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EVGA RTX 3080 FTW3 running at PCI-E x4 instead of x16 on EVGA Z690 DARK with Intel i7 13700K

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altierijorge
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2022/12/16 04:43:02 (permalink)
I've tried reseating the GPU, run GPU-Z render test and a game, but the Bus width doesn't change.

In BIOS it's detected in the PE1 as Gen4 x4.


Any thoughts?

Edit: BIOS is the latest version. I’ve checked if the link width changed while playing Cyberpunk, it didn’t.
There is a pcie 4.0 m2 nvme ssd installed, but it shouldn’t affect the pcie1 width. Nothing is installed in the pcie2.
post edited by altierijorge - 2022/12/16 08:37:18
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    Mr. Fox
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    Re: EVGA RTX 3080 FTW3 running at PCI-E x4 instead of x16 on EVGA Z690 DARK with Intel i7 2022/12/16 09:56:33 (permalink)
    altierijorge
    Any thoughts?
    What do you have installed in the M.2 slots and any other PCIe slots? Anything? If your OS is installed on an NVMe SSD on the first slot that uses CPU lanes, try moving it to a different M.2 slot (leave the first one empty) that uses PCH lanes and see if it changes the PE1 speed to 16x.
    altierijorge
    Edit: BIOS is the latest version. I’ve checked if the link width changed while playing Cyberpunk, it didn’t.
    There is a pcie 4.0 m2 nvme ssd installed, but it shouldn’t affect the pcie1 width. Nothing is installed in the pcie2.
    You are correct. It should not, but it may even though it should not. I would start there and see what changes when you move it to a Gen 3 slot. I'd bet that it fixes the issue. I encountered that problem with the Unify-X and my ROG Strix Z690-E with a Gen 4 NVMe SSD installed in the Gen 4 slot. Using a Gen 3 NVMe SSD fixed it on the Unify-X and Strix mobos.
    post edited by Mr. Fox - 2022/12/16 10:01:21

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    #2
    altierijorge
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    Re: EVGA RTX 3080 FTW3 running at PCI-E x4 instead of x16 on EVGA Z690 DARK with Intel i7 2023/02/03 06:50:14 (permalink)
    Mr. Fox
    altierijorge
    Any thoughts?
    What do you have installed in the M.2 slots and any other PCIe slots? Anything? If your OS is installed on an NVMe SSD on the first slot that uses CPU lanes, try moving it to a different M.2 slot (leave the first one empty) that uses PCH lanes and see if it changes the PE1 speed to 16x.
    altierijorge
    Edit: BIOS is the latest version. I’ve checked if the link width changed while playing Cyberpunk, it didn’t.
    There is a pcie 4.0 m2 nvme ssd installed, but it shouldn’t affect the pcie1 width. Nothing is installed in the pcie2.
    You are correct. It should not, but it may even though it should not. I would start there and see what changes when you move it to a Gen 3 slot. I'd bet that it fixes the issue. I encountered that problem with the Unify-X and my ROG Strix Z690-E with a Gen 4 NVMe SSD installed in the Gen 4 slot. Using a Gen 3 NVMe SSD fixed it on the Unify-X and Strix mobos.


    Even if that works, doesn't that means the MB is faulty?
    #3
    Black_Hawx1
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    Re: EVGA RTX 3080 FTW3 running at PCI-E x4 instead of x16 on EVGA Z690 DARK with Intel i7 2023/02/03 07:43:39 (permalink)
    try booting with BIOS 2 selected with the bios selector, maybe bios 1 is faulty, I have a nvme in the 1st for and a gpu and it runs at x16 without any trouble, if u cant fix that with bios selector, try using another gpu for checking if the gpu have problems, if not, seems like a bad mobo cpi port.
     
