Cryptocurrency mining regularly makes headlines, often for its energy consumption. Surprisingly, most people don't know what this activity actually entails, or what equipment it requires. Today, you can buy Bitcoin with a simple smartphone, while mining requires near-industrial-scale facilities. Between these two extremes lie several levels of interaction with cryptocurrencies, each with its own technical requirements. Let's take a closer look.
Disclaimer: This article is for informational purposes only and does not constitute investment advice. Cryptocurrencies are volatile assets and carry risks. Before making any purchase or mining decisions, it is recommended that you conduct your own research or consult a professional.
What equipment is needed to buy cryptocurrencies?
Buying cryptocurrencies requires no special equipment. Any recent smartphone or computer will do, as long as it's connected to the internet. Indeed, the major exchange platforms Coinbase and Binance operate via a simple web browser or via their own mobile application.
You log in, open an account, complete identity verification, and buy your first cryptocurrencies with a deposit in euros or dollars via bank card or bank transfer. It's simple, and that's precisely what the platforms want in order to democratize cryptocurrencies.
A smartphone and computer are also sufficient when you want to buy cryptocurrencies in presale“Presale” refers to the moment when startups offer their cryptocurrency for sale to finance their project. This is an opportunity for investors to position themselves as early adopters. a promising 1000x crypto.
The idea is that by investing early, you capture most of a cryptocurrency's upside potential, allowing you to multiply your investment. Many have succeeded at this strategy in the past: for example, the Ethereum (ETH) presale in July 2014 allowed early investors to multiply their initial investment by… more than 30,000 today! At least, those who haven't sold in the meantime.
Then, you can also use your smartphone to browse among the decentralized exchangers like Uniswap and Jupiter. They also offer the option to buy cryptocurrencies, digital collectibles, and even crypto-based (or "tokenized") stock market shares. Here, it's a bit more complicated than buying on a centralized exchange platform and a pre-sale site.
Mobile app or physical device: crypto storage
Generally, after buying cryptocurrencies on a major exchange like Binance, you leave them on the platform. No physical hardware is involved, since you entrust the safekeeping of your assets to the exchange. hot wallet (an online account connected to the internet) provided by the platform.
This solution is suitable for modest amounts, but it comes with a risk: if the platform is hacked or goes bankrupt, your cryptocurrencies could disappear. This is what happened to the unfortunate customers of FTX (November 2022), a resounding bankruptcy and particularly painful.
When the sums invested become larger, it's time to consider the cold walletsPhysical devices resembling USB drives, such as those made by the French company Ledger, are available. These devices, which cost between 60 and 200 euros, store your cryptocurrencies offline, protecting them from hacking. They are only connected to the computer during transactions.
Here, the real technical requirement concerns security: a stable internet connection, up-to-date antivirus software, and above all, the activation of two-factor authentication (a code received by SMS or via an application). No need for a super-powerful machine.
What equipment is needed to mine cryptocurrencies?
Mining involves validating transactions made on a blockchain network. The “blockchain” is essentially the shared digital ledger that records all transactions. Every time someone sends Bitcoin to another person, that transaction must be verified and recorded on the blockchain.
Miners perform this verification by solving complex mathematical problems. The first to find the solution wins a cryptocurrency reward. In short, mining secures the network by preventing fraud, while simultaneously creating new units of cryptocurrency.
To mine Bitcoin, for example, you need specialized machines called ASIC (Application-Specific Integrated Circuit). These devices, designed solely for mining, cost between 3,000 and 15,000 euros depending on their power.
A modern ASIC consumes 3,000 to 3,500 watts, the equivalent of three or four air conditioners running continuously! The noise it generates is comparable to that of an industrial vacuum cleaner running constantly. Therefore, you not only need to buy the machine, but also have a suitable location and an electrical installation capable of handling this load.
Other cryptocurrencies, such as Monero (XMR) or Ravencoin (RVN), can still be mined with classic graphics cards (GPU), the kind found in gaming computers. A configuration with three or four high-end graphics cards costs between 2,000 and 5,000 euros.
But profitability remains low, or even negative, with European electricity prices. By 2025, home mining will be more of a technical passion than a profitable investment, unless you have access to free or extremely cheap electricity.
Conclusion
Cryptocurrencies promised decentralized finance accessible to all. In 2025, this promise is partially fulfilled! Buying and holding cryptocurrencies has indeed become trivial, much to the delight of yield hunters. However, participating in their creation and validation is not within everyone's reach. "Mining" has become concentrated in the hands of industrial players with considerable capital.
