Fast Technology reported on April 7 that the founding version of Xiaomi SU7 Max has been delivered one after another. Blogger @Yang Changshun repairer removed the main control of the new car as soon as he picked up the car, let's take a look at what the Orin X and 8295 chips look like, how the PCB workmanship, and Tesla are compared to what level.
First of all, you can see that the two main controls of Xiaomi SU7 - intelligent driving main control and car machine main control (intelligent cockpit controller) are all under the co-pilot's glove box, and the entire armrest box needs to be completely disassembled to see it.
Among them, the main control of intelligent driving is equipped with a set of water cooling and heat dissipation system (higher computing power and greater calorific power), and the main control of the car machine is fan air cooling and heat dissipation.
After removing the main control shell, you can see the real PCB. The two main control PCB chips of Xiaomi SU7 are made of perfect waterproof treatment, which can be moisture-proof, corrosion-proof, dust-proof, etc., which can greatly increase the life of the PCB board.
The overall workmanship of the PCB is meticulous and the materials used are very sufficient (much like the PCB of the graphics card), which is obviously better than the Tesla main control PCB without waterproof treatment.
The picture above shows the Tesla main control PCB without three-proof treatment, which was burned due to moisture in the water.
The intelligent driving main control PCB is lined up and down with two of NVIDIA's Orin X computing power chips. The chip was released in 2019 and mass-produced in 2022, with a 7nm process and a power consumption of 45W.
"TA990SA-A1" is the code name of the Orin X chip, and judging from the silkscreen of "2347A1", it is speculated that this chip should be produced in 23 years and 47 weeks.
The Orin X chip has a computing power of up to 254 TOPS, that is, 254 trillion calculations per second. Xiaomi SU7 Max uses two, and the computing power reaches 508TOPS.
Orin X is currently the most widely used high-end intelligent driving main control chip, NIO ET7, Xpeng G9, Leap C10, Zhiji L7/LS6, ZEEKR 007 and other models all use this chip, there are single, double, and four, OEMs can choose freely, and they are thrifty.
This chip can be used not only in cars, but also in battery swap stations. At the end of last year, NIO's fourth-generation battery swap station was released, using 4 NVIDIA Orin X chips, claiming a 22% reduction in battery swap time.
Therefore, the two Orin X chips of Xiaomi SU7 Max are considered mainstream in terms of hardware. Of course, the final intelligent driving effect, in addition to the hardware, mainly depends on the algorithm tuning.
At the Xiaomi SU7 press conference, Lei Jun also admitted frankly that the latest HW 4.0 equipped with the new version of Tesla Model 3 is better in computing power. The latter has increased from 144TOPS of HW3.0 to 720TOPS, which is as much as 5 times.
In addition, Tesla has always adhered to a pure vision solution, relying entirely on computing power and algorithms, and the full version of FSD requires an additional fee (64,000 yuan). The Xiaomi SU7 Max is assisted by LiDAR, and intelligent driving (including high-speed NOA and urban NOA) is completely free.
This is the main control of the Xiaomi SU7 Max, which mainly relies on a Qualcomm Snapdragon 8295 chip and uses four 8295AU power chips to drive.
The 8295 is a product in Qualcomm's fourth-generation Snapdragon automotive digital cockpit platform, which is currently used in many new models, which is considered standard.
The platform was released on January 27, 2021, with a CPU computing power of 230K DMIPS. Note: DMIPS is a measure of processor performance that describes the number of jobs per second that can process integer operations.
230K DMIPS, which is equivalent to processing 230,000*1 million calculations per second, is equivalent to the performance of the familiar Intel Core i5 1135 G7 on the PC side.
The GPU computing power reaches 2.9TFLOPS (32-bit) and 5.8TFLOPS (16-bit), which is comparable to the performance 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 only been making cars for three years, the performance of the main control PCB workmanship materials of Xiaomi SU7 has given us a certain surprise, showing the level that a large manufacturer should have. The overall chip hardware belongs to the current mainstream level, and the later intelligent driving and car machine experience mainly depends on Xiaomi's self-developed algorithm and software and hardware tuning.
【End of this article】If you need to reprint, please be sure to indicate the source: Fast Technology