At the onset of cryptocurrency mining, CPUs were the primary way to conduct mining operations. Today, unless you’re using application-specific integrated circuits (ASICs) to mine a currency, the next best thing is GPU mining, and for many cryptocurrencies, it’s the dominant form of mining.
Here’s a breakdown of what GPU mining is and how it has started to cause real problems for the hardware industries it draws from.
Mining is essentially running software to solve complex mathematical problems in order to verify transactions on a cryptographic blockchain. Once a miner completes the math problem, the reward is a portion of cryptocurrency that’s associated what the mining activity. These verified transactions are the backbone of how a decentralized cryptocurrency is able to function as a legitimate currency.
Cryptocurrency miners use their equipment to calculate a specific number called a “nonce,” or “number only used once.” This nonce is plugged into a hash function (such as SHA-256) and calculated. Since the miner doesn’t know what the exact nonce is, multiple calculations have to be done in parallel to get the right number quickly. This is where GPUs come into play.
GPUs are specifically designed to render 3D graphics and shapes. This requires complex mathematical calculations that need to be done in parallel. For example, if you’re playing Call of Duty Warzone, your computer or console’s GPU has to not only render the entire game world (including shading, lighting, and shadows), but also the character models, guns, bullets, and game physics all at the same time. This requires the ability to compute massive amounts of calculations all at once, and it’s something graphics cards are very good at.
The same applies to GPU mining, where the many thousands of parallel processing cores in modern GPUs make them great at brute forcing the complex math problems needed to calculate mining hashes and ultimately earn their miners some cryptocurrency.
While you can technically still
An Nvidia RTX 3090 Founders Edition has a hashing rate of 150 million hashes per second (150MHps) and costs anywhere from $1,500 to $3,000. A popular ASIC like the Bitmain Antminer T17+originally cost a little over $800 and has a hashing rate of 64 trillion hashes per second (THps). It does consume a lot more power than an RTX 3090, around 10 times as much, but with its much greater hashing rate, it is a far superior piece of hardware for
That said, other cryptocurrencies can still provide a valuable profit for GPU miners, including Monero, Ripple (XRP), and Dogecoin. A good way to determine what cryptocurrency to mine is to use a mining calculator. This typically allows you to input the type of cryptocurrency you want to mine, the mining hardware you’re using or the hashing rate, and the amount of power you’re using. From there, you’re able to see how much you’ll be able to make.
One of the more popular ways to mine solo is through software like NiceHash. This allows you to rent your mining hardware out for others to mine for alt-currencies. You’re sent the profits in the form of Bitcoin. The process of setting up NiceHash on your computer is pretty simple and is perfect for those who don’t want to mess with using a command line.
That said, it may be worth looking to either join a mining pool or utilizing cloud mining. A mining pool combines the hardware capabilities of multiple miners to increase their computational power. Cloud mining may be a decent option for those who don’t have the money to invest in their own hardware (especially these days). With cloud mining, you rent mining hardware from companies like HashFlare to do the heavy lifting for you. You are then paid for your investment with Bitcoin.
There was a massive crypto boom starting around December 2020, when the price of Bitcoin and Ehereum jumped dramatically. This led crypto miners to quickly snap up graphics cards, accounting for 25% of all GPU sales. Unfortunately, this has contributed to the current GPU shortage and led Nvidia to limit the hash rate of newer 30-series cards.
Despite the massive drawbacks to
Additionally, if crypto prices crash, that reduces the profitability of mining, which also reduces the demand for graphics cards and a big sell-off of mining GPUs that have lost profitability, which can lead to a glut of GPUs on the second-hand market, crashing prices there in turn.
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