ssd m.2 (m) vs m.2 (b+m) what's the difference?

[arthurdemelo123]

ssd m.2 (m) vs m.2 (b+m) what's the difference?
what difference affect speed?
and...
i have seen videos on youtube
about a m.2 with pci-e adapter support
and i did not find any vudeo about the difference between normal m.2 ssd and the same m.2 ssd with pci-e
has anyone done this test?
have any gain if i use any m.2 ssd in a pci-e adapter?
should i use direct m.2 or use the pci-e adapter?  
some advantage?

 

[shadowbyte]

WHY ARE WE IN ALL CAPS

[ARikozuM]

Why are you YELLING!?

[Drak3]

Tackling "regular" M.2 SSDs vs. PCIe/NVMe M.2 SSDs.

"Regular" M.2 SSDs are SATA III based. They're no faster than a 2.5" SSD, and thus, they are slower than a PCIe/NVMe SSD.

 

As for what the slot is keyed for: It's a physical method of assigning what an M.2 slot can do.

B keyed M.2's can handle PCIe x2, SATA, SMBus, USB 2.0 and 3.0, and other stuffs.

M keyed M.2's can handle PCIe x4, SATA, and SMBus. (PCIe/NVMe SSDs can operate at faster speeds)/

B+M keyed operate at the speed of B keyed M.2's, they're just keyed that way for broader compatibility

 

As for adapters, there is ZERO performance gain if the M.2 on the board and the SSD are both rated for PCIe x4 speeds. The adapters are mainly to add M.2 slots for SSDs if your board doesn't have one, or it is already occupied.

[arthurdemelo123]

This is how I feel inside sorry guys
 

[stealth80]

PCIE adapter is for people like me that are using M.2 on z97 which is limited to 4x PCIE through the native onboard m.2 socket. this limits the drive to around 900mb/s from the 1100mb/s of my 941. If I use the pcie adapter it gives me the full speed

[arthurdemelo123]

https://www.youtube.com/watch?v=70hvGe3WylA

 

5 minutes ago, Drak3 said:

Tackling "regular" M.2 SSDs vs. PCIe/NVMe M.2 SSDs.

"Regular" M.2 SSDs are SATA III based. They're no faster than a 2.5" SSD, and thus, they are slower than a PCIe/NVMe SSD.

 

As for what the slot is keyed for: It's a physical method of assigning what an M.2 slot can do.

B keyed M.2's can handle PCIe x2, SATA, SMBus, USB 2.0 and 3.0, and other stuffs.

M keyed M.2's can handle PCIe x4, SATA, and SMBus. (PCIe/NVMe SSDs can operate at faster speeds)/

B+M keyed operate at the speed of B keyed M.2's, they're just keyed that way for broader compatibility

 

As for adapters, there is ZERO performance gain if the M.2 on the board and the SSD are both rated for PCIe x4 speeds. The adapters are mainly to add M.2 slots for SSDs if your board doesn't have one, or it is already occupied.

"Regular" M.2 SSDs are SATA III based. They're no faster than a 2.5" SSD ??
https://www.youtube.com/watch?v=70hvGe3WylA

 

[pagani123]

pcie are theoretically faster, but It depends on the ssd.

[Scruffy90]

[arthurdemelo123]

...

[Drak3]

4 minutes ago, arthurdemelo123 said:

https://www.youtube.com/watch?v=70hvGe3WylA

 

"Regular" M.2 SSDs are SATA III based. They're no faster than a 2.5" SSD ??
https://www.youtube.com/watch?v=70hvGe3WylA

 

The HyperX they tested was PCIe 2.0 x4. It would see the same performance between an adapter and an M.2 slot on the board. It's also from 2004, according the Amazon page they link to.

The Intel AiC SSD is newer (2015), and runs PCIe 3.0 x4.

 

Being honest with you, there isn't a "normal" M.2 SSD. There are two types: SATA and PCIe. SATA M.2 SSDs still operate at SATA speeds (mostly SATA III), meaning that they're no faster than a 2.5" SSD. PCIe M.2 SSDs operate basically identically to their PCIe add in card counterparts, but storage might be held back because of how much smaller M.2's are than add in cards.