period carefully.
• Pool fees and payout structures – PPS pools offer stable but slightly lower rewards; PPLNS pools can be more volatile. Pool fees typically range from 0% to 2%.
• Cooling and maintenance – Mining rigs generate substantial heat. In warmer climates, additional cooling costs can erode profits.

The articles linked below break down these considerations for specific coins, regions, and hardware setups, giving you a practical foundation for your mining decisions.

Browse the posts in this tag to dive deeper into each topic. Use our Crypto Money Calculator to estimate your own returns, explore profit strategies in Make Profit With Crypto, learn about India-specific factors in Bitcoin Profit In India, and discover the reality of smartphone mining in Crypto Mining With Mobile.