According to CNBC, assuming conservative estimates based on a gross profit margin of 75% and an operating profit margin of 65%, Bernstein stated that Bitland’s operating profit in 2017 will be between US$3 billion and US$4 billion. (Roadside News: If it counts Bitcoin paid sales, profit may picture 40 billion
However, Bitcontinent told the media that Bernstein's prediction was incorrect and stated that in 2017, operating income was about 2.5 billion US dollars (about 15.9 billion yuan). Even so, Bitland has become a wealth empire that cannot be ignored.
Without commenting on whether the mainland China and the media are just right or wrong, we have only one thing in the core to know what chips it uses.
Searched the entire network, did not find details to the chip level dismantling report. With his hands full of food and clothing, he went to the next door to buy the S9's most popular ant mining machine S9, which was demolition. Now, we would like to take a look at the most detailed bit-contaminated mining machine dismantling. The report includes: the most complete dismantling of the high-definition maps, BOM tables for each board, dismantling analysis reports, cost accounting, and mining revenue calculations.
1. The most complete resolution of the full HD
The ant mining machine S9 sold out on the official website
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Recently, the price of coins fell, and miners also fell. Yesterday, the domestic market price was already around 14,000 yuan (with official electricity). Two weeks ago, the price of HK without official power had already fallen to 13800 HKD, and the price of the futures of the official website of Bitcontin was already high. Hang upside down...
Ant mining machine S9 is mainly composed of: control board + force plate + power
Ant mining machine S9 control board
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Ant mining machine S9 control board dismantling
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Ant Mining Machine S9 Control Board BOM
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Ant mining machine S9 force board
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Below 3 red and white lines are 3 blocks, up to 9 blocks
Ant mining machine S9 force board positive
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The dense heat sink below is the ASIC chip that allows Bitland to quickly become the second largest chip design company in the country. Each power board carries 63 ASIC chips.
Ant mining machine S9 backboard
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The heat sink on the back and the height from the front face to the material are different and have special treatment
Remove the heat sink after the force plate and ASIC chip
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After we have removed all the heat sinks, the ASIC chip fully shows
Near point
Ant mining machine S9 force board BOM table
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Bit Continental S9 official power supply
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Bit Continental S9 official power disassemble
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Ant miner S9 power supply board BOM table
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2. Dismantling analysis report
The local control board uses Xilinx's latest Zynq-7000 All Programmable SoC platform based on the 28nm process flow. Zynq-7010 is selected as the processor to tightly integrate the ARM processor and FPGA architecture. This unit has dual-core ARM Cortex-A9 MPCore (667M The high-performance, low-power features of the machine are well suited to the needs of the machine. The following is a functional block diagram of the machine control board:
From the above block diagram, we can see that the main control board is equipped with serial ports, network ports, TF card and other interfaces to support the output expansion (cumulative can be connected to 9 pieces of forceboard).
Design advantages:
From the BOM list and the PCBA real thing, we can see that the control loop design has a detailed consideration:
In the control circuit circuit design process, the function expansion of the product is taken into consideration. This control board can support the drive of 9 digital force boards.
The power board chips use independent power supply, and each chip uses discrete heat sinks for heat dissipation.
The material package used in the design is relatively general and has no abnormal parts. The quality of the material brand is stable, and the control board power supply DC-DC chip adopts the TI chip. In the DDR Power loop design, TI's industrial-grade product TPS51200 is used to match the VTT, which better guarantees the signal quality.
The movement board connector adopts a lockable socket, which can prevent loosening of the cable during the transportation/use of the machine.
When the PCB LAYOUT of the complete machine, it is better to follow the design rules: Mark components are not allowed to be placed within 5mm (refer to the following physical diagram 1 red); SMT components are placed more regular, no special angle, SMT production and manufacturing efficiency; The ETH/DDR and other circuits have been designed with impedance matching to ensure signal integrity. The Power/GND network reference layer is relatively complete; the functional chip layout is reasonable, the PCB shape is square, and the utilization rate is high.
Insufficient design:
The safety clearance is not guaranteed when the power supply board partially loops PCB LAYOUT.
TF card holder and S2 button do not maintain normal spacing, which is not conducive to DIP plug manufacturing and after-sales maintenance.
The control board NAND FLASH body and its power supply chip trace far, through the middle of the ETH and SOC traces, from the design rules of view close to the FLASH placement is more appropriate (refer to the physical map 1 yellow illustration).
PCB LAYOUT did not add DIP flow direction indication, ETH socket, fan socket FAN1~FAN6 did not add silk screen printing, wave soldering is easy to connect tin (refer to the following physical map 2 red signal)
PCBA cost is higher. For chip selection, TI DC-DC products can use MPS or Taiwan GMT series to perform cost down.
3. Cost accounting
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The machines are disassembled and the cost is estimated
The RMB 4000~5000 looks like a pre-sale price of 15,000 yuan!
Pre-sale price! What a wonderful cash flow 
The main cost is on 189 ASIC chips
If you own R & D, the cost of tape is between 10 million and 15 million US dollars
If you copy it, at least it will be $1.5 million.
And after copying, we must also ensure that people's homeland is not upgraded!
4. Analysis of mining earnings
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According to the current currency price, machine price, computing power
Calculate the electricity fee by 5 hairs, dig for 10 months
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