- Jun 10, 2020
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Please keep it to 1 thread.
UPDATED DESCRIPTION (1/16/2024): FIXED!!!
I've made a post a couple days ago about the MSI MPG B550 GAMING PLUS motherboard.
Recently, I purchassed and installed the Samsung 980 Pro NVMe M.2 SSD.
The issue I found, was that installing that SSD into the M2_1 slot, I was only getting one lane recognized (PCIe 4.0 x 1, instead of PCIe 4.0 x 4).
This results in a speed decrease of four fold. In that post I found someone else having the same issue as me, @gleb23.
They found a similar issue on a different site, in German, though in that post it recognizes 2 lanes, isntead of 4.
He found a partial solution. Put that SSD into the M2_2 slot, which allows the disk to use all four lanes. The problem is that this slot is only PCIe 3.
That means, that now the disk will be running at half it's normal operating speed. This doesn't fix the underlying issue though.
I noticed that all of us were using AMD CPUs, especially Zen 3 ones. @gleb23 and Carstenohne are using 5000 series CPUs, while i'm using a 3000 series CPU, the Ryzen 7 3800x.
It's important to note that this slot (M2_1) is connected to the CPU, unlike the M2_2 slot, which isn't.
We haven't found a solution. Will anyone help?
Up to date BIOS, SSD updated to latest firmware in Samsung Magician, and I fully formatted all of my disks and completely reinstalled Windows 11 Pro.
I've made a post a couple days ago about the MSI MPG B550 GAMING PLUS motherboard.
Recently, I purchassed and installed the Samsung 980 Pro NVMe M.2 SSD.
The issue I found, was that installing that SSD into the M2_1 slot, I was only getting one lane recognized (PCIe 4.0 x 1, instead of PCIe 4.0 x 4).
This results in a speed decrease of four fold. In that post I found someone else having the same issue as me, @gleb23.
They found a similar issue on a different site, in German, though in that post it recognizes 2 lanes, isntead of 4.
He found a partial solution. Put that SSD into the M2_2 slot, which allows the disk to use all four lanes. The problem is that this slot is only PCIe 3.
That means, that now the disk will be running at half it's normal operating speed. This doesn't fix the underlying issue though.
I noticed that all of us were using AMD CPUs, especially Zen 3 ones. @gleb23 and Carstenohne are using 5000 series CPUs, while i'm using a 3000 series CPU, the Ryzen 7 3800x.
It's important to note that this slot (M2_1) is connected to the CPU, unlike the M2_2 slot, which isn't.
We haven't found a solution. Will anyone help?
Up to date BIOS, SSD updated to latest firmware in Samsung Magician, and I fully formatted all of my disks and completely reinstalled Windows 11 Pro.
Last edited:
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