ASUS X670E EXTREME and Samsung 9100 PRO - Gen 5 issues

[Skaarj]

Hello. I have an Asus Crosshair X670E Extreme motherboard and a Samsung 9100Pro GEN 5.0 SSD. 64GB of RAM in two modules, 7950X CPU. I flashed different BIOS versions and the same problem everywhere. The Samsung 9100Pro is not detected by the BIOS as a GEN 5.0 drive, neither in auto mode nor in forced GEN 5.0 mode. I flashed the latest BIOS 3205 and the same situation, the board does not detect the presence of an installed SSD. Sometimes the board can detect the SSD in Gen 5.0 mode, but this happens in about 10% of cases. I will say right away that the BIOS was reset to default settings and the result did not change. Switching to GEN 4.0 Samsung 9100 Pro mode solves the problem of the motherboard detecting the SSD. The problem is exactly the same as the users from this topic  https://rog-forum.asus.com/t5/gaming-motherboards/asus-b650e-i-and-samsung-9100-pro-gen-5-issues/td-...

[Jiaszzz_ROG]

Hello @Skaarj 

Thank you for reaching out to us.
As observed in the thread you’re following, most users reporting similar issues are using mini-ITX boards, where typically only the M.2_1 slot supports Gen 5 speeds. However, the ROG CROSSHAIR X670E EXTREME features two M.2 slots that support Gen 5 and includes shared lanes with the PCIe slots.

Given this, in addition to the hardware and software specifications, we kindly ask you to provide detailed information on the slot configuration and cross-test results to help us further investigate the issue:
- An image of the BIOS main page along with the exported .CMO file
- PSU model, RAM model and part number
- Two system-generated .txt files from your Windows system:
1) Press WIN + R, type dxdiag, then click OK
2) Click Save All Information, choose a save location, then click Save
3) Repeat the same steps using msinfo32 to generate the second file

Regarding hardware installation:
- How many SSDs are installed? Which M.2 slots are they occupying? What are the corresponding driver and firmware versions?
Please also provide the capacity specifications and front/back photos of the SSDs, as shown:

- Are there any devices currently installed in the PCIEX16_1 or PCIEX16_2 slots?
- Considering that the 7950X CPU includes iGPU, we kindly ask you to remove all devices installed in the PCIEX16 slots (if any) and test the Samsung 9100 Pro SSD individually in both the M.2_1 and M.2_2 slots.
Please try BIOS settings for M.2 mode set to [Gen5], [Gen4], and [Auto], and record any behavioral differences. If possible, a video recording of this test would be helpful for us to better understand the issue.
We would like to confirm the specific scenario with examples such as: When the M.2_1 slot is set to [GEN5], booting the system from a powered-off (but not unplugged) state results in the system going directly into BIOS, with the Samsung 9100 Pro not being detected as a boot device. A second reboot is required to successfully enter the OS, and once booted, the SSD operates at Gen 5 speed (please provide a screenshot as reference). However, when the slot is set to [Auto], the system can enter the OS on the first attempt, but the SSD only runs at Gen 1 speed. In contrast, the M.2_2 slot functions normally, regardless of whether it is set to [GEN5] or [Auto], the system consistently detects the drive and boots successfully, with full Gen 5 performance.

Thank you for your cooperation.

[Skaarj]

Hello

--- Thank you for reaching out to us.
As observed in the thread you’re following, most users reporting similar issues are using mini-ITX boards, where typically only the M.2_1 slot supports Gen 5 speeds. However, the ROG CROSSHAIR X670E EXTREME features two M.2 slots that support Gen 5 and includes shared lanes with the PCIe slots.

Hello! Thanks for the reply. Sure, I know how many slots the Gen5 motherboard supports. But I have exactly the same problems as people from another thread. I had exactly the same problems in 2023 with another Gen4 Samsung 990 Pro drive, but at Gen4 speeds, the drive was also not detected by the BIOS, or rather sometimes it was detected. Exactly the same symptoms. On the ROG-CROSSHAIR-X670E-EXTREME-ASUS-1904 BIOS, this was fixed. I want to say right away that I am using Rog GEN-Z. I know that slot 1 uses 5.0, slot 2 uses Gen 4.0 from the chipset.

