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.

junkcoin-scrypt-crypto

JKC is based on Litecoin, which is safeguarded from the effects of Bitcoin ASIC mining. It has a block reward of 50 coins with the possibility of a “Super Block” worth 150 coins and a “Mega Block” worth 1000 coins.

Website
http://www.jkcoin.com/

Block Explorer / Crawler
http://block.al.tcoin.info/chain/JKCCoin

SPECIFICATIONS

  • Scrypt Algo
  • Total coins will be around 107 millions
  • 1 minutes block target
  • Difficulty retargets once per day
  • 50 coins per block.
  • Reward is halved about every two years (every 1036800 blocks).
  • Mining will be shut down after 12 years.
  • There will be 1% chance a block will yield triple of the normal coins (e.g. in the first 2 years there’s 1% chance you get 150 coins per block).
  • There is also 1/10,000 (0.01%) chance that a block will yield 1000 coins. This is valid for all 12 years of the mining.

DOWNLOADS
Windows

Source Code
at GitHub

PORTS

  • RPC Port: 9772
  • P2P Port: 9771

POOLS
http://jkc.blackgold.pro/

EXCHANGES
Bleutrade

freicoin-sha256-crypto-coin

Freicoin is a peer-to-peer (P2P) currency based on the accounting concept of a proof-of-work block chain used by Satoshi Nakamoto in the creation of Bitcoin. Unlike Bitcoin, Freicoin has a demurrage fee that ensures its circulation and bearers of the currency pay this fee automatically. This demurrage fee was proposed by Silvio Gesell to eliminate the privileged position held by money compared with capital goods, which is the underlying cause of the boom/bust business cycle and the entrenchment of the financial elite, and has been tested several times with positive results.

Website
http://freico.in//

Block Explorer / Crawler
Not Available.

SPECIFICATIONS

  • SHA-256 Algo
  • Blocks every 10 minutes
  • Coin supply* 100 million coins will be available
  • Difficulty adjustment 2016 blocks
  • Arithmetically decreasing reward
  • 4.89% annual demurrage
  • 80% block subsidy goes to foundation for the first 3 years (about 500 coins for each of first 161280 blocks, total 80m)

DOWNLOADS
Windows
Mac
Linux

Source Code
at GitHub

POOLS
https://coinotron.com/
http://pool.freico.in:9638/static/
http://p2pool.ru:9334/static/
http://frc.vpool.us/

EXCHANGES
AskCoin
Bter

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