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X99 Taichi PCI-E Bifurcation? |
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shadowmustic ![]() Newbie ![]() ![]() Joined: 11 Oct 2019 Status: Offline Points: 4 |
![]() ![]() ![]() ![]() ![]() Posted: 11 Oct 2019 at 8:12am |
Hello,
I recently upgraded to 2 new NVMe drives that are working well. The previous drives still work fine for other use cases, so I got a PCI-E NVMe expansion card, but it can only access 1 of the drives. Forum research suggests that this is because the card would need 4X/4X/4X/4X PCI-E bifurcation to see the drives individually. Is it possible to enable this? If so, is there a BIOS version available for the X99 Taichi that supports PCI-E bifurcation? |
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badbri ![]() Groupie ![]() Joined: 20 Feb 2018 Location: USA Status: Offline Points: 415 |
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from Asrock_TSD "About PCI-E bifurcation, Intel 300 series only supports x16 to x8x8. Four x4 only support at HEDT like x299 chipset."
So NO you cannot do 4x/4x/4x/4x with x99 chipset and is why only one drive is seen. If the adapter did 8x/8x then it might work. |
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https://www.passmark.com/baselines/V9/display.php?id=99573335296
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shadowmustic ![]() Newbie ![]() ![]() Joined: 11 Oct 2019 Status: Offline Points: 4 |
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That is unfortunate but understandable if it is a limitation of the platform.
The problem would still be that the BIOS on my board doesn't even have the option for x8/x8 which should at least allow 2/3 drives to be visible. |
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