Cryptocurrencies are here to stay, and mining them is the hottest topic today. It is easy to understand the logic with the cryptocurrency prices hitting their all-time peaks in 2017. And, it is more profitable than ever to invest in cryptocurrency mining and earn coins today. While mining will give you money, getting started is not as easy as it sounds – you will need technical know-how to choose the best GPU for mining. Fortunately, I have put together a list of the top GPUs for mining alongside a guide to help you pick which one will meet your needs.
- 1 Top GPUs on the Market
- 1.1 Top-1 and Winner. AMD Radeon RX 470 – Best Budget GPU for Mining
- 1.2 Top-2. AMD Radeon RX 480 – Best GPU for Mining Multiple Coins
- 1.3 Top-3. AMD Radeon RX 580 – Best price/quality GPU for Mining
- 1.4 Top-4. AMD Radeon R9 Fury X – Best Water-Cooled GPU for Mining
- 1.5 Top-5. Nvidia GeForce GTX 1050 Ti – Best GPU FOR Mining Ethereum
- 1.6 Top-6. Nvidia GeForce GTX 1060 – Best Power Efficient GPU
- 1.7 Top-7. Nvidia GeForce GTX 1070 – Best 8GB Graphic Card for Mining
- 1.8 Top-8. Nvidia GeForce GTX 1080 – Best GPU Overall
- 1.9 Top-9. Nvidia GeForce GTX 1080 Ti – Best GPU for Overlocking
- 2 Comparison GPU for mining coins
- 3 Why Should You Mine?
- 4 Why are GPU used for Mining and not CPUs?
- 5 Mining and Mining Graphic Cards
- 6 Features to Consider When Choosing GPU for Cryptocurrency Mining
- 7 So, Which GPU Should You Pick?
- 8 What to Mine
Top GPUs on the Market
Top-1 and Winner. AMD Radeon RX 470 – Best Budget GPU for Mining
This is a full HD GPU designed for the everyday miner. While its price may seem relatively high, consider that of the powerful RX 480 options, the machine performs optimally in different conditions. This card is one of the most power efficient from AMD options. It has the latest AAA graphics with a power draw of only 120W. The cards are designed to be compact in order to fit perfectly in mini-ITX and MicroATX PC designs. This produces less heat and less noise while working perfectly with other gadgets. AMD has not produced its version of the RX 470, and as such, you will see different cards on the market from different manufacturers.
Specs and Technology
The RX 470 uses Polaris 10, the same chip in RX 480. Its use of ‘binned’ Polaris 10 chips is a common practice in the world of microelectronics. The clock speed in this unit has been slightly reduced, placing the base speed at 426 MHz, which is way lower than that of the RX 480, which is at 1120 MHz. With a boost, the RX 470 can pre-overclock at 1270 MHz.
Polaris 10 is the most important aspect of this unit with the top advantage coming from improved power efficiency. AMD has also improved the hardware to offer better color compression, for efficient rendering, and better granular overclocking control especially with WattMan software from AMD.
Green – Each RX 470 comes with a dual fan build with about nine blades on each fan. The fans are made of plastic and rotate at high speeds to keep the unit cool at all times. There is a small switch on the sides that allow you to switch between overlocked mode and the power efficient mode. Each unit has 4GB GDDR5 memory with 32 compute units. This, coupled with 2,048 stream processors, allow you to mine more coins with ease. It is recommended for ether and zcash miners.
- Offers full HD performance
- Great power efficiency
- Plenty of memory for its price
- Relatively pricey
Top-2. AMD Radeon RX 480 – Best GPU for Mining Multiple Coins
This was among the first graphic cards to hit the recommended specifications for HTC and Oculus Rift, making it a popular unit for gaming. With the advent of cryptocurrencies and mining, the performance of this GPU has really increased to offer the best. This is a full HD 1440P card, offering great performance in all mining conditions.
