F5F Stay Refreshed Hardware Desktop Yes, you can use two PCIe cards together with an NVMe drive on a B450.

Yes, you can use two PCIe cards together with an NVMe drive on a B450.

Yes, you can use two PCIe cards together with an NVMe drive on a B450.

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Aktivieren
Junior Member
14
03-26-2018, 11:05 PM
#1
Hey, Just wondering if this is possible. I am running a server, for which I have a PCIe NIC and a SAS HBA card. Motherboard is MSI b450 Gaming Pro Carbon AC As it stands, if I install both PCIe cards, I lose access to the NVMe drive. Originally I had it in the M2_1 slot, but putting a card in the PCI_E1 slot disables that one automatically, so I moved it to the M2_2 slot...but adding the second card seems to have disabled that slot as well. I understand that this has to do with sharing PCIe lanes, and there are a handful of settings in the bios that seem to allow changing how the various PCIe slots behave, but I admit that this is a bit beyond my understanding. Is there a setting in the bios that I can change that will allow me to use both cards and the NVMe drive simultaneously? Or would that require a new motherboard? If so, is there an AM4 board that would support this with a Ryzen 3 3200g? Right now, that processor is sufficient for my uses, so I don't want to spend money upgrading something that still works fine. Thanks
A
Aktivieren
03-26-2018, 11:05 PM #1

Hey, Just wondering if this is possible. I am running a server, for which I have a PCIe NIC and a SAS HBA card. Motherboard is MSI b450 Gaming Pro Carbon AC As it stands, if I install both PCIe cards, I lose access to the NVMe drive. Originally I had it in the M2_1 slot, but putting a card in the PCI_E1 slot disables that one automatically, so I moved it to the M2_2 slot...but adding the second card seems to have disabled that slot as well. I understand that this has to do with sharing PCIe lanes, and there are a handful of settings in the bios that seem to allow changing how the various PCIe slots behave, but I admit that this is a bit beyond my understanding. Is there a setting in the bios that I can change that will allow me to use both cards and the NVMe drive simultaneously? Or would that require a new motherboard? If so, is there an AM4 board that would support this with a Ryzen 3 3200g? Right now, that processor is sufficient for my uses, so I don't want to spend money upgrading something that still works fine. Thanks

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reily1
Member
226
03-27-2018, 10:24 AM
#2
This shouldn't be accurate. M2_1 and PCI_E1 do not use the same lanes (besides both running directly from the CPU). It might be worth reviewing that setup again.
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reily1
03-27-2018, 10:24 AM #2

This shouldn't be accurate. M2_1 and PCI_E1 do not use the same lanes (besides both running directly from the CPU). It might be worth reviewing that setup again.

L
Livelylouie
Junior Member
8
03-31-2018, 11:57 PM
#3
After reviewing the instructions carefully, it seems your assessment is accurate. I’ll try it again today and observe the outcome. It might resolve, possibly just needing the drive repositioned.
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Livelylouie
03-31-2018, 11:57 PM #3

After reviewing the instructions carefully, it seems your assessment is accurate. I’ll try it again today and observe the outcome. It might resolve, possibly just needing the drive repositioned.