2,800mb/s Kingston SSD installed in a 10gbps Ugreen enclosure is writing way below 1,000mb/s

[tomjhardware]

I bought a 10gbps Ugreen SSD Case and a 512gb Kingston NV2 SSD with 3,500mb/s read speed and 2,800mb/s write speed. The case came with a 10gbps cable from Ugreen. When I do the data transfer tests, the computer transfers to the SSD at a speed that varies between 50-200mb/s and DiskMark indicates 985mb/s reading and 146mb/s writing.

In the last few days I searched how to solve the problem and I realized that it could have all kinds of reasons, such as the storage controller, incompatibility between SSD and motherboard/case, and others that I haven't discovered yet.

The SSD is formatted as exFAT and Basic Data Partition.

What do you think is happening?

Unfortunately I don't have another case, motherboard, SSD or 10Gbps cable available to test the components one by one. I tested it on the USB 3 input of a Playstation and of someone else's computer and the results were the same.

 

[Bob.B]

I bought a 10gbps Ugreen SSD Case and a 512gb Kingston NV2 SSD with 3,500mb/s read speed and 2,800mb/s write speed. The case came with a 10gbps cable from Ugreen. When I do the data transfer tests, the computer transfers to the SSD at a speed that varies between 50-200mb/s and DiskMark indicates 985mb/s reading and 146mb/s writing.

In the last few days I searched how to solve the problem and I realized that it could have all kinds of reasons, such as the storage controller, incompatibility between SSD and motherboard/case, and others that I haven't discovered yet.

The SSD is formatted as exFAT and Basic Data Partition.

What do you think is happening?

Unfortunately I don't have another case, motherboard, SSD or 10Gbps cable available to test the components one by one. I tested it on the USB 3 input of a Playstation and of someone else's computer and the results were the same.

If you have access to a pc with an open m.2 slot you could test the disk.

 

[SkyNetRising]

I bought a 10gbps Ugreen SSD Case and a 512gb Kingston NV2 SSD with 3,500mb/s read speed and 2,800mb/s write speed. DiskMark indicates 985mb/s reading and 146mb/s writing.
What do you think is happening?

That's pretty much expected result.
10gbps (gigabits per second) = 1.22 gigabytes per second.
Real bandwidth (minus overhead) is <0.9 gigabytes per second. Is what you're getting.
And low write scores are because of dramless SSD.

For more appropriate benchmark scores you have to install the drive in onboard M.2 slot on motherboard.
USB connection is limiting drive performance scores.

https://en.wikipedia.org/wiki/USB_3.0

 

[DSzymborski]

Yup, you're mixing megabytes and megabits up. Mbps is megabits per second, MBps is megabytes per second, and "mbps" is millibits per second, which precisely nobody has ever used.

 

[tomjhardware]

If you have access to a pc with an open m.2 slot you could test the disk.

That would be the smart thing to do, but I only have one laptop and I can't open it for warranty/support reasons.

 

[Bob.B]

That would be the smart thing to do, but I only have one laptop and I can't open it for warranty/support reasons.

Got a friend with a desktop?

 

[logainofhades]

The disk is fine. The max theoretical bandwith of a 10 gigabit connection is 1,250 megabytes.

 

[tomjhardware]

That's pretty much expected result.
10gbps (gigabits per second) = 1.22 gigabytes per second.
Real bandwidth (minus overhead) is <0.9 gigabytes per second. Is what you're getting.
And low write scores are because of dramless SSD.

For more appropriate benchmark scores you have to install the drive in onboard M.2 slot on motherboard.
USB connection is limiting drive performance scores.

https://en.wikipedia.org/wiki/USB_3.0

I was testing on a Thunderbolt 4 connection as well.

I thought about what you said and decided to do additional tests and realized that if I use 16 MiB or 128 MiB in DiskMark it writes close to the 1,000mb/s it should, however with 1 GiB it continues to write below 200mb/s in DiskMark.
I searched for reports of other users on the internet and found this same Kingston NV2 512gb model writing 1,000mb/s on the 1GiB DiskMark; and found this same Ugreen SSD Enclosure model writing close to 1,000mb/s on the 1GiB DiskMark.
I don't know why mine is failing the 1GiB test.
My SSD in the enclosure testing with 16MiB and 128MiB:

The same model of Kingston NV2 512gb SSD from another user, on a motherboard, testing with 1GiB:

The same model of Ugreen SSD Enclosure from another user testing with 1GiB:

 

[tomjhardware]

Got a friend with a desktop?

My friends aren't that much into technology, it would be a big ask to open their computers. I'm thinking about it as a last resort.

 

[tomjhardware]

The writing speed is the problem:

 

[Bob.B]

The writing speed is the problem:

Take the ext and cable to a service counter tell them what you found and have them test.