PCIe lane arrangement on the motherboard setup
PCIe lane arrangement on the motherboard setup
Confirm your details and clarify the upgrade path. Using Dual GPU with an ASUS ROG STRIX B450-F AM4 board would require switching from PCIe X16 to X8/X8, but compatibility depends on motherboard support and driver availability.
both would line up at position x8, which isn't too significant. remember that the 2080ti only really fills x8 lanes, so with weaker GPUs you won't notice a big slowdown.
The manual outlines how AMD Ryzen processors with Radeon Vega graphics can utilize various PCIe slot configurations. It explains compatibility with different slot types and how bandwidth sharing works among multiple slots, emphasizing the importance of using non-APU chips for optimal performance in x8 or x4 modes.
It should, but there's also no reason to do a dual GPU setup. SLI and Crossfire are dead. In the vast majority of games you'll end up just using one GPU. In the games that do support it, you'll run into all kinds of problems, like microstutters.
Based on your guidance and the manual, it seems this approach should align with the same rules for using Duel NVIDIA GPUs outside of SLI.