Hash rate
Considering the complexities involved in mining Bitcoin, it is imperative to invest in the right hardware. There are several characteristics to consider when choosing the most suitable equipment or tools for you, and one of them is hashrate.

Hashrate is the number of calculations your hardware can perform every second. This is a very important parameter for selecting suitable equipment, as a higher hash rate will obviously increase your chances of solving math calculation problems, closing blocks and collecting your rewards.

What miners are looking for is a specific specification of the hash function output. In the case of a hash function, the same input will always produce the same output, but it is designed to be unpredictable. So, the best way to find a particular output is to try to enter as many random inputs as possible. In addition, mining is bound to be very competitive, so to collect rewards, miners need to be able to get through these random inputs as quickly as possible. That’s why choosing hardware with a higher hash rate is so important for mining.

The hash rate is measured in megahash per second (MH/second), gigahash per second (GH/second) and terahash per second (TH/second). Hardware hash rates specifically designed for mining Bitcoin can range from 336 MH/s to 14,000,000 MH/s.

Energy consumption
Bitcoin mining hardware is an investment, and so there are a few related things to think about. The more powerful your hardware, the more electricity it will require. Before making a purchase, you need to consider the power consumption of your desired hardware and find out how expensive your next utility bill will be. You don’t want to spend all your money on electricity to mine coins that aren’t even worth what you are paying for.

You can use the hash rate and energy consumption figures to find out how much hash you will get for each watt of electricity used by your hardware. To do this, you just need to divide the number of hashes by the number of watts. For example, if your hardware hash rate is 4,500 MH/s and requires 32 watts of power, you will get 140,625 MH/s per watt. You can use an online calculator or just check your utility bill to see how much it will cost you in cash.

In some cases, you will be using your computer to run mining hardware. Obviously, your computer will have its own power consumption on top of any mining hardware, so you will need to factor that into your calculations.

Source: cointelegraph