I am a bit confused what type 3 M.2 is?

[Alexoferith]

I wonder if anyone can help explain if Type 3 M.2 is the same as NVME? My motherboard is EVGA X99 Classified. The manual only says that it is for Type 3 M.2. The slot has the notch on the right-hand side. But then watching a video on Youtube explaining difference between M.2 & NVME. M.2 has the notch on the left. NVME has a notch on both right and left-hand side. NVME can only fit into a slot that has the notch on the right-hand side while M.2 can fit in both. Am I correct?
The price of both M.2 & NVME has dropped a lot since the day I bought the motherboard. I am considering upgrading to one of these storage devices to boot from. Also, am I correct to say that M.2 is faster than a 2.5 inch SATA SSD? Thank you very much for your help in advance.

 

[USAFRet]

I think you're a bit confused on the "m.2" thing.

m.2 is the form factor. Much like 2.5" or 3.5" drives.

M.2 drives can be either NVMe OR SATA III.
A SATA m.2 drive is the exact same performance as a 2.5" typical SSD. Just in a different package.
The m.2 NVMe is the faster drive type.

The spec sheet for your board does not spcifically state the m.2 port is NVMe capable, so it is assumed that it is SATA only.
https://www.evga.com/products/pdf/151-HE-E999.pdf
https://www.evga.com/articles/00866/EVGA-X99-Motherboards/

 

[SkyNetRising]

I find EVGA user manuals to be rather lacking. Other manufacturers provide much more detailed info in their manuals.
If you can't find necessary info in manuals or specifications provided by support web site, then contact customer support.