hey all,
i would like to know if any information about the write speeds on the orin
It depends.
The internal EMMC has a linear transfer speed of about 100 MB/s (MBytes). Fast EMMCs can go up to 400 MB/s when using HS400 transfer mode (which Orin doesn’t support).
A fast PCIe x4 Gen4 M.2 NVMe SSD can go up to 3000 MB/s.
SATA SSDs are limited to 550 MB/s.
Really fast mechanical hard disks can go up to 200 MB/s.
These are approximate linear speeds (ballpark numbers). Real world performance is significantly lower.
because my program writes frequently on the disk (trying to capture and save 30 fps), would adding an external ssd and writing the images onto it be faster? (we bought a 970 evo plus ssd)
If (and only if) the SSD is connected directly(!) to the PCIe of the Jetson Module via all four lanes you should see a very noticable improvement. Some carrier boards use only two lanes, which cuts the maximum speed in half.
Using an USB-NVMe bridge will give worse results - don’t do this.
Remember: Proper cooling will prevent the SSD from slowing down during operation and extend its lifespan.
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we’ll attach cooling and use a gen4 pcie ssd, i will report back if any improvement has occured
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