PCIE NVMe multiplexer?

Discussion in 'SSDs & Data Storage' started by learners permit, Dec 12, 2019.

  1. learners permit

    learners permit Limp Gawd

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  2. drescherjm

    drescherjm [H]ardForum Junkie

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    Interesting. I wish it was a quad instead of a dual port especially at that price.
     
    Last edited: Dec 13, 2019
  3. cyklondx

    cyklondx Limp Gawd

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    Red Falcon and drescherjm like this.
  4. thesmokingman

    thesmokingman [H]ardness Supreme

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    What do you mean, bifurication? Check it out...

    https://hardforum.com/threads/build...-raid-render-monster.1990145/#post-1044424588

    If you are on gen3, check out the Asrock Ultra Quad, Gigabyte Aorus AIC gen3, Asus Hyper card. The cards linked above turn me off.
     
  5. drescherjm

    drescherjm [H]ardForum Junkie

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    This card says it
     
  6. EniGmA1987

    EniGmA1987 Limp Gawd

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    None of these are really multiplexers though. That would imply that it is taking a PCI-E x4 slot and attaching two drives to it. An NVME takes 4 lanes (typically), and these dual cards require a PCI-E x8 slot so half the slots go to one SSD and half go to the other. Gigabyte's 4 drive version requires an x16 slot so again 4 lanes go to each drive.
     
  7. learners permit

    learners permit Limp Gawd

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    Gonna give it a try to see whats possible in different configurations.
     
  8. Dajinn

    Dajinn [H]Lite

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    Yeah, but those 'features' aren't available unless the BIOS specifically supports bifurcation, if a mobo does not, then a PLX chip must be used, which is essentially a PCIe switch. The lane-age is just arbitrary, if someone made a 4x card you could still theoretically support 2 NVMe drives at 2x bandwidth presumably if it had PLX switching.

    Without googling the 'chipset' too much I'm assuming that's what this PCB does.
     
  9. FLECOM

    FLECOM Modder(ator) & [H]ardest Folder Evar Staff Member

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