X570 lanes bandwidth requirement (needs three NVMe Gen 4 drives plus using the lower PCIe lane also)
X570 lanes bandwidth requirement (needs three NVMe Gen 4 drives plus using the lower PCIe lane also)
Using Aorus X570 Xtreme, I'm facing a concern: I need to purchase three 980 Pro NVMe drives as soon as they become available. Their speeds are sufficient to nearly reach the maximum of four PCIe lanes for Gen4. The issue is clear—two high-performance 980 Pros connected to the chipset will share this limited bandwidth with the CPU, potentially slowing both drives and any other devices using the same interface. Regarding the PCIe16 slot, inserting a sound card there is possible, though I'm uncertain if it will interfere with the bottom PCIe lane. Reading some user comments suggests that filling all three NVMe slots might lock out the lower PCIe lane, which would be a significant drawback. The manual provided should clarify these details.
It seems like you're considering the upcoming NVIDIA 3080 Ti or its Titan variant. You're thinking about getting full 16 PCIe Gen 4 lanes, which could prevent bottlenecks and allow better performance compared to splitting the GPU into two parts. I understand you're okay with a slight performance hit from shared bandwidth but want to avoid that. The main concern is whether the lowest PCIe slot will still be available if all M.2 slots are in use—especially important for your audio needs.
The manual clearly states there are no restrictions. The techpowerup review mentioned that nvmes take up the slot, which was confusing for me.
They probably took the details from another source and made mistakes. The text even refers to something specific.