Specs and Technology
In terms of the physical design and performance, AMD has shifted from Graphics Core Next 3, or GCN 3, to GCN 4, or what they call Polaris. They have replaced the 28nm process with a 14nm process to allow more transistors without increasing power consumption. This means you get a better performing GPU while power use and heat remain low. This 14nm process is denser than 16nm process used in Nvidia’s GPUs, but this has not been shown to affect performance. This means tha, AMD has been successful in creating a powerful GPU to suit small budgets.
The RX 480 is a standard mid-range card with no fancy new technologies. It offers 36 compute units with 2.304 stream processors running at a clock speed of 1,120 MHz, which can be boosted up to 1,266 MHz. With all these, the unit draws 150W power.
This unit is capable of producing up to 5.8TFLOPs, Trillion Floating-Point Operations per Second, which places it among the best GPUs out there. However, TFLOPs have not been shown to influence performance in a great way.
Yellow – RX 480 has 8GB GDDR5 memory, but some cards are offered with 4GB. The 4GB models will offer about 7 gigabits per second while the 8GB offers 8 gigabits per second. This unit features asynchronous computing, which means you can assign different tasks to your GPU with different priority levels to be undertaken at the exact same time.
Each unit is offered with a single fan spinning to a good whirr while under load. The fan produces significant noise, though not the loudest in the market, but it offers great cooling. It is recommended thanks to its excellent performance.
- Great performance
- High speed and at a great price
- Relatively noisy under load
Top-3. AMD Radeon RX 580 – Best price/quality GPU for Mining
This is one of the latest mid-range cards from AMD. It allows the latest graphics at full HD, allowing you to mine different coins. This comes as a minor update to the RX 480 from AMD with a clock speed above the average. If you did not fancy the RX 480, you can update your mining rig with the 580.
Specs and Technology
The RX 580 offers 1340MHz boost clock speed. When this is paired with 8GB or 4GB of GDDR5 memory, the unit allows you to mine ethereum with great efficiency. The 4GB version offers a lower speed compared to the 8GB version. Prices for these two are also different.
Green – The unit is offered with dual fans coupled with fan stop technology. This spins the fans down to a stop when your GPU is not under load to minimize power use. The customizable LED lights on the unit are great for gaming, but not needed while mining as they consume more power.
The highlight of the RX 580 is in its high clock speeds, which allow you to mine more. The unit is a genuine upgrade from the RX 480, offering better performance. It is recommended thanks to its high speeds.
- Great HD performance
- Easily customizable
- Great price/quality ratio
- Power hog
- Cards not compact
Top-4. AMD Radeon R9 Fury X – Best Water-Cooled GPU for Mining
The R9 Fury X is the latest release from AMD. The company has stayed silent for more than a year in which Nvidia has nearly taken over. This GPU sports the signature AMD architecture, but with every component being turbo-charged for speed, performance, and power efficiency. In this unit, AMD has moved from air cooling to water based cooling. This comes in handy for miners as the system stays online 24/7.
Specs and Technology
Though the R9 Fury X is more expensive compared to other AMD GPUs, it is still offered at a great price, looking at the competition.
Each unit uses a new GPU system referred to as Fiji, which is based on the Graphics Core Next that has been part of AMD graphic cards since 2011. While AMD has changed numbers in their systems, the structure and core design has not changed – a single Graphics Command Processor is used to delegate tasks to four shader engines.
The GPU has 16 compute units each with 64 stream processors offering up to 1,024 stream processors. Minor parts of the mining GPU are similar to most other GPUs from AMD. Shader engines are offered with their own texture unit with a rasterizer while the core continues building with 28nm process. This allows fast speeds in individual tasks while ensuring that power consumption remains low.
