Asus ROG Crosshair VIII Hero PCIe setup guide for PCIe operation
Asus ROG Crosshair VIII Hero PCIe setup guide for PCIe operation
Hello! I aim to upgrade my PC from a R7 2700X to a R9 3900X. The R7 2700X will be reused with its motherboard in another setup. I’ve explored several motherboards and selected the Asus ROG Crosshair VIII Hero. A challenge arises: I plan to add a NIC supporting 10GbE connectivity later. I found the manual’s section on PCI-E (Chapter 1.1.5) but struggled to understand it. My thought is that adding the NIC might prevent my GPU from running at full speed in PCI-E x16_1 mode. Could I adjust slot configurations or confirm this conclusion? I’m hoping for helpful guidance so I can learn better. P.S. I’ve heard about the MSI Prestige X570 Creation with 10GbE, but I went with the Crosshair VIII Hero for compatibility reasons.
The NIC should draw from the chipset lanes rather than the CPU lanes, based on the PCIe slot you connect it to. Plugging it into the bottom slot ensures it uses chipset lanes and won’t interfere with your GPU lanes. Correctly, only the first two x16 lanes will pull directly from the CPU.
Hello GenDufour, relax, using the full GPU bandwidth is possible when you place it in the first PCIe x16 port. You can also insert your 10Gb NIC into any other PCIe slot, preferably the x1 if available.
Lurick... The ROG Crosshair VIII Hero is built for the highest PCI expansion slot to secure the GPU card, even though that covers the fan on the HERO board. In contrast, the slot below would be more suitable for a GPU card from a design perspective. I thought I could switch to the lower or second larger PCI slot for the video card, sorry for my beginner level and the necro-post.
It would have no effect on temperatures, even with the highest setting and a partially covered fan.