Question about NVMe SSD Adapter Cards  

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  1. Posts : 5,893
    Win 11 Pro (x64) 22H2
       #21

    bobkn said:
    Page 15:

    3x PCIe 3.0 x1 slots*
    * PCI_E2 will be unavailable when installing the PCIe card in PCI_E4 slot.

    PCI_E2 and PCI_E4 are both X1 slots. PCI_E5 is the third X1 slot. See p. 25.
    I'm specifically looking at what using the m.2 slots (M2_1 & M2_2) cost. Not what happens when PCI slots are used. That's an entirely different conversation.

    Again, according to what I've seen of your owner's menu - it costs nothing (you don't lose PCIE or SATA ports) when using an m.2 slot on your board. That's my point
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  2. Posts : 4,453
    Win 11 Pro 22000.708
       #22

    sygnus21 said:
    I'm specifically looking at what using the m.2 slots (M2_1 & M2_2) cost. Not what happens when PCI slots are used. That's an entirely different conversation.

    Again, according to what I've seen of your owner's menu - it costs nothing (you don't lose PCIE or SATA ports) when using an m.2 slot on your board. That's my point
    That's correct.

    I had the false impression that my board ran into resource limits if a second M.2 was installed. Nope.

    I may have carried something over from a discussion of a system with a B450 (lower end AM4) motherboard. No M.2 slot on that one. However, IIRC, if a PCI-E X4 slot was used, a couple of SATA ports were deactivated. (The poster wished to use anM.2 drive in an adapter card. Turned out to have the microATX version of the board, which had no X4 slots, and one X16 slot. It wouldn't have been bootable from an NVME drive, regardless.)

    One oddity: my MB only lists PCI-E 3.0 support for its second M.2 slot (the one off the chipset). The X570 chipset is supposed to be capable of PCI-E 4.0, and other X570 boards claim 4.0 support for the second M.2. My MB is a cheap X570 one, but I'm surprised that there's that much of a difference. The fist M.2 slot (off the CPU) gives 4.0 performance with a Sabrent 1TB PCI-E 4.0 X4 drive.
    Last edited by bobkn; 16 Feb 2020 at 01:58.
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  3. Posts : 5,893
    Win 11 Pro (x64) 22H2
       #23

    bobkn said:
    (The poster wished to use anM.2 drive in an adapter card. Turned out to have the microATX version of the board, which had no X4 slots, and one X16 slot. It wouldn't have been bootable from an NVME drive, regardless.)

    This we agree

    One oddity: my MB only lists PCI-E 3.0 support for its second M.2 slot (the one off the chipset). THe X579 chipset is supposed to be capable of PCI-E 4.0, and other X570 boards clain 4.0 support for the second M.2. My MB is a cheap X570 one, but I'm surprised that there's that much of a difference. The fist M.2 slot (off the CPU) gives 4.0 performance with a Sabrent 1TB PCI-E 4.0 X4 drive.

    Don't get me to lying. I can't explain it. And you're on an AMD board so a lot of stuff I think I know comes from an "Intel board" perspective
    My reply in red.
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  4. Posts : 4,453
    Win 11 Pro 22000.708
       #24

    sygnus21 said:
    My reply in red.
    I've mostly done Intel. Before my Ryzen 7 2700X, X470 system, my most recent AMD machine was Socket 939. (Circa 2005.) The main difference I notice is that AMD AM4 CPUs still have pins. Intel has been using LGA (land grid array) chips for quite a while.

    The differences exist at a level beyond my understanding.

    I think I've gone off-topic far enough.
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