If My SSD runs at 3GB/s+ , does that mean my laptop supports 4GB/s ?

[knowledge2121]

I just wanted to test my gaming laptop which has an i7-7700HQ with a Samsung 960 EVO installed in the M.2 slot.

I am running Ubuntu 18.04 on the laptop...

There is a utility under the Disk app which lets you benchmark the drive: I choose like the following:


Transfer rate:

Number of Samples: 100
Sample Size: 100MB

Access Time:

Number of Samples: 1000

I reach 3500 MB/s+ speeds .... does this mean my laptop supports 4GB/s ? isn't 4GB/s the maximum for PCIe NVMe SSDs for M.2 drives ?

Many Thanks

 

[Emerald]

The EVO is rated for 3200MB/s Reads and 1900 MB/s Writes; therefore, the limitation is with the EVO.

Max throughput of the M.2 GEN3 is 3.94 GB/s

 

[knowledge2121]

but if I hit 3GB/s+ ... it means my M.2 slot supports 4GB/s ... correct ?

 

[Emerald]

Yes, Max throughput of the M.2 GEN3 is 3.94 GB/s