Question Installing PCI-E 3.0 SSD on MSI H97 Gaming 3 with an adapter

Apr 7, 2021
22
1
15
0
I have in idea of installing an M.2 NVME on my motherboard through its PCI-E 2.0 x4 slot using an adapter. I'm pretty sure it'll work fine but i don't understand if the speeds of PCI-E 3.0 x16 will drop to x8. I've read the motherboard's manual and there's not a word about the possible speed drop. What do you say?
 

USAFRet

Titan
Moderator
Mar 16, 2013
145,670
8,912
175,340
22,724
I have in idea of installing an M.2 NVME on my motherboard through its PCI-E 2.0 x4 slot using an adapter. I'm pretty sure it'll work fine but i don't understand if the speeds of PCI-E 3.0 x16 will drop to x8. I've read the motherboard's manual and there's not a word about the possible speed drop. What do you say?
  1. If you connect in a PCIe 2.0 slot, thats what it will operate at. No matter what adapter.
  2. If you're planning on using this as the boot drive, unlikely to work.
 
Reactions: HeartOfAdel
Apr 7, 2021
22
1
15
0
  1. If you connect in a PCIe 2.0 slot, thats what it will operate at. No matter what adapter.
  2. If you're planning on using this as the boot drive, unlikely to work.
It will boot 100%. A lot of people have done that, the motherboard supports NVME.
Any SSD with speeds up to 1500-1800 mb will not be bottlenecked by that slot and these speeds are plenty enough for everything.
 
Apr 7, 2021
22
1
15
0
Since you apparently know precisely how everything works, I'm not sure why we're involved at this point.
I don't know everything but this is something that I've already figured out by reading other people's experiences.
The question was about the pci speed drop. Thank you anyway!
 

USAFRet

Titan
Moderator
Mar 16, 2013
145,670
8,912
175,340
22,724
It will boot 100%. A lot of people have done that, the motherboard supports NVME.
Any SSD with speeds up to 1500-1800 mb will not be bottlenecked by that slot and these speeds are plenty enough for everything.
Really....

Boards of that era, NVMe support is very spotty.
Some boot no problem.
Some, only with the most recent BIOS.
Some, no boot at all.


So, we can contrast your "100%" with all the people and systems for whom it did NOT work.


And regarding the "speed drop".

PCIe 2.0 is ~1/2 a 4.0.
So a drive such as an Intel 660p that would be seen as 1800 (raw sequential) in a PCIe 4.0 slot would be around 900 in a PCIe 2.0 slot.
Barely above SATA III, and totally indistinguishable, performancewise.
 

ASK THE COMMUNITY

TRENDING THREADS