Smart choice for a 4TB NVMe

[Hardcore Games]

I ams surprised that the SN700 only has 3161 read speed given how expensive that are.
PCIe 4.0 SSD at the budget friendly end of the market claim 7000+ MB/s read speeds.

 

[massaker]

Odd that the read and write is so far apart

3162 MB/s = sequential read speed is perfect for TB-connection. Write speeds are not so impressive, but it probably depends on SSD. For better speeds you need a good Gen4-SSD.
But 4K random write speed is realy bad - please check you settings @ policies, please set:
"removal policy" -> better perfomance,
"write-caching policy" -> enable write caching on the device,
then bench again.

 

[jeffshead]

...claim 7000+ MB/s read speeds.

Your not going to get 7000+ MB/s read speeds with a USB enclosure.

Below is what I get with the WD SN700 installed in the secondary PCIe connector on the motherboard of an Optiplex 7000 Micro PC:

Below is what I get with the 970 Evo Plus drive which is the system drive in the Optiplex 7000:

But 4K random write speed is realy bad - please check you settings @ policies, please set:
"removal policy" -> better perfomance,
"write-caching policy" -> enable write caching on the device,
then bench again.

SN700 in the 1M2 enclosure after changing and saving settings as depicted:

SN700 in the 1M2 enclosure after reboot:

This is with a 512GB Samsung drive in the 1M2 enclosure:

Not sure what to make of these poor write speeds.

 

[csendesmark]

If your enclosure does not include an external power option you should consider the power a drive requires in your purchase and what port you intend to use it on. I found this out the hard way by accident trying to use an NVMe in an enclosure with a motherboard that could not supply the required power to a front panel connector.

USB 3.2 and 3.1 Explained: What's Gen 1, Gen 2 and Gen 2x2?

Confused about all the USB 3.x standards? We have answers.

www.tomshardware.com

View attachment 352598

(edit)

In many cases the power requirements are printed on the NVMe sticker.

View attachment 352601

You may find these links helpful.

Amps to watts (W) conversion calculator

Amps (A) to watts (W) conversion calculator.

www.rapidtables.com

Watts to amps (A) conversion calculator

Electric power in Watts (W) to electric current in amps (A) calculator.

www.rapidtables.com

Power should not cause any issue on a modern USB ports, especially with type C variants, on DC stuff, the Amp is okay until it's total Wattage is smaller what the rig can give.
But m.2 SSD-s are not reaching the today's default 15W, so that's ok.
It can be different on a mobile device, but most current smartphone does 15W on it's main connector.