Does your Mac have an M1 chip? If so, have you noticed that the transfer speed of your computer’s external SSD seems a little slow? According to foreign media Eclectic Light’s actual measurement, it was found that the Thunderbolt 4 ports of many M1 Mac computers do not support USB 3.1 Gen 2 and cannot provide a maximum transmission speed of 10Gb/s. It seems that the slow transmission speed is not an illusion.
Eclectic Light used Mac Studio and a 16-inch MacBook Pro for testing, transferring 160 files ranging from 2MB to 2GB to an external SSD solid state drive, and then transferring these files from the external hard drive back to the Mac computer. read and write speed.
Eclectic Light’s tests found a connection speed of 10Gb/s, a read rate of 470 MB/s, and a write rate of 480 MB/s when connected to an Intel Mac using a USB-C cable.
When connected to the Thunderbolt port on the M1 Mac using a USB-C or Thunderbolt 4 cable, the connection speed of the five ports is 5Gb/s, the read rate is between 386-406 MB/s, and the write rate is between 386-406 MB/s. Between 430-435 MB/s.
Eclectic Light concluded that since the November 2020 release of Macs with the Apple M1 chip, the Thunderbolt ports on most Macs appear to be unable to fully support the 10Gb/s SuperSpeed+ in USB 3.1 Gen 2. The only exception seems to be the front port on the Mac Studio Max with the M1 Max chip.
Eclectic Light believes that the biggest impact is on external hard drives with transfer speeds approaching 10Gb/s, especially RAID arrays and NVMe SSDs with built-in USB 3.1 Gen 2 ports, where read and write speeds may be halved.
Therefore, Eclectic Light recommends that users of USB 3.1 Gen 2 devices should connect the external hard drive to the Thunderbolt 3 hub or the USB port on the Studio Display, so that the read and write performance should be better.
Original URL:Three hee action wow
Image and source: Eclectic Light
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