Archive for the ‘Mining Hardware’ Category

Move away Antminer Z9 Mini, Bitmain is starting to sell the “full” Antminer Z9 that will supposedly offer 40000 Sol/s for Equihash mining at 1150W of power usage with deliveries starting at the beginning of September and priced at $3319 USD (PSU is not included). For comparison the already available Antminer Z9 Mini offered just 10000 at about 250W of power usage. On the other hand there is also the Innosilicon A9 ZMaster Equihash ASIC Miner that offers 50 Ksol/s at just 620 Watts of power usage, but at three times higher price and currently out is of stock.

Bitmain is currently showing only a rendering of the new device, not an actual photo, but it seems like two slightly longer Z9 Minis stitched together (maybe an extra chip or to per board). We already know that the chips used in the Z9 Mini are overclocking pretty well, so two Z9 Minis can easily reach 30 KSol/s at maybe about 700 Watts and three overclocked units can go for as much as 45 KSol/s with just about a Kilowatt of power usage. Considering this and the fact that the device apparently only has 7 PCI-E power connectors (6 for ASIC boards and 1 for the control board) we can easily assume that Bitmain may have achieved the high power usage with less chips that are already overclocked quite a lot. If they did do just that the price of the new “more powerful” units may not be justified and you should not be expecting to see a lot of headroom for improving performance like on the Minis.

For more information about the new Bitmain Antminer Z9 40K Sol/s ASIC Miner for Equihash…

While still in pre-order stage the first 7nm ASIC miner for Bitcoin (SHA256) – the 24 THS GMO B2 miner has been sold out. The Japanese company behind the project however is apparently ready with a successor – the GMO miner B3 that will be offering variable hashrate of 24-33 THS with 1950-3417 Watts of power usage respectively at the same price of 1999 USD. The new miners will come with 180 days of warranty and the price includes a 4 kW power supply as well. GMO is already taking pre-orders for the new B3 miners and you can pay using Bitcoin, Bitcoin Cash or USD with shipping expected to start in November 2018.

The new GMO B3 ASIc miners come with the same base specifications, but there is an extra that allows the device to either automatically adjust performance or the user to optimize it so that it can reach up to 33 THS hashrate with reduced power efficiency. This feature is interesting as it will allow miners to increase performance at times when there is higher profit to be made and to reduce it when the profit is not that good. The extra performance at the same price as that of the original B2 miners does seem like an interesting upgrade, especially considering that you get an adequate power supply also included in the price.

If you are interested in learning more details about the upcoming GMO B3 ASIC miners…

RebTech is a Romanian company that you may never heard of, but they do offer some interesting GPU mining related products that you might be interested in checking out. We are mostly interested in the RebTech Blockchain Motherboard that and the RebTech Blockchain Video Card as both products are certainly interesting in their design and functionality and are clearly made with GPU miners in mind. The company also seems to be building what they call Blockchain mining servers based on these two products they offer, so you might be interested in these as well. But first let us take a look at the Blockchain motherboard and video card and why they are so interesting…

The RebTech USB-VGA AMD Radeon RX470 8GB video card may seem like a traditional RX 470 GPU, but it is not, it is designed specifically for use for GPU mining (Ethereum in particular as a focus). These GPUs do come with a built-in PCI-E extender via USB transfer cable with direct USB connector onboard instead of a traditional PCI-E slot. They use a specific mounting plane and the lack of a traditional x16 PCI-E slot on the board allows for some clever new ways of mounting the GPUs. Even though they are apparently designed to be used for mining these video cards still do feature a single HDMI video output, so that you can connect a display. Now we would love to see similar designs with more powerful AMD GPUs as well as with Nvidia GPUS…

The RebTech 8GPU-MB mining motherboard is what is more interesting here as it offers an all-in-one solution with everything you need to setup up to 8x GPU mining rig with it. The motherboard comes with AMD A6-8500 CPU with integrated GPU, 4G DDR3 RAM, 120G MSATA SSD and features 8x USB/PCI-E extenders on board. The whole thing is similar in size and in form factor to a GPU and you can apparently mount it just like another video card in your mining configuration. What makes it even more interesting is the fact that the motherboard is powered with 12V only via a single 6-pin PCI-E power connector, again just like a video card. This means that you can go with a cheaper and more efficient server-type power supply that only outputs 12V, similar to what most popular ASIC miners go along with.

Both the RebTech Blockchain Motherboard and the Blockchain Video Cards are interesting products for miners, especially for those interested into larger scale operations as the products do offer some interesting and very useful advantages. The only thing that worries us a bit here is that although the company claims to be in the mining business since 2012 their website is just two months old…


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