Question HP P600 SSD performance question

[DPV_R]

Hello, everyone

I just bought HP P600 SSD and immediately tried to check its performance using Crystal Disk Mark. The SSD is supposed to be very fast and HP claims the following:

Max. sequential read speed - 560 MB/s

Max. sequential write speed - 490 MB/s

Sounds very sweet (even compared to T5) and some reviewers tests basically confirmed these parameters. See, for example:

https://www.legitreviews.com/hp-portable-ssd-p600-review_206578/2



However the results I got are somehow significantly lower:



Its even less than 500 MB/s!

I tested it with:
System : Windows.Desktop X64 10.0.17763.529
DeviceName : Surface Book Microsoft Corporation (1st gen)

I know several factors contribute to the speed test and maybe my Surface Book is not just powerful enough. Or maybe SSD is faulty? What do you think?

 

[rgd1101]

does it have usb 3.1 gen 2 on the laptop?

 

[DPV_R]

No, but the laptop does have USB 3.0. As far as I know USB 3.0 has bitrate of 625 MB/s, so it should not have affected the speed test results.

Or am I wrong?

 

[rgd1101]

yup. that the max on page.
the device was test on 3.1 gen 2

 

[DPV_R]

Thanks for the answer. Does it mean the SSD is not faulty and its performance is OK?

 

[rgd1101]

it look fine

 

[DPV_R]

Thank you! Another small question.

In real data transfer tests I did the actual speed was like 200 - 250 MB/s at the highest (lasts only seconds usually). Sometimes it jumps to 200 MB/s, sometimes it drops to like 300 kB/s or even lower. Is this normal?

 

[rgd1101]

What the source? copy from and to itself?
still connect to usb 3.0?

 

[DPV_R]

Copying from laptop SSD to the HP SSD via USB 3.0. And vice versa.

 

[DPV_R]

Then again, If I have a USB 3.0 on my laptop which is capable of 625 MB/s, why do I get only 420 MB/s?

Can someone explain please? And why is the actual speed even lower?

 

[DPV_R]

another little issue I would like to ask - Android OTG on my Moto Z2 Play keeps disconnecting with this SSD? Any reasons as to why?

 

[DPV_R]

What the source? copy from and to itself?
still connect to usb 3.0?

Can you please answer the remaining questions? Thanks