Green -This new chip is 596 square millimeters in size and carries 8.9 billion transistors to offer high speeds in all mining conditions. Clock speeds have been bettered in the Fury X up to 1,050MHz. The bandwidth figures of this unit give it precision performance. At 512 GB/sec, the Fury X is way over its competitors such as the GTX 980 Ti, which offers 336GB/sec. The familiar GDDR5 memory has been replaced with high-bandwidth memory, HBM, for better performance. With all the improvements seen on this unit, it is highly recommended for mining different coins.
- Water based coolers keep the unit in mint condition
- Fitted with high-performance memory
- Water cooling can prove cumbersome
Top-5. Nvidia GeForce GTX 1050 Ti – Best GPU FOR Mining Ethereum
This card shows the progress that Nvidia has made in the past few years in its Pascal Graphics architecture. It is an efficient unit, acting as a full HD card and offered at a great price. It integrates swiftly into any system that needs a mining performance boost. While this unit might not wield the power of the latest GTX cards, its price-quality ratio is great.
Specs and Technology
You can use this unit in a PC with no graphic card at all as long as you have space in the case and there is a PCI-E slot on your motherboard. The Nvidia GeForce GTX 1050 Ti bases its design on the Pascal GPU design and it’s the first in the line of Nvidia GPUs. This allows the unit to support VR gameplay and enhances the speed of mining.
With this unit, you get 768 CUDA cores besides a 1760MHz base clock speed. The max boost clock goes up to 1392MHz. The system has a full 4GB GDDR5 memory and 128bit memory bus.
The 1050 Ti is built with a max thermal design power of 75W. This means there is no room for any additions, seeing that there is no PCI-E power connector that draws power from the system. You can maximize the graphics of your unit by mining different coins.
Yellow – This unit is viewed as a budget option for those who need to mine different coins. Its cooling system allows you to operate all year without downtimes. It is recommended thanks to its simplicity and performance in all mining conditions.
- Great price-performance ratio
- Handles all mining operations with ease
- Low power consumption
- Quiet operation
- Cannot be used with all PCs
Top-6. Nvidia GeForce GTX 1060 – Best Power Efficient GPU
This is another budget option from Nvidia. It is a perfect competitor for AMD’s Radeon RX 480 in terms of features and price. This GPU is designed to offer enhanced performance to match its price. Since the original GTX 1060, Nvidia has released a less powerful model with 3GB memory. This 3GB model uses the same GP106 GPU as in the original model, which allows precision performance. While the 3GB has a relatively slow clock speed, it still performs well when mining.
Specs and Technology
This unit has been fitted with GP106 chip, which is new in the Nvidia lineup. Other units from Nvidia use GP104 chips. This chip is unique in that it does not take the ‘binned’ form as other chips, allowing it to offer a completely different performance. Like other GPUs from Nvidia, the GTX 1060 is powered by Pascal architecture, which gives it the benefits of 16nm manufacturing process. With this, the unit crams billions of transistors without increasing power consumption and heat production.
GTX 1060 has 1280 CUDA cores to perform the bulk of mining operations from the basics. This unit is designed for high boost clock speed at 1.7GHz. The unique chip design, coupled with the few CUDA cores let you mine efficiently.
The original version of this unit has 6GB of GDDR5 memory. While this is lower than other units, which have up to 8GB, it still allows full HD operation. The memory allows this unit to run at 8GB/sec.
Green – According to Nvidia, this unit draws 120W power, which is way lower than other GPUs on the market. If power consumption and heat are limiting factors, this unit can be your solution. The card looks great in its die-cast aluminum highlights with a black plastic shroud. The shroud houses the fan and the cooling kit to keep you in operation for long periods. You can use this unit in extra small desktops and in your living room PC and start mining immediately.
The unit is easy to connect, offering three display port connectors, DVI port, and HDMI 2.0b. This is a great unit for those who are looking to mine ethereum and zcash coins from their rooms.
