Archive for the ‘Mining Hardware’ Category

Bitmain has announced its next-generation 7nm miners – Antminer S15 and Antminer T15 and is already taking orders for the new devices with estimated shipping time for the second half of December. Both new Bitcoin ASIC miners have two different operating modes – a high-performance one for maximum hashrate and an energy saving mode that offers better energy efficiency with lower power usage and reduced hashrate. Antminer S15 is available for $1475 USD with a limit of 2 miner per user and Antminer T15 for $913 USD with a limit of 50 miners per user. The new miners do come with a built-in power supply included in the price, but be aware that apparently this PSU is only for 220V input power and also the output voltage is not the standard 12 used previously, so finding an alternative power supply may turn out to be a bit of a challenge.

The Antminer S15 high-performance mode can achieve a hash rate of 28 TH/s with a power efficiency as low as 57 J/TH (1596W); its energy-saving mode can improve power efficiency to 50 J/TH while maintaining a hash rate of 17 TH/s (850W). The Antminer T15 high-performance mode sees a hash rate of 23 TH/s and a power efficiency as low as 67 J/TH (1541W). Its energy-saving mode can improve power efficiency to 60 J/TH while maintaining a hash rate of 20 TH/s (1200W). The new Anminer ASIC miners come with a new high conversion power supply APW8 that has a non-standard 16-18V high-voltage output, so they can effectively reduce the power loss during the power conversion process, helping mining farms save on electricity costs, or so Bitmain claims as a reason to include the new power supply module as a part of the miner. The only problem is that the new power supplies are not designed to operate on 110V power grids and that can present a challenge for some regions that do operate on these.

For more information about the new Antminer S15 Bitcoin ASIC miners…
For more information about the new Antminer T15 Bitcoin ASIC miners…

There is a new more powerful ASIC miner from Baikal Miner that supports multiple algorithms for mining, the new Baikal Miner BK-G28 is a more powerful successor of the previous BK-X model that the company was selling up until recently. The new BK-G28 is almost 3 times faster in terms of performance on all supported algorithms and adds Groestl support on top of the already supported other algos. With the Baikal Miner BK-G28 you can get up to 28 GHS mining performance on X11, Quark, Qubit, Myriad-Groestl, Nist5 and Groestl with varying power consumption. The hashrate for Skein is at 14 GHS and for mining X11Ghost you can expect to get about 3.5 GHS. Baikal Miner is already taking orders for the new hardware, though they do not cite official price for the device yet.

Currently it is most interesting and profitable choice for the new BK-G28 is to be used for the Groestl algorithm, however a big number of these ASIC mines will easily reduce profitability in not time. Mining Groestl in GPUs is obviously getting depreciated, as most likely Baikal Miner will soon add support for Groestl for the owners of BK-X ASICs as well… most likely as son as they sell enough BK-G28s.

For more information about the new Baikal Miner BK-G28 muli-algorithm ASIC miner…

While we are still waiting Bitmain to release AsicBoost support for all of its Antminer S9 variations, Braiins OS Wolfram was made available from the Braiins team. This new release of the Braiins opensource OS for Bitcoin ASIC miners comes with support for all Antminer S9 variants and adds support for AsicBoost as well, it also works on DragonMint T1 (only the variant with Xilinx based control boards). Aside from AsicBoost support on S9 mining hardware, by using the Braiins OS Wolfram you also get the ability to change the clock frequency and voltage for the miners on per hashboard basis, so more tweaking options.

Braiins OS uses over (version-rolling) AsicBoost in accordance with BIP310. For Antminer S9, this is currently done using the bitstream provided by the manufacturer, but the goal is to switch to a custom open-source bitstream as soon as possible. All Antminer S9 models (S9, S9i, S9j) are supported, however, the amount of possible variations is rather high, so for this reason it is recommend to test an SD card image first on a single device and once you are confident that the firmware operates according to your expectations, you can apply factory transitional firmware images. Then you can start tweaking the voltage and frequency settings to utilize the extra power savings that you should get of about %13 thanks o the use of AsicBoost.

For more details about the new Braiins OS Wolfram for Bitcoin ASIC miners with AsicBoost support…


top