    Im not sure, but i think u can run 2 x16 gpus with the 2nd pci slot, try using the other port and see what happens

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    rulik006
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    Re: EVGA RTX 3080 FTW3 running at PCI-E x4 instead of x16 on EVGA Z690 DARK with Intel i7 2023/02/05 02:26:29 (permalink)
    1) bad gpu
    2) bad cpu contact in socket(put out and put back, cpu pads need to be clear)
    3) bad pcie slot or switches
    #5
    altierijorge
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    Re: EVGA RTX 3080 FTW3 running at PCI-E x4 instead of x16 on EVGA Z690 DARK with Intel i7 2023/02/05 20:32:53 (permalink)
    I've used the other BIOS, the issue I have is I had to flash both to the latest version (2.05). Same problem.
    I installed a GTX 1080 thas works perfectly in my old MB and it does work at 16x when I can get to Windows. But I get an error while booting (D6) and I can't access BIOS using that card. If I don't try to access BIOS, I get the D6 error, but after that, it boots into windows and I could verify it's working at 16x.
    #6
    Hoggle
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    Re: EVGA RTX 3080 FTW3 running at PCI-E x4 instead of x16 on EVGA Z690 DARK with Intel i7 2023/02/06 00:04:23 (permalink)
    If the 1080 is working at 16x I can’t think of a reason why the 3080 wouldn’t be seen as 16X.

    Have you made sure the GPU is on the latest bios and getting enough power from the PSU?

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    altierijorge
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    Re: EVGA RTX 3080 FTW3 running at PCI-E x4 instead of x16 on EVGA Z690 DARK with Intel i7 2023/02/13 11:07:42 (permalink)
    Would changing the BIOS from Normal to OC make a difference?
    The GPU is connected using 3 different GPU power connectors from the PSU (Corsair HX1200i), so I assume it should be getting all the required power.
    It probably doesn't have the latest GPU BIOS, I've never updated it. I'll check that!
     
    Any idea why I'm getting the D6 error with this MB while using the GTX 1080? Could it have an issue with older GPUs? This is the 1st time I see something like this.
     
    Thanks!
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    altierijorge
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    Re: EVGA RTX 3080 FTW3 running at PCI-E x4 instead of x16 on EVGA Z690 DARK with Intel i7 2023/02/13 11:26:15 (permalink)
    Where can I find the BIOS for the 10G-P5-3897-KL (LHR)? Will the BIOS of the non LHR FTW3 10GB work?
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    bcavnaugh
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    Re: EVGA RTX 3080 FTW3 running at PCI-E x4 instead of x16 on EVGA Z690 DARK with Intel i7 2023/02/13 11:54:26 (permalink)
    Mine shows in BIOS it's detected in the PE1 as Gen4 x16 as well as in Aida 64 Extreme. Bios 2.08. I have PCIe Slots Dip Switches 2-5 set to Off.
    I have two M2 drives installed. 1st and 3rd slots. Even if I disable the M2 Slots it still shows Gen4x16 in the Bios even after a Power Down.
    What other PCIe Devices do you have installed?
    Also in the Bios is Slot 1 set to Auto are did you select 4?
     
    2x PCIe Gen5 x16 slots - 1x16/8, 1x8
    1x PCIe Gen3 x4 slot (via PCH)
    ❑ PCIe 5.0 Support:
    Low power consumption and power management features
    ❑ SLI and Crossfire Support:
    NVIDIA® SLI® Ready, 2-Way Crossfire
    ❑ Additional Expansion Slots:
    1x M.2 Key-M 110mm Gen4 slot from CPU
    2x M.2 Key-M 110mm Gen4 slot from PCH
    1x M.2 Key-E slot
    1x U.2 port
     