- Quiet operation with low heat production
- Low power consumption
- High boost clock speed
- More expensive compared to rivals
Top-7. Nvidia GeForce GTX 1070 – Best 8GB Graphic Card for Mining
The Nvidia GeForce GTX 1070 is a flagship version of the GTX 1080. Granted, it is built from the Pascal architecture seen on GTX 1080 and other models from Nvidia. Pascal uses a shredded down manufacturing process, which reduces chip fabrication from 28nm to 16nm. This facilitates performance without increasing power consumption. This Pascal architecture allows the GPU to hold more transistors on a small piece of silicon, reducing power draw to 150W.
Specs and Technology
With Pascal architecture, the GTX 1070 holds 1920 cores – this allows the computer to do computational heavy lifting needed for mining Ethereum and other coins on the market. This is a commendable improvement from GTX 970, which crams 1664 cores, but still lower than the 1080, which has 2560 cores.
Pascal architecture also allows asynchronous computing. This enables your GPU to perform computations while still managing the graphics. Besides, the GPU chooses the tasks to prioritize. While asynchronous computing is not such a big deal in mining, it still makes the GPU perform faster in different mining conditions.
The GTX 1070 comes with a boosted speed of 1056 MHz, which is also a great improvement from the GTX 970. Unlike the GTX 1080, the 1070 does not have the new generation and fast RAM, the GDDR5X. It is instead limited to 2-card SLI configuration. It is offered with 8GB GDDR5 memory with a 256-bit bus. This offers 256 GB/sec of memory bandwidth.
Yellow – With the GTX 1070, Nvidia is only accepting 2-way SLI, but you can get an unlock code to add up to four cards on selected benchmarking applications. In a nutshell, the 1070 is like a minor version of the high speed 1080. This unit is recommended for those who are looking for a budget-friendly GPU to mine different coins. Once you have chosen the best GPU mining coin, setup is relatively easy.
- Fantastic overclocking
- Super quiet during operation
- Power efficient
- Limited SLI capabilities
Top-8. Nvidia GeForce GTX 1080 – Best GPU Overall
Since the release of the original GTX 1080, Nvidia has slashed the price of this model, making it more affordable while ensuring the performance remains on top. Nvidia rated this as one of the most powerful consumer-level graphic cards before they released the 1080 Ti. According to Nvidia, they spent millions to bring the new architecture alive and they had to ensure that the number match on paper matched the performance of the card.
Specs and Technology
This unit saw the introduction of Pascal architecture, which is the highlight of all that is good in this unit. Pascal, like in other units, applies a smaller manufacturing process of 16 nanometers. This means each piece of silicon will have a high number of transistors to enhance performance while reducing power consumption. Heat and noise are also reduced significantly.
For those of us who are interested in mining, Pascal allows a high number of CUDA cores – these are the elements that take the bulk of computational work. GTX 1080 has 2560 cores, which is way higher than most other Nvidia GPUs. This has also seen an increase in the clock speeds topping at 1607 MHz. All these features result from a slight increase in the power draw from 165W to 180W.
Besides the processing power of this GPU, Nvidia has replaced the GDDR5 memory with a faster GDDR5X. The latter works like the RAM in a PC, but faster, allowing you to mine more coins. With 8GB memory, the unit offers a memory clock of up to 10,000MHz. This means there is more capacity for miners, especially for those mining ethereum.
The unit is fitted with a single silent fan buried deep in the case. Connection can be done through DVI port, HDMI port, or DisplayPort. This GPU allows asynchronous computing, which means it can prioritize tasks and work on multiple tasks simultaneously – this offers you the much-needed speed. You can mine practically any coin you need on this unit. It is recommended thanks to its ease of use and its speed.
- High speeds when mining
- Easy connection with silent operation
- Highly overlockable
- Relatively pricey
Top-9. Nvidia GeForce GTX 1080 Ti – Best GPU for Overlocking
The GTX 1080 Ti is one of the most expensive GPUs from Nvidia. It is the latest and the most improved graphic card of 2017, allowing users to mine fast and enjoy great returns from their investments. Nvidia designed this graphic card to compete with Titan X, a celebrated GPU for gamers and miners.
