Question I'm only getting one lane for my PCIe 4 M.2 SSD ?

[Aggressive Combo]

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.

 

[helpstar]

update the BIOS of your motherboard

M2_1 shoud be PCIe 4.0 or PCIe 3.0 x4 depending on your CPU
M2_2 is PCIe 3.0 x4

how did you measure the SSD´s speed?

 

[Aggressive Combo]

Crystaldiskmark and samsung Magician. I might have to update the bios, but isn't that a little dangerous?

 

[mdd1963]

You can certainly check M.2 NVME slot lane allocation within the BIOS first, looking for both M.2 NVME slots to have 4x lanes..

 

[thestryker]

Was the 970 installed in M2_1 previously and if so was it getting 4 lanes?

You can also swap the two drives and see how they're reporting.

 

[helpstar]

Crystaldiskmark and samsung Magician. I might have to update the bios, but isn't that a little dangerous?

if you do it like this, it´s very unlikely that something is going wrong:

View: https://www.youtube.com/watch?v=LRyFMf0D9Lc


you can always flash back the BIOS only using your motherboard, even if it crashes while doing so before. "flash bios button" prevents bricking your BIOS.

 

[Aggressive Combo]

Was the 970 installed in M2_1 previously and if so was it getting 4 lanes?

You can also swap the two drives and see how they're reporting.

It has always been in the m2_2 slot

 

[Aggressive Combo]

You can certainly check M.2 NVME slot lane allocation within the BIOS first, looking for both M.2 NVME slots to have 4x lanes..

How would I do that?

 

[Aggressive Combo]

if you do it like this, it´s very unlikely that something is going wrong:

View: https://www.youtube.com/watch?v=LRyFMf0D9Lc


you can always flash back the BIOS only using your motherboard, even if it crashes while doing so before. "flash bios button" prevents bricking your BIOS.

Updated, nothing changed. I'll now completely factory reset my pc and make that drive my main one. if that doesn't fix it, I'll have to figure out if it's the m2 or motherboard. somehow...

UPDATE: Completely factory reset my pc including reformatting all of my drives, making the 980 pro my main drive, and nothing changed.

 

[thestryker]

Updated, nothing changed. I'll now completely factory reset my pc and make that drive my main one. if that doesn't fix it, I'll have to figure out if it's the m2 or motherboard. somehow...

Just swap the two drives since you know your 970 works properly.

 

[gleb23]

Yesterday I installed a 980 Pro 2TB SSD on my MSI B550 GAMING PLUS motherboard, but after creating a disk for it, I looked around Samsung Magician and found out it's saying it's only PCIe 4 x 1. The speeds are only about a quarter of normal (both in Samsung Magician and CrystalDiskMark).

I installed it in the M2_1 slot, following the MSI instructions for this motherboard.
The only other PCIe devices I have is a 970 Evo 500GB SSD on the M2_2 slot (working fine), and my RX 5600 XT.

The firmware for Samsung Magician is up to date, and the drive appears to have no defects/bad sectors.
Why is this happening to me?
CPU = Ryzen 7 3800X

Hello, just the other day I encountered the same problem. I decided to install a second m2 SSD in the Msi b550 mpg gaming plus. Before this, m2_1 had a 970 Evo plus 500gb (pcie 3x4) installed. The other day I bought an HP fx900 1tb, but I immediately returned it because the speed stated was not there, I thought the problem was in the HP SSD. I freaked out and took 980 pro for 1 tb. The same thing cuts speed. Bios updated, new Windows clean. 980pro in m2_1 speed is about 1300-1700. 970 Evo plus in m2_2 speed 3400 which corresponds to pcie3x4. When you swap the speed in m2_1 970 Evo plus the speed is 3400 due to the SSD pcie3x4 limitation. In m2_2 980 pro, the speed is cut by the lower m2 on pcie3x4 and also produces a speed of about 3400. The processor is 5600x. GPU 1080ti

 

[Aggressive Combo]

Hello, just the other day I encountered the same problem. I decided to install a second m2 SSD in the Msi b550 mpg gaming plus. Before this, m2_1 had a 970 Evo plus 500gb (pcie 3x4) installed. The other day I bought an HP fx900 1tb, but I immediately returned it because the speed stated was not there, I thought the problem was in the HP SSD. I freaked out and took 980 pro for 1 tb. The same thing cuts speed. Bios updated, new Windows clean. 980pro in m2_1 speed is about 1300-1700. 970 Evo plus in m2_2 speed 3400 which corresponds to pcie3x4. When you swap the speed in m2_1 970 Evo plus the speed is 3400 due to the SSD pcie3x4 limitation. In m2_2 980 pro, the speed is cut by the lower m2 on pcie3x4 and also produces a speed of about 3400. The processor is 5600x. GPU 1080ti

It really seems like we have the exact same problem. Please message me if you find a solution. The speed of the 980 pro is 3400 because it's in a pcie 3 slot, right?

