[Bestbuy618DIY Hardware Channel]Due to various traffic accidents and bumper sticker incidents, the car recorder has almost become one of the necessary hardware products for the car family. The car recorder can not only prevent bumper stickers, but also in the event of an accident as a reference to restore the truth, which is absolutely essential car electronic equipment for the current increasingly negative and complex road conditions. So the product under consideration is Toshiba’s new M303E microSD card for car recorders, which boasts a maximum read speed of 98MB/s, 4K video support, and a maximum write speed of 65MB/s on the front of the memory card package. If the storage device’s write performance is average, it will only indicate the maximum read speed on the package, and now Toshiba’s microSD card, in the package are marked with read and write speed, it appears that Toshiba is very confident about the performance of this microSD card.
Toshiba appears to be very confident in the performance of this microSD card.
In the vehicle recorder MicroSD cards are frequently in a long-writing state, and the working environment of these microSD cards is more severe than that of conventional microSD cards due to the high and low temperature environment in the car. As a result, the stability of the Toshiba M303E microSD card is much higher than that of a conventional microSD card under long-term working conditions. For microSD cards, we are most concerned about the device’s reading speed, so we will test the read and write performance that we are most concerned about.
However, before the test, it is necessary to explain the various logo parameters on the microSD card, because reading these parameters can give the average consumer a general understanding of the microSD card’s read and write performance through the information on the package before purchasing it. C10: Sequential write speed of at least 10m/s
A1: Minimum sequential write performance of 10MB/s V30: Sequential write speed of 30m/s with 4K video capture support U3: Sequential write speed of 30m/s with UHS SD bus support
Understanding these four parameters allows you to get a rough idea of the basic information about this microSD card, whether it is the packaging or the microSD card, the wording on it represents the different performance specifications of the microSD card. We first used AS SSD Benchmark and CrystalDiskMark, two relatively intuitive and simple software for continuous read and write testing of the memory card. The recorded video files for the car recorder will first be stored in the microSD card via the in-camera cache mechanism; this transfer process is actually two “hard disk” copies of each other, so when recording video is primarily continuous writing to the memory card, memory card performance is primarily determined by continuous reading and writing. The 4K random read/write speed has little effect on actual operation, and the sustained write speed of 70MB/s is sufficient to support high-bandwidth data writing, which will be tested later for extreme writing.
Next, run ATTO Disk Benchmark, which is a simple disk transfer rate testing software that can be used to test the read and write rates of hard drives, USB flash drives, memory cards, and other removable disks. Unlike AS SSD Benchmark, it can monitor the read and write speed of storage devices for all sizes of fragmented files, and it can truly simulate the working mode of SSDs and other storage tools in daily life, thus providing an objective and realistic response to the performance of SSDs in real life, which has some reference value and significance for ordinary users. This means that the read and write performance of this microSD card for various file sizes is basically the same, and that different monitoring equipment can ensure the performance of play.
Here, too, by copying files to test, using FastCopy to copy a single file of about 7G into the microSD card, FastCopy can be learned that the 7G test file took 120 seconds to complete, with an average write speed of 60MB / s. The good news is that the gap is not large because of the test data and extreme runtime data gaps, but also because of the main control chip storage extremes.
This microSD card is positioned in the car camera, security monitoring scenarios used in the product, so here using the “360 car record” for testing, the car test recorder record resolution adjusted to 2560 * 1600 highest resolution 30fps for recording, this microSD card can be said to be a large material, recorded a minute of video, the size of only about 130MB, bit rate of 1600kb, which means that this car recorder only needs a microSD card to s Also recorded for about a minute, the resulting file size has reached 450M, far exceeding the size of the car recorder’s recording file, the average bit rate of the video has reached 60M, open the video, the video is also recorded steadily 30 pin, no sense of lag
If you really want to test the limits of the Toshiba M303E, the recorded video should reach 4K 60FPS before the storage device becomes a bottleneck, but the size of the resulting file is not a few G can store, car recorder manufacturers will not let their own devices record such high-definition files, it is no exaggeration to say that Toshiba M303E is suitable for any civilian car recorder on the market today.