Specs and Technology
This is the seventh consumer graphic card to feature Pascal architecture with improved clock speeds and memory. While it shares some features with GTX 1080, it has a couple of unique features, making it an ideal choice for those interested in mining. These extra features allow the card to house 12 billion transistors with 3,854 CUDA cores. This translates to high speeds and better performance without affecting power consumption. It operates silently and with less heat.
The boost clock of this unit is rated at 1.6GHz overlockable up to 2.0GHz. With this unit, you get 11 GB GDDRX memory, offering clock speeds as high as 11GHz. The speed is up to 10 percent higher than the predecessor GTX 1080. Though the unit is designed to rival Titan X, it is 1 GB less – this is catered for in the high data speeds. Titan X offers 480GB/sec while GTX 1080 Ti offers 484GB/sec.
Green – The internal design of the system has been refined to offer a better power delivery and cooling system. Its blower fan design has been improved for better cooling and quietness. The unit is offered with an aluminum build that mirrors Titan X. The Founders Edition, from Nvidia, is slightly cheaper than third party cards. This unit is recommended for its high speed, ease of integration with different PCs and high memory. Looking at GPU mining comparison, this might pass as a GPU for all users.
- High speed with low downtime
- Integrates with different PCs
- Highly overlockable
- Power hog
- High price
Comparison GPU for mining coins
|GPU||Hashrate ZEC||Hashrate ETC/ETC||Power consumption||Efficiency ZCash (Sol/w)||Efficiency Ethash (MHS/W)|
|GTX 1080 Ti||620 Sol||35 MH/s||250 W||2.48||0.140|
|GTX 1080||475 Sol||28 MH/s||180 W||2.63||0.153|
|RX 580||280 Sol||26 MH/s||185 W||1.51||0.140|
|RX 570||260 Sol||25 MH/s||150 W||1.73||0.166|
|GTX 1070||435 Sol||27 MH/s||150 W||2.90||0.190|
|GTX 1060||282 Sol||20 MH/s||120 W||2.35||0/150|
|RX 480||300 Sol||29 MH/s||150 W||2.00||0.190|
|RX 470||250 Sol||24 MH/s||120 W||2.08||0.200|
|RX 460||110 Sol||11 MH/s||75 W||1.47||0.146|
|RX 560||120 Sol||12 MH/s||90 W||1.33||0.133|
|RX 550||70 Sol||10 MH/s||65 W||1.08||0.153|
|R7 370||150 Sol||—||190 W||0.78||?|
|R7 360||155 Sol||—||100 W||1.00||?|
|GTX 1050 Ti||155 Sol||13 MH/s||75 W||2.06||0.173|
|GTX 1050||135 Sol||—||60 W||2.25||?|
Why Should You Mine?
When cryptocurrencies are mentioned, the first thing that comes to my mind and the mind of many is bitcoin, the top cryptocurrency on the market. While bitcoin is popular, it is not the only cryptocurrency on the market. There are more than 100 cryptocurrencies with numerous others born almost every day. However, some are copycats of Bitcoin with very low value and adding no tangible value to the market. Some cryptos have survived and are giving Bitcoin a run for its popularity. Ether is one of these cryptocurrencies which has had enormous growth in 2017, growing by over 2000 percent.
Why should you be interested in mining? Let us assume in January of 2017 you invested $1000 in cryptocurrencies, say bitcoin. By that time, the value of 1 BTC was $960. This would have gotten you 1.042 BTC. The value of bitcoin today, in December of 2017 is way past $10,000. $15,959.36 as of December 23, 2017, to be exact. This means that your investment of $1000 would have grown to $16,629.65 within a year, and if the prevailing trends are anything to go by, the value of BTC and other cryptocurrencies will continue rising.
