# What are Megahashes Per Second?

Megahashes per second (MH/s) is **a measure of a miner's computational power**, specifically the hash rate of a mining machine. It refers to the number of hashes that can be performed by the mining machine in one second. The hash rate is one of the most important indicators of the mining machine's performance and is used to determine the miner's ability to mine new blocks and earn rewards.

In the context of cryptocurrency mining, a hash is a **mathematical calculation that is performed by the mining machine **to try and solve a complex mathematical problem. The solution to this problem is used to verify transactions on the blockchain and add new blocks to it. The more hashes the mining machine can perform per second, the higher its chances of successfully solving the problem and earning rewards.

A miner's hash rate is an** important factor in determining the profitability** of cryptocurrency mining. The higher the hash rate, the higher the chances of successfully solving the problem and earning rewards. However, it's important to note that the hash rate of a miner's machine is not the only factor that affects profitability, as there are also other factors such as electricity costs, the difficulty of the mathematical problem, and the price of the cryptocurrency being mined.

## Simplified Example

Think of a megahashes per second like a race. Imagine that each hash is like a runner in a race and the goal is to finish the race first. If you have one runner, that's like having one hash per second. But if you have lots of runners, like 100 or even 1000, that's like having 100 or 1000 hashes per second. Having more runners makes the race faster and more efficient, and that's what a high number of megahashes per second means in cryptocurrency mining - it's faster and more efficient at verifying transactions on the blockchain.

## History of the Term "Megahashes Per Second"

The precise origins of the term "Megahashes per second" (MH/s) are not definitively documented, but it is **thought to have surfaced in the early 2010s **with the increasing popularity of decentralized ledger technology (DLT) and the ascent of cryptocurrencies. Before this era, the practice of quantifying computational power in terms of hash rates was not a commonly adopted method.

## Examples

An ASIC miner that has a hash rate of 10 MH/s. This means that the miner is capable of performing 10 million hashes per second.

A GPU miner with a hash rate of 100 MH/s. This indicates that the miner has a much higher computational power compared to the ASIC miner and can perform 100 million hashes per second.

A mining rig consisting of multiple GPUs with a combined hash rate of 1 GH/s (1000 MH/s). This mining rig has a much higher hash rate compared to individual GPUs and can perform 1 billion hashes per second, making it capable of earning larger rewards for verifying transactions on the blockchain.