    12. U.2 Port (SFF-8643)
    U.2, originally known as SFF-8643, is a high bandwidth connection specifically engineered for next generation SSDs. U.2 brings PCIe x4 (Gen3) NVMe performance to a 2.5” SSD form factor and provides a solution to potential heating problems that may be present in some M.2 solutions. Port function depends upon BIOS Configuration. Note: SFF-8643 ports are located on the motherboard side; SFF-8639 ports are located on the storage side.
    13. M.2 Socket 3 Key-M 110mm (M.2_1, M.2_2, and M.2_3)
    M.2 is an SSD form factor standard, which uses up to four PCIe lanes and utilizes up to Gen4 speeds, depending upon the device used. Most popularly paired with NVMe SSDs, this standard offers substantially faster transfer speeds and seek time than SATA interface standards. All M.2 devices are designed to connect via a card-bus style connector, secured by bolting into place, and powered by the connector – rather than a dedicated data cable and power cable.
    This slot supports device lengths of 110mm, 80mm, 60mm, and 42mm.
    14. PCIe Slot x16/x8*
    Alder Lake-S processors have 20 PCIe lanes available for routing.
    Up to x16 Gen5 PCIe lanes are pulled from the CPU and shared with the x8 PCIe slot 2 (PE2). Lanes automatically switch from x16/x0 to x8/x8 when the motherboard detects a card in slot PE2.
    * Please see the description for Physical (length) vs Electrical (lanes) on Page 24.
    15. PCIe Slot x8*
    PCIe x16/x8 slots are primarily for video cards. These full-length slots will provide up to 8 lanes of bandwidth to a full-size card, and are backwards compatible with x8, x4, and x1 length cards.
    This slot is limited to a maximum of 8 lanes because it shares bandwidth with the primary PCIe x16 slot 1 (PE1). This slot is primarily recommended for secondary video cards, such as the 2nd card in a SLI configuration, a capture card, audio card, etc.
    * Please see the description for Physical (length) vs Electrical (lanes) on Page 24.
    16. PCIe Slot x4*
    PCIe x4 is a smaller form-factor PCIe card slot. These can be used for low-bandwidth products, such as a PCIe SSD card, capture card, audio card, etc.
    This slot is limited to a maximum of x4 Gen3 CPU lanes, as it shares bandwidth with the third M.2 Key-M (PM3). This slot is primarily recommended for capture cards, audio cards, etc.
    * Please see the description for Physical (length) vs Electrical (lanes) on Page 24.


    * There are two numeric references for PCI-Express: one is mechanical (the physical length on the motherboard), while the second is electrical (the number of PCIe lanes available to the slot from the CPU, PCH, or both).
    PCI-Express was designed to be universal; e.g. you can install x1 devices, such as sound cards or USB controllers, into an x16 slot. Similarly, some applications might only use certain parts of a device (e.g. compute apps), requiring only a single PCIe lane to accomplish its task without affecting performance. This is why there are x16 mechanical slots with an x1 electrical PCIe lane. Using the entire length of a PCIe slot is unnecessary, nor does it cause an adverse effect to use a shorter form-factor bus card in a slot that physically can hold a larger form-factor bus card.
     
    PCIe Slot Breakdown
    PCIe Lane Distribution
    ❑ PE1 – x16 (Gen5, x16 lanes from CPU, x8 shared with PE2)
    ❑ PE2 – x8 (Gen5, x8 lanes from CPU)
    ❑ PE3 – x4 (Gen3, x4 lanes from PCH, x4 shared with PU)
    post edited by bcavnaugh - 2023/02/13 12:46:03

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    altierijorge
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    Re: EVGA RTX 3080 FTW3 running at PCI-E x4 instead of x16 on EVGA Z690 DARK with Intel i7 2023/02/24 09:35:47 (permalink)
    I've tried using the OC and Normal GPU BIOS, also tried flashing the Normal BIOS with the latest version (was the latest already, but just in case) and the issue persists.
    I've updated the MB BIOS to 2.10 and that didn't fix it.
    I have only 2 NVME PCI 4.0 SSD in the M.2_1 and M.2_2 slots installed.
    The GPU in the PE1 slot shows 4x Gen4 in BIOS using the Auto option. I've tried changing it to Gen4 but that didn't fix the issue.
     
    I'll request a RMA for the GPU because of the lanes issue. Also I'll request a RMA for the MB because it doesn't work properly with my old GPU and the PC turns off instead of going to sleep.
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