The above example shows a situation where you buy cryptocurrencies and hold them. But, you can even have more coins if you decide to mine them. Here, you will only need to invest in a good GPU for mining and you continue earning coins every time your GPU authenticates a transaction. With mining, you only need to invest once in the GPU mining hardware and it will continue mining for you as long as you have power and memory.
Why are GPU used for Mining and not CPUs?
The answer is simple – speed. GPUs, or graphic processing units, have been designed to do video processing and do different tasks, including mathematical computations, with great ease under specified conditions. Video processing involves a wide load of repetitive work seeing that the system is being commanded to do the same thing to a wide host of pixels on the screen. Granted, GPUs are designed heavier with a higher ability to tackle repetitive work as compared with rapidly switching between tasks as a CPU does.
GPUs have large number of ALUs, Arithmetic Logic Units, and this gives them the ability to tackle bulk mathematical computations and in large quantities compared to CPUs. All this boils down to one thing: speed.
Mining and Mining Graphic Cards
I have mentioned cryptocurrency above, but never really got into explaining what it means. While some people may be familiar with the term, others might be new in this industry.
All cryptocurrencies are common in that they rely on a decentralized network to operate and to store all transaction information. This means that all transaction information is accessible publicly and not easy to corrupt. The network is referred to as blockchain, which is a string of blocks carrying transaction information. When a person initiates a transaction, it needs to be verified for authenticity and added to a block. Verification involves complex computations performed by miners.
Miners are computer systems designed for the sole purpose of verifying transactions. The miner goes through each transaction, solves algorithms efficiently, authenticates, and adds to the block. Miners are rewarded a small amount of the mined currency. To mine, you will need a lot of processing power. CPUs were used for mining, but with the advent of chips engineered specifically to mine, GPUs took over.
These mining chips are referred to as ASICs, which stands for Application-Specific Integrated Circuits. There are also FPGAs, which stands for Field-Programmable Gate Arrays. These chips or graphic cards are able to offer better mining performance, can mine quickly, and are able to keep up with the increased complexity of mining. This is how the mining business scaled from being a business of the masses to a business of those who are willing to invest in the best mining hardware. You can be among those who are mining the right way.
Ether, on the other hand, takes advantage of the processing power of GPU. This ensures that ASICs and GFPAs do not take over and you and I can continue mining from a GPU. If you are interested in mining ether, all you need are as many video cards as possible and to put them to work to mine as much ether for you as possible. Graphic cards are not about quantity, but quality; you need to get the right card for the job.
Best cryptocurrency to mine with GPU:
Features to Consider When Choosing GPU for Cryptocurrency Mining
There are numerous aspects to consider when choosing a GPU mining hardware. I suppose at this stage you have chosen the best cryptocurrency to mine with GPU, a cryptocurrency which will give you returns.
Hash Rate or Speed
One of the most important aspects to consider is the hash rate, also referred to as the hash power. Hash rate refers to the performance of a card in solving the algorithms that make up a block. The higher the hash rate, therefore, the faster the card mines and brings you coins as rewards. The hash performance of a card is measured in hashes per second, H/s. In most cases, the mega multiplier is used, meaning a card’s performance is indicated in mega-hashes per second, MH/s, which means millions of hashes every second. Giga hash and terra hash per second, GH/s and TH/s, are also used to refer to billions and trillions of hashes per second respectively.
The bus width determines the number of memory chips you can use on a card. Since the performance of a card will be affected by the memory, the higher the bus width, the better the performance. A GPU with 256-bit bus will allow a minimum of 8 memory chips with each memory chip having a 32-bit bus width. GPUs with double the memory will have 16 memory chips. These eight additional chips at the back of your card will share the bus with the eight chips at the front side of the card.
Think of bus width as traffic lanes – the more lanes, the better the flow of traffic. If 256 bit has four traffic lanes for example, 192 bit has three, and 128 bit has two.
