PCIe-lanes z390 Asus rog Maximus XI Hero

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theancient1990

Oct 20, 2018
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Could anyone tell me how many PCIE-lanes the Asus Rog Maximus XI Hero have combined with the PCH or motherboard in totality with my upcoming i9-9900k? And does it have a PLX chip which regulate or increase the PCIe-lanes(Correct me). I wish to add a m.2 and 1 ssd with a 2080 ti (the gpu set to x16) Not x8 or x4.

I would like to know, how many pcie-lanes do i get if i want to add a 2080 TI on the first x16 slot which connects to the Cpu. How many Pcie-lanes does the PCH or board offers? Does it offer 24 extra PCIe lanes besides after consuming the x16 pcie lanes from the CPu? This is a quote according to guru3d from their own Review.

"Now you will probably have noticed that many motherboards will offer two or three M2 storage units. So how would that work out with a X16 gen 3.0 processor you wonder? Well, the Z390 chipset offers 24 PCIe Lanes. Here extra 3rd party SATA / USB controllers and thus M2 storage units can draw their bandwidth from. "

Source: https://www.guru3d.com/articles_pages/asus_rog_maximum_xi_hero_review,2.html
 
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1LiquidPC
Should be the same as Z370. I have the Maximus X Hero. There are 16 Gen 3 lanes direct to the CPU. You should have no problem with single GPU setup plans. Your 2080Ti would use the full x16 from the CPU. The rest go through the PCH. Some of those 24 from Intel marketing are used for LAN, SATA, ect. There is a Gen x4 link from the PCH to the CPU via DMI 3.0. A standard SSD will have no issues for speed. If you want to run M.2 or a similar NVMe based SSD at the full x4 bandwidth, you'll have to disable some of the PCI-E slots themselves. I had to do this myself for my Optane 900P. The 3 x1 slots are all disabled to provide full x4 bandwidth to the bottom slot as I'm using HHHL card for optane. I'd assume the XI hero is...
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1LiquidPC

1LiquidPC

Splendid
Oct 11, 2014
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Should be the same as Z370. I have the Maximus X Hero. There are 16 Gen 3 lanes direct to the CPU. You should have no problem with single GPU setup plans. Your 2080Ti would use the full x16 from the CPU. The rest go through the PCH. Some of those 24 from Intel marketing are used for LAN, SATA, ect. There is a Gen x4 link from the PCH to the CPU via DMI 3.0. A standard SSD will have no issues for speed. If you want to run M.2 or a similar NVMe based SSD at the full x4 bandwidth, you'll have to disable some of the PCI-E slots themselves. I had to do this myself for my Optane 900P. The 3 x1 slots are all disabled to provide full x4 bandwidth to the bottom slot as I'm using HHHL card for optane. I'd assume the XI hero is similar. If you add a second 2080 Ti for SLI, you would be running both at X8.
 
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