Fast science and technology news on April 7, the original version of Xiaomi SU7 Max has been delivered one after another.
Blogger @ Yang Changshun immediately removed the main control of the new car after picking up the car.
Let’s take a look at what the Orin X and 8295 chips look like, how PCB works, and how good it is compared with Tesla.
, and .
First of all, we can see that the two main controls of Xiaomi SU7-intelligent driving master control and engine master control (intelligent cockpit controller) are all under the co-pilot glove box, and the whole armbox needs to be completely taken apart before it can be seen.
Among them, the intelligent driving master control is equipped with a set of water-cooled heat dissipation system (higher calculation power, higher heat generation), and the main control of the car is fan air-cooled heat dissipation.
, 
, , , after removing the main control shell, you can see the real PCB.
The two main PCB chips of Xiaomi SU7 adopt perfect waterproof treatment, which can be moisture-proof, corrosion-proof, dustproof and so on, which can greatly increase the life of PCB board.
, 
, , , PCB have meticulous workmanship and adequate materials (much like the PCB of the graphics card), which is obviously better than the main control PCB of Tesla, which is not waterproof.
, 
, , the picture above shows the main control PCB of Tesla, which is not treated by three precautions, which is burned due to damp in the influent.
, 
, , intelligent driving master PCB, with two Nvidia Orin X computing chips arranged up and down.
The chip was released in 2019 and mass-produced in 2022 with a power consumption of 45W in the 7nm process.
“TA990SA-A1” is the code name of Orin X chip.
judging from the screen printing of “2347A1”, it is speculated that the chip should have been produced in 23 years and 47 weeks.
The computing power of the Orin X chip can reach 254TOPS, that is, it can be calculated 254 trillion times per second.
Xiaomi SU7 Max used two, and the math reached 508TOPS.
At present, Orin X is the most widely used high-level intelligent driving master chip.
ET7, Xiaopeng G9, Zero running C10, Zhiji L7/LS6, Polar Krypton 007 and other models all use this chip, including single, double and four.
The mainframe factory is free to choose and thrifty.
This chip can be used not only in cars, but also in power stations.
At the end of last year, the fourth generation of Xilai Power Station was released, using four Nvidia Orin X chips, claiming that the switching time was reduced by 22%.
Therefore, these two Orin X chips of Xiaomi SU7 Max can be regarded as the mainstream level in hardware.
Of course, the final effect of smart driving, in addition to hardware, mainly depends on algorithm training.
At Xiaomi’s SU7 press conference, Lei Jun also admitted that Tesla’s new version of Model 3 Huan carries the latest HW 4.
0, which is superior in calculation.
The latter has risen fivefold from HW3.
0 ‘s 144TOPS to 720TOPS.
In addition, Tesla has always adhered to the pure vision scheme, relying entirely on math and algorithms, and the full version of FSD costs an extra fee (64000 yuan).
Xiaomi SU7 Max is assisted by lidar, and smart driving (including high-speed NOA and urban NOA) is completely free.
, 
, , , this is the main control of Xiaomi SU7 Max, which is mainly driven by a Qualcomm Snapdragon 8295 chip and four 8295AU power chips.
The 8295 is a product of Qualcomm’s fourth-generation Snapdragon digital cockpit platform, and many new models are in use, which is standard.
, 
, the platform was released on January 27th, 2021, and the CPU computing power reached 230K DMIPS.
Note: DMIPS is a measure of processor performance, describing the amount of work that can handle integer operations per second.
, 230K DMIPS, which is equivalent to 2300000 * 1 million calculations per second, which is equivalent to the familiar Intel Core i5 1135 G7 performance on PC.
GPU has the computing power of 2.
9TFLOPS (32-bit) and 5.
8TFLOPS (16-bit), which is comparable to that of Nvidia’s flagship GPU 1080Ti that year.
, 
, it should be noted that the main control of Xiaomi SU7 will no longer be guaranteed after disassembly, and ordinary users must not imitate it.
On the whole, as a new force that has been building cars for only three years, the performance of PCB, the master of Xiaomi SU7, gives us a certain surprise and shows the standard that big companies should have.
The overall chip hardware belongs to the current mainstream level, later smart driving and car machine experience, mainly depends on Xiaomi’s self-developed algorithm and software and hardware training.
