What is NVMe?

[Carlos1010]

Hi everyone,

So I saw the Techquickie video on this and yeah, I still don't get it. Well actually I think I do a little. Is NVMe the technology in PCIE SSD's,M.2 SSD's and SATA express SSD's have that make then read multiple file at once? Also can there be NVEe on a HDD? Lastly what is the difference between SATA Express SSD and a PCIE SSD, any speed differences? Thanks in advanced!

[Enderman]

1) there are no sata express SSDs in existence

2) PCIe and M.2 SSDs can also be non-NVME

3) NVME on a HDD would be useless because HDDs are not bottlenecked by SATA

4) sata express and PCIe are types of connectors

5) https://en.wikipedia.org/wiki/NVM_Express

[themctipers]

There isn't nVME on hdd because it's bottleneck is the technology itself. 

 

I dunno about the reading multiple files at once. 

The sata one is limited to sata speeds (at max, 6gb/s) and the pcie one is able to read at pcie 3 speeds (multiple times greater than sata)

[VerticalDiscussions]

The Future btw.

[Carlos1010]

8 minutes ago, Enderman said:

1) there are no sata express SSDs in existence

2) PCIe and M.2 SSDs can also be non-NVME

3) NVME on a HDD would be useless because HDDs are not bottlenecked by SATA

4) sata express and PCIe are types of connectors

5) https://en.wikipedia.org/wiki/NVM_Express

Huh? No SATA Express SSD's? Why did Linus even talk about them then? Also thanks for your informative response! 

[daniellearmouth]

5 minutes ago, Carlos1010 said:

Hi everyone,

So I saw the Techquickie video on this and yeah, I still don't get it. Well actually I think I do a little. Is NVMe the technology in PCIE SSD's,M.2 SSD's and SATA express SSD's have that make then read multiple file at once? Also can there be NVEe on a HDD? Lastly what is the difference between SATA Express SSD and a PCIE SSD, any speed differences? Thanks in advanced!

NVMe is the technology that is in some PCIe and M.2 SSDs. It is also in some 2.5'' form factor SSDs, although with the use of what's called a U.2 connector, though that's not too important right now. Also, since NVMe is pretty much only SSD-specific, it will not work with HDDs, since they can't reap the benefits of NVMe.

Note, though, that there are no SATA Express drives of any kind on the market right now.

[Carlos1010]

3 minutes ago, daniellearmouth said:

NVMe is the technology that is in some PCIe and M.2 SSDs. It is also in some 2.5'' form factor SSDs, although with the use of what's called a U.2 connector, though that's not too important right now. Also, since NVMe is pretty much only SSD-specific, it will not work with HDDs, since they can't reap the benefits of NVMe.

Note, though, that there are no SATA Express drives of any kind on the market right now.

But, what does this technology do? Thanks for your response! 

[Carlos1010]

15 hours ago, VerticalDiscussions said:

The Future btw.

But what does this technology/future thing do? 

[VerticalDiscussions]

6 hours ago, Carlos1010 said:

-snip-

It allows us to to finally ditch Sata permanently and in a possible near future with more research, achieve pcie express 3.0 speed limits, which is meant to be replaced by the pcie express 4.0, which has been in development since 2011.

 

Funny thing is this a 2.5Gb/sec drive technology, but 3.0 limits are 32Gb/sec, so we can only assume 4.0 will provide almost double the bandwidth. Also it allows for less cabled system, since you attach these drives to either a pci-e slot or an m.2 slot.

[Carlos1010]

13 minutes ago, VerticalDiscussions said:

It allows us to to finally ditch Sata permanently and in a possible near future with more research, achieve pcie express 3.0 speed limits, which is meant to be replaced by the pcie express 4.0, which has been in development since 2011.

 

Funny thing is this a 2.5Gb/sec drive technology, but 3.0 limits are 32Gb/sec, so we can only assume 4.0 will provide almost double the bandwidth. Also it allows for less cabled system, since you attach these drives to either a pci-e slot or an m.2 slot.

So is NVMe the technology that lets M.2 and PCIe SSD's to perform faster? There are also some PCIe SSD's that down't have this NVMe, is that possible?

[VerticalDiscussions]

11 minutes ago, Carlos1010 said:

-snip-

Yep, since it allows for such connections. And there are also PCIe ssds that dont have the NVME protocol.