The right card will save your power and allow you to mine with great ease. Your miner will be running all day, and as such, running costs can get very high. This means you should skip features and fancy customizations that will increase power consumption. Nowadays, cards are designed to optimize power consumption. You can look at the reviews of a card before you buy just to make sure you have the best. Even then, seeing that mining cryptocurrencies such as ether relies on memory, choose cards with high quality memory chips for better results. This will allow you to mine more even when the power consumption is high.
In a system that runs 24/7, you cannot cut corners when it comes to cooling. To get the best performance from your graphic cards, keep them running in mint condition. Most of the systems are offered with open frame design, allowing them to cool off the air around them. Others are designed with multiple fans for air circulation.
Overclocking means configuring your GPU to run at speeds faster than what the manufacturer specifies – this is one hidden ace that can give you a boost in performance. In mining, overclocking differs from normal computer usage conditions. In normal use, for instance when gaming, a graphic card will rarely get to full load, and as such, a more aggressive overlocking will be sustainable for short periods of time. Mining, on the other hand, keeps your card running at full power 24/7. In mining, excessive overlocking might not be sustainable.
The above are some of the technicalities to consider when choosing a card. You might, however, be wondering how the numbers will bring you earnings. You can manually calculate the profits you get from a machine, but that will be complex and can take a lot of time. Fortunately for you, most GPUs have mining power indicated on them – this shows the amount of coins, in BTC or ETH or any other currency that a machine can mine. There are also online tools that help you calculate earnings by entering your machine’s hash rate, electricity price, and power consumption. These online tools do the math to show you exactly how much you are going to make from your investment. If the return on investment is low, you might need more memory or a higher hash rate to increase it.
So, Which GPU Should You Pick?
Even with all the factors considered, the most important aspect is how your card behaves once it starts mining. You can choose the correct overlocking to increase a card’s performance by up to 40 percent from its original performance, but then, you will need additional device settings. Earnings in this case might be a little lower. Most mining rigs will allow four identical graphic cards. This offers you a stable system with less problems during mining, settings, and operation. Granted, you should choose a motherboard with at least four PCI slots as these are cheaper and more available.
Even better, you should choose rigs allowing six or eight graphic cards. Certain motherboards need a higher power supply and additional cooling. This means that the returns on your investment might be lower with all these expenses if the number of cards is low. The good thing is, the number of cards can be increased gradually as long as you choose the right motherboard with the right power supply. A high number of aspects are in play when choosing a good GPU, and these aspects will affect your earnings.
What to Mine
After you know the GPU mining meaning, the next question should be what to mine. Answering this question will play a role in the GPU you choose. GPUs are not created equal. Some are designed to mine specific algorithms and, hence, specific coins better than others. For instance, NVIDIA GPUs are good options when you are mining zcash while AMD GPUs come in handy when you are mining ethereum. Granted, it is important that you know what coin you need to mine before you source your GPU. Currently, most people are mining ethereum, but soon, ethereum mining might move from proof of work, which is referred to as mining, to proof of stake. When this happens, you might need to move to mining another algorithm.
The advantage of GPUs is that they can mine any algorithm, unlike ASICs, which are specified – but they mine some coins better than others. Given, switching from one coin to the next is not challenging, and I think coins in future might use the proof of work model.
Zcash and Ethereum are mined more than other cryptocurrencies on the market. There are mining pools and online platforms that allow miners to pool the hashing power of their GPUs and automatically move to the coin with the most profit. Once you have chosen a GPU to use, ensure that you keep up with the latest updates on that coin and what is trending in the mining arena – this will help you know when to switch lanes. You can check mining graphic cards comparisons for mining different coins to see the best for your needs.
There are different aspects to consider before you start mining. First off, you need to plan and see which coin you will be mining before looking at mining hardware comparison GPU. You need to choose a unit that is easy to integrate with your existing system. With an easy-to-setup GPU, you get started with great ease and this gets you returns within a short while. Though you can look at GPU mining comparison online, note that not all GPUs will mine a given coin efficiently, so choose wisely.