 

[gleb23]

It really seems like we have the exact same problem. Please message me if you find a solution. The speed of the 980 pro is 3400 because it's in a pcie 3 slot, right?

Yes, that's right, I've been trying to solve this problem for 3 days now. The only way to solve the problem was by averaging the speed values of both drives to 3400. By inserting the 970 evo into the m2_1 slot. And here is the 980 pro in the m2_2 slot. Thus, it is similar to using a USB flash drive with version 2.0 in a USB 3.0 connector in the case of the 970evo. And exactly the opposite in the case of the 980 pro in the pcie 3 slot (m2_2)

P.S. I really hope that someone will help us with this problem and we can solve it, but I haven’t found it yet.
By the way, what power supply do you have?
Here are my full specs:
CPU: r5 5600x
GPU: 1080ti msi
SSD1: Samsung 970 EVO Plus [MZ-V7S1T0BW]
SSD2: Samsung 980 PRO [MZ-V8P1T0BW]
Power supply: Cougar GEX650 [31GE065002P01]
Cooling system: DEEPCOOL LE720
Motherboard: MSI MPG B550 GAMING PLUS
DIMMB1: Kingston Fury KF2666C13D4/16GX 16 GB DDR4-2666 DDR4 SDRAM x2 (16gbx2) 32gb
P.s.s. I came across a similar problem on other forums, and did not find a clear solution https://extreme.pcgameshardware.de/...0x-verbindet-nvme-nur-mit-pcie-3-0-x2.606668/

MSI B 550 Gaming Plus M2_1 Port defekt?

Hallo Zusammen, ich habe mir vor ca. 3 Wochen ein neues System zusammengestellt, welches wie folgt aussieht: CPU: AMD Ryzen 5600X Mainboard: MSI B550 Gaming Plus GPU: AMD Readeon 6800 Netzteil: Seasonic Focus GX 750W Memory: 16 GB Crucial DIMM DDR4 3600 (2x8GB) Festplatte: 500GB Kingston...

www.hardwareluxx.de

 

[Aggressive Combo]

I hope so too. It's interesting, there's many people having this issue but there's no clear fix? It's baffling.

By the way, did you try just using that 980 pro in m2_1 with no drive in m2_2? How about using less usb ports? It must be a motherboard issue since many people are experiencing it, especially on this motherboard, right?

 

[gleb23]

I hope so too. It's interesting, there's many people having this issue but there's no clear fix? It's baffling.

By the way, did you try just using that 980 pro in m2_1 with no drive in m2_2? How about using less usb ports? It must be a motherboard issue since many people are experiencing it, especially on this motherboard, right?

Yes, I tried leaving only one 980 pro drive in the m2_1 slot. Disabling all sata and extra usb connections. I left the mouse and keyboard and 980pro in the m2_1 slot. I installed Windows there and nothing helped, everything was the same.

Today I will try to raise the processor. And I’ll try to install 1600x instead of 5600x (this is the only one available to test). If M2_1 starts up stably at least at pcie3x4 speed because... The processor does not support pcie4x4 speed. This may be a unique feature of compatibility of the 5xxx series of processors with this motherboard. Maybe loosening the screws on the CPU cooler stand a little will affect this, I’ll also try switching the power supply. And I’ll try to find out something by imperial means.

 

[Roland Of Gilead]

Yes, that's right, I've been trying to solve this problem for 3 days now. The only way to solve the problem was by averaging the speed values of both drives to 3400. By inserting the 970 evo into the m2_1 slot. And here is the 980 pro in the m2_2 slot. Thus, it is similar to using a USB flash drive with version 2.0 in a USB 3.0 connector in the case of the 970evo. And exactly the opposite in the case of the 980 pro in the pcie 3 slot (m2_2)

P.S. I really hope that someone will help us with this problem and we can solve it, but I haven’t found it yet.
By the way, what power supply do you have?
Here are my full specs:
CPU: r5 5600x
GPU: 1080ti msi
SSD1: Samsung 970 EVO Plus [MZ-V7S1T0BW]
SSD2: Samsung 980 PRO [MZ-V8P1T0BW]
Power supply: Cougar GEX650 [31GE065002P01]
Cooling system: DEEPCOOL LE720
Motherboard: MSI MPG B550 GAMING PLUS
DIMMB1: Kingston Fury KF2666C13D4/16GX 16 GB DDR4-2666 DDR4 SDRAM x2 (16gbx2) 32gb
P.s.s. I came across a similar problem on other forums, and did not find a clear solution https://extreme.pcgameshardware.de/...0x-verbindet-nvme-nur-mit-pcie-3-0-x2.606668/

MSI B 550 Gaming Plus M2_1 Port defekt?

Hallo Zusammen, ich habe mir vor ca. 3 Wochen ein neues System zusammengestellt, welches wie folgt aussieht: CPU: AMD Ryzen 5600X Mainboard: MSI B550 Gaming Plus GPU: AMD Readeon 6800 Netzteil: Seasonic Focus GX 750W Memory: 16 GB Crucial DIMM DDR4 3600 (2x8GB) Festplatte: 500GB Kingston...

www.hardwareluxx.de

Ideally you need to set up your own thread, so the community can help you.

