Posts Tagged ‘bitcoin asic

bitmain-antminer-s1-200-ghs-overclock

The Bitmain AntMiner S1 Bitcoin ASIC miners are shipped at 180 GH/s default hashrate and they do support easy overclocking to about 200GH/s or a little over by increasing the operating frequency of the chips that is set at 350 MHz by default. Increasing the frequency to 400 MHs seems to be the most common solution to overclock your AntMiner S1 in order to get about 200GH/s hashrate, however that leads to an increase in the number of HW errors that you are getting. Now, it is completely normal to get some HW errors for an ASIC, especially overclocked one, but the percentage value should be fairly low if everything is normal.

When you login to the Bitmain AntMiner S1 web interface and open the Miner Status page you have a field called HW, this field may show a high value, but in order to calculate the actual percent of the HW errors you need to use a special formula and not directly compare the number in the Accepted and HW fields as they may show similar numbers getting you to think that you are getting way too many errors when that is not the case.


AntMiner S1 HW Error Calculation Formula:

HW / (diffA + diffR + HW) * 100


By using the formula above we can calculate that our miner has:

1937 / 1747537 * 100 = 0.11% HW Error Rate

0.11% is a very acceptable HW Error percentage for a Bitmain AntMiner S1 ASIC overclocked to provide about 200 GH/s hashrate. That is however the case with our settings using 393 MHz overclock frequency of the chips with an average of 201.55 GH/s hashrate. If overclocking to 400 MHz we are getting a little bit of a GH/s increase, however the HW Error rate also goes from 0.11% to a little more than 1%, so no point pushing the clock of the chips to 400 MHz in our opinion.

In order to overclock your Bitmain AntMiner S1 ASIC to provide 200 GH/s and low HW Errors rate with our settings you need to follow the steps below:
– Login with SSH to your AntMiner S1 ASIC using the IP and username/password you’ve set it to use.
– Type “cd /etc/config” (without the quotes) in order to get to the folder where the config file is located on the miner.
– Type “vi asic-freq” (without the quotes) to edit the config file, comment the currently set options by placing # in front of them and add the following lines or directly replace the values with the following ones:

option ‘freq_value’ ‘5f05’
option ‘chip_freq’ ‘393.75’
option ‘timeout’ ’36’

– Save the changes you have made and type “reboot” (without the quotes) to restart the miner, so that it can apply the new settings and start mining at 200 GH/s with the overclock settings you’ve set.

cexio-ghs-price-drop

If you were considering of trying out Bitcoin Cloud Mining, then now is your chance to get a better price per GHS at CEX.IO as currently there is a slight drop to below 0.0440 BTC per GHS as previously the exchange rate was over 0.0460 BTX per GHS. Buying cloud mining hashrate for Bitcoins at a lower price gives you a better chance to sell it later on with profit, besides the coins that the hasrate you’ve got has mined for you meanwhile. So it is a win-win situation – both profit from cloud mining Bitcoins and profit if/when you decide to sell your hashrate later. The good thing about Bitcoin Cloud Mining is that it is easy to get into it and requires no efforts on your side to setup, monitor and support any hardware – everything is automatically done for you and you just get the mined Bitcoins. And that continues for life or until you decide to sell your hashrate to another user and make some extra profit selling it at a higher price than you bought it.

For more information about the cloud service and to try Bitcoin Cloud Mining at CEX.IO…

bitcoin-mining-calculator-quick

Have you wondered what profit can you expect in the short term from a Bitcoin ASIC miner should you decide to invest now in one or if you just got the mining hardware? This is usually not an easy task and there are quite a few bitcoin mining calculators out there to help you in the process. If you need a quick and simple one to give you a quick idea how much you will get from a given hashrate by the end of this difficulty and in the next one, then you might want to check out this tool. In the example above we are calculating the profit we can expect from a 100 GH/s Bitcoin ASIC miner and you can see the results above. You can experiment and try with different values, what you should have in mind that the average difficulty increase is currently about 30% per cycle. Also note that the calculator takes into account the current Bitcoin exchange value and also does not calculator any costs fr electricity, this is something that you need to consider yourself based on the power consumption of your mining hardware as well as on the price of electricity per kW/h.

To try the quick and simple Bitcoin Mining Calculator shown in the example above…


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