Black Magic Speed test. Samsung USB Bar

[dak46cmai]

Sorry, no idea, I don't use encryption.



Definitely not, FAT32 is an old format with file size limitations used primarily on smaller flash drives and SD cards. Unfortunately, some things like video cameras may still use it, but you definitely would not want FAT32 on large SSD. I think it will be pre-formatted as Windows ExFAT, which is also readable by a Mac but not what you want to use.

You would use the Erase button in Disk Utility and choose the format from the dropdown menu. Have not looked at the link above, but if it comes from Bombich then they know what they are talking about.

Many thks again..My mistake, I meant ex fat.
Anyway, I look forward to it arriving tomorrow and will follow your set up steps and the link from Bombich.

Thks to all of you who have given me the time and answers to my queries.

It is very much appreciated and I'm so glad that I joined this very helpful forum😁🙏

 

[gilby101]

Still learning about the different speeds between usb A and usb type c.

The big problem is getting your head around the difference between physical connector (what it looks like) and protocol between devices (speed, capability, etc.). USB-A and USB-C are physical connector types. USB 1, 2, 3 (and its variants), Thunderbolt, USB 4 and DisplayPort are protocols used between devices. So a USB-A can provide USB1, USB2, USB3.0 & USB 3.1 (5 gb/s) and, in some cases, USB 3.1 gen2 (10 gb/s). And USB-C can provide USB 3.1 up to USB 4 as well as Thunderbolt 3 and DisplayPort. That is not a complete list! Look on Wikipedia.

 

[dak46cmai]

The big problem is getting your head around the difference between physical connector (what it looks like) and protocol between devices (speed, capability, etc.). USB-A and USB-C are physical connector types. USB 1, 2, 3 (and its variants), Thunderbolt, USB 4 and DisplayPort are protocols used between devices. So a USB-A can provide USB1, USB2, USB3.0 & USB 3.1 (5 gb/s) and, in some cases, USB 3.1 gen2 (10 gb/s). And USB-C can provide USB 3.1 up to USB 4 as well as Thunderbolt 3 and DisplayPort. That is not a complete list! Look on Wikipedia.

Thank you. I understand more and more as I go along. Appreciate the info.

I seem to spend an inordinate amount of time on Google, to gather more knowledge. 😁

But, that's because I am eager to learn and understand.

 

[dak46cmai]

Exactly what do you have, I am still confused. Is it an external SSD with a cable or a little flash drive that plugs directly into a USB-A port? Flash drives are usually very slow, 119 would actually be quite good in my experience.

But if it's an external SSD, those should be much faster. I have three Samsung T3 USB SSD's and they test at around 400 MB/sec write / 450 read on a USB 3.0 port. I also have four 2-TB Samsung T7's and they test around 850 MB/sec write, 920 read connected to a USB-C port.

Hi

I have now received my T7 500GB. I ran speed tests straight out of the box (ex Fat) and I attach an image.

Then I finally managed to change the T7 in disc utility to APFS, after some research, because it did not show APFS when I tried to erase it. I have attached the image for your consideration.

As you will see, the speeds are just over 700mbs in both cases.

I would welcome your thoughts on the speeds. The T7 is connected to my MacBook M2 by C type cable.

Thank you

 

[Boyd01]

I would welcome your thoughts on the speeds.

Not a lot to say. My speeds were from the 2tb T7, it is not unusual for smaller SSD's to be slower. Also, there have been numerous complaints about USB SSD's being slower on M1 Macs than Intel. No idea if that has improved on the M2. I don't have any Apple Silicon Macs myself. FWIW, this is what I get.

 

[dak46cmai]

Not a lot to say. My speeds were from the 2tb T7, it is not unusual for smaller SSD's to be slower. Also, there have been numerous complaints about USB SSD's being slower on M1 Macs than Intel. No idea if that has improved on the M2. I don't have any Apple Silicon Macs myself. FWIW, this is what I get.

View attachment 2057516

Ok. Many thanks

 

[dak46cmai]

Ok. Many thanks

Sorry to bother you again. Just done a backup and run speed test. Selected T7 and black magic states along the lined " cannot perform speed test, read only, please select another source. "
Any ideas?

Thanks

 

[Boyd01]

The backup may have removed the directory where the Blackmagic file was stored. Click the gear button > Select Target Drive and choose a location on the T7 again.

But - seriously - I would stop worrying about all this. The drive is working and it will be fast enough for just about anything a normal user wants to do. I work with lots of very large files (over 100gb), which is pretty unusual.

 

[dak46cmai]

The backup may have removed the directory where the Blackmagic file was stored. Click the gear button > Select Target Drive and choose a location on the T7 again.

But - seriously - I would stop worrying about all this. The drive is working and it will be fast enough for just about anything a normal user wants to do. I work with lots of very large files (over 100gb), which is pretty unusual.

Thank you. Clicked gear button, selected target drive, T7 from sidebar. The folder is empty, so nothing to choose. Clicked open...same result. But I appreciate your comments , that it is fast enough.

 

[Boyd01]

There needs to be a folder that you have permission to access in order to use the speedtest. This is because the test creates a file and reads/writes to it. In your screenshot, it appears that you have chosen the root directory of the T7. The test won't work at the root level of a disk (in my experience), you must choose a folder.

So, create a folder at the root of your disk, then choose that folder in the speed test.

 

[dak46cmai]

There needs to be a folder that you have permission to access in order to use the speedtest. This is because the test creates a file and reads/writes to it. In your screenshot, it appears that you have chosen the root directory of the T7. The test won't work at the root level of a disk (in my experience), you must choose a folder.

So, create a folder at the root of your disk, then choose that folder in the speed test.

Many thanks.

 

[dak46cmai]

Many thanks.

Done that. All working well on speed test