All About BTC, LTC, ETH mining as well as other alternative crypto currencies
The user who has previously released an RPi OC version for Innosilicon A2 miners that did not work properly due to the fact that the official cgminer provided only accepted a few fixed operating frequencies has updated the image to version 2.0 and now it works. The new version adds support for 1000 MHz and then from 1080 MHz to 1400 MHz in 20 MHz steps and now the cgminer accepts these values due to a modification done to the A2 driver. So if you are an owner of an A2-based miner using 28nm Innosilicon Scrypt ASIC chips you might want to try the image out, we have already checked it and can confirm it works well.
Something very interesting for the people with Innosilicon A2-based Scrypt ASIC miners, a Raspberry Pi image based on the original Innosilicon web-based interface, but with much more options for setting the operating frequency of the miner. This release by a user called Emdje should be compatible with both the smaller and the large A2 Scrypt ASIC miners allowing the users to set the operating frequency of the chip boards available between 1200 MHz and 1330 MHz, in increments of 5 MHz. This allows for some fine tuning to reach better performance balancing the performance and HW error rate optimally for your own mining hardware, as the default RPi image for the A2 miners from Innisilicon limits you to either 1000 MHz or 1200 MHz setting for the frequency. And an operating frequency of more than 1200 MHz with no significant increase in the number of HW errors is easily achievable as these A2-based miners are operating very cool and can be pushed some more. And who would not wan to get some extra hashrate from the existing mining hardware…
MinerEU, Gridseed official distributor, has just informed us that Gridseed has signed an exclusive contract with Innosilicon to produce and distribute A2 Scrypt ASIC chips and miners globally. The advanced 28nm Scrypt ASIC A2 has 1.6-1.8 MHs hashrate and 10W on each chip. With a 1000KW PSU and the right cooling fans, a new A2-based miner can achieve up to 150 MHs hashrate.
The A2 chip is developed by Innosilicon’s teams based in Silicon valley and China and is the first 28nm Scrypt ASIC to hit the market. The global exclusive contract with Gridseed, the first Scrypt ASIC chip manufacture in the world, means the two most advanced ASIC producers will be able to provide better products and services for our mining community.
This new partnership will most likely mean that these new miners will be able to beat the competition that has also been working on 28nm Scrypt ASICs such as KnCMiner and Alpha Technology in terms of delivery time. We still don’t have official information about expected delivery dates, but we consider that end of May may sounds like a reasonable and optimistic date to start deliveries of first units. We’ll see how things go, but the battle on the Scrypt ASIC market is already seriously heating up.
Update: It seems that this deal with Gridseed might have not been finalized as Innosilicon has published the following updated information on their website (the link above):
Up to this point (May 5th 2014), Innosilicon has not signed any deal on official reselling or distribution rights with anyone so any announcement from an non-Innosilicon source claiming any rights on A2 is false.
Update: And the above sentence has been removed from Innosilicon’s website and has been replaced with the following:
Gridseed is one of our strategic customers and partners in virtual currency area, we share the responsibility of building a healthy environment for this innovative and exciting market place.