Posts Tagged ‘Bitmain

Another interesting piece of information about the popular ASIC manufacturer Bitmain as apparently the company is planning to launch their first Antminer L3 Scrypt Miner. Some of you might remember that back in 2014 Bitmain was planning to launch Antminer L1 Sctypt ASIC miner, but that one never came into existence. Apparently back then the company reached a stage that allowed even without launching a product to continue working and get an even more efficient solution and here comes the L3. There is some information available about the device already, even though it is not yet officially listed on the English website of Bitmain (you can find a product page on the Chinese one).

You can find some photos and even some early performance results online from peopel that managed to get some early units apparently, including a tweet from charlie Lee who created Litecoin (LTC) about getting one of these devices. More general availability is expected sometimes in February probably because of the incoming Chinese New Year, so we are going to have to wait some more time. What is the most interesting thing about the Bitmain AntMiner L3 Scrypt ASIC miner is the efficiency that the device not only apparently promises, but also delivers – 250 MHS hashrate with just 400 Watt power usage. This makes is significantly more power efficient compared to its only competitor with a recent generation of Scrypt ASIC hardware available – Innosilicon A4 Dominator (280 MHS at 1000W). The price listed on the product page is 1.825 BTC or a little over $1600 USD at the current exchange rate. Do note that the Antminer L3 ASIC does come without a power supply, but with the power usage the device has it does not require expensive and harder to find power supply, a decent 500W PSU should do just fine.

Bitmain Antminer L3 Specifications:
– Scrypt mining hashrate: 250 MHS
– Power consumption: 400W ± 10% (at the wall, with Bitmain’s APW3-1600 PSU, 93% efficiency, 25°C ambient temperature))
– Power efficiency: 1.6J/MH ± 10% (at the wall, AC / DC efficiency of 93%, 25°C ambient temperature)
– Rated voltage: 11.6 ~ 13.0V
– Chip Type: BM1485
– Chip quantity per unit: 144 chips
– Number of boards in the whole machine: 4 pcs
– External dimensions: 230 mm (L) * 135 mm (W) * 158 mm (H)
– Machine weight (without packaging): 2.5kg
– Operating temperature: 0°C to 40°C
– Operating Humidity: 5% RH-95% RH, non-condensing
– Network connection: Ethernet
– Noise level: 60dB

Bitmain has announced a new AntMiner T9 ASIC miner that should go on sale today for $1104 USD offering 11.5 THS hashrate. The new miner is based on the previous AntMiner S9, though it comes with a bit less chips that are apparently clocked at a higher operating frequency. The new T9 is a bit cheaper, but not as efficient as the S9 as based on the official specs it consumes about 1450W for the 11.5 THS while the Batch 22 of the S9 came with 11 THS at 1078W and Batch 23 was with 14 THS for 1372W. The new T9 miner comes with just 171 BM1387 chips while the S9 was based on 189 BM1387 chips. The two fans cooling the new device are the same as on S9, so you can expect similar level of noise from the device. So in short the new AntMiner T9 does not in fact seem so attractive to miners, but with the lack of new S9 miners you might not have much of a choice…

BitMain AntMiner T9 Specifications:
– Hash Rate: 11.5TH/s. A variation of +/- 5% is expected
– Power Consumption: 1450W +7% (at the wall, with Bitmain’s APW3 PSU, 93% efficiency, 25°C ambient temperature)
– Power Efficiency: 0.126J/GH + 7% (at the wall, with Bitmain’s APW3 PSU, 93% efficiency, 25°C ambient temperature)
– Rated Voltage: 11.60 ~ 13.00V
– Chip Type: BM1387
– Chip quantity per unit: 171 chips
– Dimensions: 350mm (l) x 135mm (w) x 158mm (h)
– Cooling: Two 12038 fans. Front fan: 6000RPM, rear fan: 4300RPM
– Operating temperature: 0°C to 40°C
– Network connection: Ethernet


Bitmain is apparently setting a very ambitious goal of their new miner called AntMiner R4 and that goal is to bring back home mining of Bitcoin. What they are doing in order to get home miners’ attention is trying to make the miner more compact and less noisy while still managing to provide quite a serious hashrate rated at 8.6 THS with just about 845 W of power usage. What will make the most difference for home users however is the price of the new miner and if it is not right, then why would you bring one or even more of these home, guess we’ll know in a few days as sales start at 23:00 (GMT+8) on 29 August when we’ll probably also get an idea about the price of the device.

Bitmain AntMiner R4 Specifications:

– Miner Hash Rate: 8.6TH/s (Variation of ±5% is expected)
– Power Consumption: 845W +9% at the wall (with Bitmain APW5 PSU)
– Power Efficiency: 0.1 J/GH +9% at the wall (with Bitmain APW5 PSU)
– Noise level: 52dB (at an ambient temperature of 35°C)
– Chip quantity per unit: 126 x BM1387
– Default Frequency: 600MHz
– Rated Voltage: 11.60 ~13.00V
– Network Connection: Ethernet
– Operating Temperature: 0°C to 40°C
– Product size: 515mm (L) x 100mm (W) x 222mm (H)


One of the most interesting things that you will notice with this miner is the cooling fan it uses, Bitmain calls is “a groundbreaking custom-design fan” that is intended to reduce the noise coming from the miner. Instead of using traditional computer fans (designed for servers) that are not intended to be silent, but instead to do their job providing good cooling they have opted out for a different design for the R4’s cooling. The fan that Bitmain uses in the AntMiner R4 is apparently inspired by the fan of a silent split air conditioner, so it was designed to make less than half the noise of the standard miner fan. Furthermore the rotational speed is being automatically controlled to ensure it never creates more noise than is absolutely necessary to keep the miner cool and running, so the noise will also depend on the ambient temperature.


Bitmain will be also offering an optional custom-built PSU for further noise reduction to go along with the AntMiner R4 – the Bitmain APW5. The power supply works with both 220V and 110V (the standard in North America) input to deliver 2600W and 1300W, respectively. It has a dynamically controlled fan that runs at full speed only after heat sink temperature is 80°C. The Bitmain APW5 should start selling along with the Antmier R4 miner in a couple of days, do note that this is a 12V only power supply that is capable of delivering a very good efficiency of up to 93%. So it may be a great choice to go along with the R4, unless of course you already have some spare 1 KW or more computer power supplies sitting idle.

For more details about the upcoming release of the Bitmain AntMiner R4 Bitcoin ASIC miner…