x99 deluxe ii supports PCI lanes.
x99 deluxe ii supports PCI lanes.
You're working on setting up your old PC for Unraid. You have two Quadro 2000s in slots 1 and 3, a shared M.2 drive in slot 3, and you're aiming to upgrade both cards to X16. You also have a USB controller card with two internal controllers and an NVMe drive on the ASUS add-in board, totaling 40 lanes. You're trying to figure out where to place the NVMe drive and the controller card—either slot 4 or slot 5. You're unsure if some lanes are shared with the chipset or came from it, and you're checking your manual for confirmation.
PCIe16_1 Quadro 2000 PCIe16_2 USB card PCIe16_3 Quadro 2000 PCIe16_5 NVMe drive Consider using any of the U.2 connectors just in case you're curious In this arrangement the USB card operates through the chipset, while the second Quadro can function on either x16 or x8 I'm not comfortable with X99. Ideally the PCIe16_4 port is free and NVMe SSD only requires x4 lanes so there should be sufficient capacity for two x16 GPUs, though it might adjust the PCIe16_2 to x8 if something appears in the remaining x16 slots, that's just a guess. Don't expect noticeable changes compared to the Fermi-based Quadro 2000, even the latest P2000 won't notice a shift from PCIe 3.0 x4 to x8.
this configuration optimizes usb 2.0 performance. i prefer usb 3 drives for better speed, but all my devices need to share a single port. there’s no indication in the manual about any slot sharing pcie16_4—only slot 5 is mentioned, and i’m not using it. the only setup listed for higher than 2 devices is a 3-gpu rig with x16 x16 and x8 slots on slots 1, 3, and 5. i’m considering putting the chipsets to work independently.
PCI-E 2.0 x4 delivers 2 GB/s in both directions. Each USB 3.0 port offers 5 Gbps or roughly 625 MB/s (about 590 MiB/s). In practice, due to packet overhead and other factors, you won’t reach close to 550 MB/s—probably even less. I don’t recall the precise figure, but it’s likely lower than what you mentioned. Even when reading from all four ports simultaneously at full speed, you won’t overload the connection. No need to be concerned. The specific data requirements are detailed in the manual, pages 1-8 (26 of 128) and beyond: https://dlcdnets.asus.com/pub/ASUS/mb/LG...UM_WEB.pdf. The choice between a 28-lane or 40-lane CPU affects this capability.
You're right, I was focusing on USB 2 instead of PCIe 2. That's a bit of a stretch!