 

[Aggressive Combo]

Yes, I tried leaving only one 980 pro drive in the m2_1 slot. Disabling all sata and extra usb connections. I left the mouse and keyboard and 980pro in the m2_1 slot. I installed Windows there and nothing helped, everything was the same.

Today I will try to raise the processor. And I’ll try to install 1600x instead of 5600x (this is the only one available to test). If M2_1 starts up stably at least at pcie3x4 speed because... The processor does not support pcie4x4 speed. This may be a unique feature of compatibility of the 5xxx series of processors with this motherboard. Maybe loosening the screws on the CPU cooler stand a little will affect this, I’ll also try switching the power supply. And I’ll try to find out something by imperial means.

I have a 3800x. Not because of the 5000 series. Maybe it's just Zen 3 AMD?

 

[Aggressive Combo]

Ideally you need to set up your own thread, so the community can help you.

Isn't this a thread? Or is this just a question? How do you start a thread here?

 

[Roland Of Gilead]

Isn't this a thread? Or is this just a question? How do you start a thread here?

On the home page at the top corner you will see 'Post thread'. You start there.

 

[Aggressive Combo]

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.

 

[gleb23]

I tried to rule out the problem with the ssd 980 pro and installed it in my wife’s laptop. There is a 9750h processor and it only supports pcie3x4 and I checked the speed and it normally corresponds to the speed of pcie3x4.









Then I replaced it with an r5 1600 processor in my PC. As a result, I didn’t see the 980pro in the m2_1 slot at all, even in bios.

I returned everything back to 5600x. I checked the speed again, and suddenly a miracle happened. But nothing has changed.










I don’t know if I have the strength to write and deal with this with msi and samsung on the official forums and write to technical support. I'm very tired of this, a lot of nerves were spent. There is also the option to submit it for warranty repairs to the store where you bought it all, but I don’t know how long it will take. And I mostly work from home and my PC is my main machine. And now I’m thinking of coming to terms with this and just swapping the disks and using them at pcie3x4 +-3400 speeds

Another interesting thing is that all programs show that the 980pro runs on pcie4.0x4 without any reduction to x2 or x1

 

[thestryker]

It honestly sounds like a motherboard problem, at least I'm the case of gleb23's system given the two types of SSD having the same issue and swapping to a PCIe 3.0 drive in the main slot works fine. Seemingly would indicate a signaling issue of some sort with regards to PCIe 4.0.

It's unlikely to be a CPU issue because the primary PCIe slot would also be affected. In searching for similar cases on B550 boards most often it seemed to be MSI.

 

[Aggressive Combo]

I tried to rule out the problem with the ssd 980 pro and installed it in my wife’s laptop. There is a 9750h processor and it only supports pcie3x4 and I checked the speed and it normally corresponds to the speed of pcie3x4.









Then I replaced it with an r5 1600 processor in my PC. As a result, I didn’t see the 980pro in the m2_1 slot at all, even in bios.

I returned everything back to 5600x. I checked the speed again, and suddenly a miracle happened. But nothing has changed.










I don’t know if I have the strength to write and deal with this with msi and samsung on the official forums and write to technical support. I'm very tired of this, a lot of nerves were spent. There is also the option to submit it for warranty repairs to the store where you bought it all, but I don’t know how long it will take. And I mostly work from home and my PC is my main machine. And now I’m thinking of coming to terms with this and just swapping the disks and using them at pcie3x4 +-3400 speeds

Another interesting thing is that all programs show that the 980pro runs on pcie4.0x4 without any reduction to x2 or x1

That PCIe 4.0 is from your wifes laptop, or is that what it shows up on your pc as but you're getting PCIe 3 speeds?
I also switched both drives so they're both running at 3200MB/s, like you said.

 

[Aggressive Combo]

It honestly sounds like a motherboard problem, at least I'm the case of gleb23's system given the two types of SSD having the same issue and swapping to a PCIe 3.0 drive in the main slot works fine. Seemingly would indicate a signaling issue of some sort with regards to PCIe 4.0.

It's unlikely to be a CPU issue because the primary PCIe slot would also be affected. In searching for similar cases on B550 boards most often it seemed to be MSI.

Well that sucks. I guess i'll only ever fix this when I get a new motherboard. That will be when I will completely make a new pc, since due to AM5. That will take a couple years. I guess i'll just have to deal with PCIe 3 speeds. Is there any useful application of PCIe 4 anyway?

 

[thestryker]

Well that sucks. I guess i'll only ever fix this when I get a new motherboard. That will be when I will completely make a new pc, since due to AM5. That will take a couple years. I guess i'll just have to deal with PCIe 3 speeds. Is there any useful application of PCIe 4 anyway?

Literally just sequential transfer speed. Any other benefits regarding random IO or anything else come from the drive itself. Unless you have a workload that needs the high sequential speed I cannot imagine ever noticing a difference.