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Lately it hasn’t been easy finding a profitable coins to mine after Ethereum (ETH) switched to PoS, but there are some new projects that are worth checking out as they are gaining user attention. Interestingly enough they are not using the Ethash mining algorithm that has been used by ETH, but instead rely on KawPoW – the same algorithm used by RavenCoin (RVN). One of these coins new coins that is doing quite well is called MeowCoin or MEWC that is lately hovering near the top spot in terms of most profitable coin to be mined with GPUs at the current market conditions according to WhattoMine for instance (most profitable compare to other cryptos, not that it may generate a lot of profit).

The according to the Whitepaper of MEWC the aim of the project is tokenizing pets on the blockchain with important information regarding the asset to be lodged and made available for all to see such as Address of owner, Medical history, Microchip number, Animal lineage, Animal pedigree papers etc. Furthermore MeowCoin can apparently also provide the framework which a global pet retail loyalty scheme could be based. Interestingly enough even part of the blockchain reward is held over by the administration of MeowCoin to provide financial donations to animal shelters.

If you are interested in mining MEWC you can try some of the larger mining pools in terms of hashrate supporting the coin already such as , Rplant Mining Pool or PapyMiner Mining Pool or the FastPool Mining Pool. MeowCoin can be traded on a few smaller crypto exchanges as well such as TradeOgre, Graviex, Exbitron, TxBit, although you should have in mind that the trading volume on most of them is not very high, there is already trading going on.

Mining on GPUs for KawPoW coins such as MEWC is possible with a number of mining software solutions such as Z-Enemy Miner, WildRig Multi, XMRig, TeamRedMiner, Bminer, Gminer, NBMiner, TT-Miner and others although our preferred choice currently is to use the latest T-Rex miner for Nvidia GPUs mining RavenCoin (RVN) and othwr KawPoW crypto coins such as MEWC. Besides MeowCoin (MEWC), you might also want to check out two more other new KawPoW crypto coins and these are KawKaw – a gaming oriented crypto and PROCYON COON COIN – another fun meme coin that you can mine.

The Nvidia System Management Interface (nvidia-smi) is a command line utility, based on top of the Nvidia Management Library (NVML), intended to aid in the management and monitoring of Nvidia GPU devices. It has a number of useful commands for mostly monitoring the status of your Nvidia GPUs, but there are some commands that can be useful for miners as well. There are two commands that we’ll be discussing here now that can be useful to help you optimize your mining performance and while here the focus is for use under Windows, the nvidia-smi tool is also available for Linux and can be used there as well. We’ll be learning how to lock the operating frequency of an Nvidia GPU to a certain fixed value as well as how to control the power limit of that particular GPU as well and how these two commands can complement each other well in order to optimize the performance and energy efficiency of a mining rig based on Nvidia GPUs.

Fixing or locking the GPU frequency to a certain level or the power limit on an Nvidia GPU with the nvidia-smi tool on Windows requires you to start a “Command Prompt” window, but make sure you do so with Administrator privileges, otherwise you will not be able to change anything as you would not have the required permissions. The nvidia-smi tool should be included in the Path, so no need to run it from a specific location, though you might want to run it from a Batch (BAT) file in order to automate it with the start of a miner for instance. Since it requires Admin privileges you cannot set the Batch file to be executed as Admin by default, but if you make a Shortcut to the BAT file you can set the Shortcut in Windows to be ran as Administrator and that would do the job.

To set the GPU clock on Nvidia GPU using the nvidia-smi tool you need to use the -lgc parameter. So, for example to set the GPU clock to 1050 MHz you would need to run nvidia-smi -lgc 1050 as on the example screenshot above. Do note that this will be the GPU clock that your Nvidia graphic adapter(s) will be running at ONLY if they are allowed to by their power limiter at the moment, but more on that in a moment.