--- Given this, in addition to the hardware and software specifications, we kindly ask you to provide detailed information on the slot configuration and cross-test results to help us further investigate the issue:
- An image of the BIOS main page along with the exported .CMO file
- PSU model, RAM model and part number
- Two system-generated .txt files from your Windows system:
1) Press WIN + R, type dxdiag, then click OK
2) Click Save All Information, choose a save location, then click Save
3) Repeat the same steps using msinfo32 to generate the second file

Hardware:
CPU AMD Ryzen R9 7950X
MB ASUS ROG CROSSHAIR X670E EXTREME
RAM 64GB DDR5 Kingston KF556C36-32 SK Hynix A-Die (Dual Rank)
NVIDIA GeForce RTX 4090 24GB GDDR6x
SSD 4TB Samsung 9100 Pro & 2TB NVMe Samsung 990 Pro
HDD 10TB TOSHIBA HDWR11A & 6TB WD WD60EFRX
SATA Drive: Blu-Ray Pioneer BDR-207EBK & DVD-RW Lite-On iHAS524-T32 (Rev. B)
Sound Creative SB AE-9
TV-Tuner Behold TV T8
PSU 1,2kW Corsair HX1200i

I am attaching the image. I will send the files with detailed configuration in private messages.

--- How many SSDs are installed? Which M.2 slots are they occupying? What are the corresponding driver and firmware versions?
Please also provide the capacity specifications and front/back photos of the SSDs, as shown:

There are 2 SSDs installed in the Rog Gen-Z in the corresponding slots.

---Are there any devices currently installed in the PCIEX16_1 or PCIEX16_2 slots?

Yes

---Please try BIOS settings for M.2 mode set to [Gen5], [Gen4], and [Auto], and record any behavioral differences. If possible, a video recording of this test would be helpful for us to better understand the issue.

I'll send you the link to the video in a private message.

---We would like to confirm the specific scenario with examples such as: When the M.2_1 slot is set to [GEN5], booting the system from a powered-off (but not unplugged) state results in the system going directly into BIOS, with the Samsung 9100 Pro not being detected as a boot device.

Yes, BIOS does not see the drive in GEN5 mode. Sometimes it can be detected, but Windows boot fails with an error.

---A second reboot is required to successfully enter the OS, and once booted, the SSD operates at Gen 5 speed (please provide a screenshot as reference).

The system cannot work on Gen5, It works in GEN 4 mode.

---However, when the slot is set to [Auto], the system can enter the OS on the first attempt, but the SSD only runs at Gen 1 speed.

No. With these settings the system does not switch to Gen1 mode. The drive is stubbornly not seen.

---In contrast, the M.2_2 slot functions normally, regardless of whether it is set to [GEN5] or [Auto], the system consistently detects the drive and boots successfully, with full Gen 5 performance.

Yes, everything is fine in Rog GEN-Z, the second slot functions perfectly in AUTO mode (Samsung 990Pro 2Tb Gen4)

[Jiaszzz_ROG]

Hello @Skaarj 

Sorry for the extended wait. Our related department tested a Samsung 9100 Pro 4TB installed on the DIMM.2 GEN5, performing 40 consecutive reboots on the same firmware, but we were unable to reproduce the issue. Further testing and verification are still in progress.
To help us better identify the cause, could you please confirm whether the same problem occurs under the following scenarios on your system?
- Remove the Samsung 990 Pro, and connect only the Samsung 9100 Pro to either the M.2_1 or M.2_2 slot on the DIMM.2.
- Remove the Samsung 9100 Pro, and connect only the Samsung 990 Pro to either the M.2_1 or M.2_2 slot on the DIMM.2.
- With only the Samsung 9100 Pro connected, remove the DIMM.2 and install it directly into either the M.2_1 or M.2_2 slot on the motherboard.

We appreciate your assistance in advance.

[Skaarj]

Hello! Sorry for not responding for so long - I had no opportunity to check. I pulled out the Samsung 990Pro and left only the 9100Pro in ROG GEN-Z. As a result, the 9100Pro was detected by the motherboard, the BIOS had Gen5 mode. Windows loaded, the drive worked in Gen1.0 4x mode. I rebooted the PC and selected the AUTO mode in the BIOS settings, after applying the new setting, the drive disappeared from the system again. I went into the BIOS again, activated the Redriver Gen5.0 Optimization setting, the drive appeared again, Windows loaded again, and the drive also remained in Gen1.0 4x mode. After rebooting, it disappeared again. I performed about 10 more reboots, but the drive still did not appear. In the GEN4.0 slot in ROG GEN-Z, the drive works fine (it would be surprising if it did not, because this is the chipset slot). As for the 990Pro, as I wrote earlier, it works in both slots on ROG GEN-Z, but this was not always the case before BIOS version 1904 in the processor slot there were the same problems with detecting the drive, but naturally in GEN4.0 mode. There is no way to check how the drive works in the slots on the motherboard. I have a custom liquid cooling system, all this needs to be disassembled, and I need a PC every day. Actually, that's why I chose such a motherboard with the convenience of replacing the SSD. As I wrote above, everything works in forced Gen4.0 mode. GEN-Z, if I understand correctly, duplicates the processor slot soldered to the board itself, so I think everything will be the same. I think you need to look towards two PCIE slots, I have a sound card and a TV tuner there. Did you use these slots with devices in your test system?