To set the GPU Power Limit on Nvidia GPU using the nvidia-smi tool you need to use the -pl parameter. So, for example to set the GPU Power Limit to 120W you would need to run nvidia-smi -pl 120 as on the example screenshot above. When set the Power Limit is fixed regardless of other options of the GPU.

In our example above we have set the GPU clock to 1050 MHz and the Power Limit to 120W for a mining rig with 6x Nvidia RTX 3070 GPUs, but as you can see from the NBMiner screenshot here the operating frequency is lower than the set value while the Power Limit is also reported 119W instead of 120W, but small variation here is normal. Well, the thing is that at 120W of power usage as per our limit here the said GPUs are just not able to function with such high GPU clock, but if we increase the power limit a bit more the video cards will be able to operate at 1050 MHz clock without a problem. So, what you need to make sure you do is to match well both of these parameters in order to get optimal performance with optimal power usage…

If you set the power limit to let us say 150W, but the GPU clock limit is at 1050 MHz the video cards will just consume around 130-135W and not the full 150 Watts. The trick here is to first see what GPU clock you need for the optimal performance of a certain video card, like for example the RTX 3070 (depending on the make and model and operating conditions) can require somewhere between around 850 and 1050 MHz GPU clock to give you 60 MHs of Ethash mining hashrate with 120W-130W of power usage as maximum. You just need to play around with your specific hardware a bit and see what works best and then you can automate the settings for optimal performance and power usage via the batch file you use to run your mining software.

Some ideas on how to Monitor and Control Your Nvidia GPUs While Mining with nvidia-smi…

EthereumPoW (ETHW) is the name of the Proof of Work fork that continued as PoW after the original Ethereum (ETH) has switched to Proof of Stake after the so-called Merge of ETH that has happened on 15th of September. ETHW is mineable on a number of large pools already and is available for trading on some of the larger exchanges with more coming apparently as the interest, especially from miners is pretty high at the moment. The ETHW hard forking from ETH means that any address that had Ethereum coins available on the Ethereum mainnet will also have the same amount of ETHW coins on the EthereumPoW mainnet. Many of the exchanges that added support for ETHW have already credited users with coins based on their ETH holdings at the time of the fork, though not all have started trading yet.

EthereumPoW (ETHW) has a price of a little over $6 USD at the moment, though that price can fluctuate wildly at the moment. The peak price ETHW has reached was a little of over $60 USD for a brief moment soon after the hard fork, but is currently at just about 1/10 of that peak level it had according to CoinMarketCap. You can visit the official website of the EthereumPoW – The Original Ethereum Blockchain powered by Proof of Work, though we’ll try to summarize the most important things to help you get started mining ETHW if you are interested. Here you can find an ETHW Explorer and the official GitHub page with EthereumPoW code

The best thing about EthereumPoW (ETHW) is that it uses the very familiar Dagger-Hashimoto or Ethash algorithm that was used by Ethereum (ETH) supported by most mining software such as PhoenixMiner, NBMiner, T-Rex Miner, lolMiner and many others. So, if you were just mining ETH prior to the Merge, you should be able to very quickly and easily get up to speed with switching to ETHW mining. The only thing you will need is a new mining pool with support for ETHW such as f2pool.com, 2miners.com, poolin.com, woolypooly.com or nanopool.org – these are the Top 5 ETHW mining pools in terms of mining hashrate at the moment. Then you would also need to get an ETHW wallet address, if you don’t have one already, in a supporting exchange such as Kraken, Poloniex, Bittrex or one of the others that already have introduced support for EthereumPoW.

That is it you can point your mining hardware to mine the ETHW coin easily and pretty straightforward if you were already mining ETH, the only thing that remains to happen is for EthereumPoW to become profitable to be mined as currently it is the same as with other crypto coins. Mining ETHW at the moment can hardly even cover for the electricity being used with its current price and difficulty level, profitability wise it is on par with Ethereum Classic (ETC) at the moment. Though for ETC mining you have the option to increase the mining profitability by dual-mining ETC+ZIL.

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