# Best Motherboard for RTX 5090 > Compare X870E and B850 AM5 motherboards for an RTX 5090 build by slot layout, M.2 expansion, power delivery, networking and upgrade needs. This context describes the Cloudzat canonical page at https://cloudzat.com/best-motherboard-for-rtx-5090/. Current or last-verified Amazon price and image status belongs on the canonical page and is intentionally not frozen here. ## Primary source - [Best Motherboard for RTX 5090: X870E vs B850](https://cloudzat.com/best-motherboard-for-rtx-5090/index.md): Clean Markdown version of the full buyer guidance. ## Related Cloudzat guidance - [RTX 5090 Build](https://cloudzat.com/rtx-5090-build/) - [Best CPU for RTX 5090](https://cloudzat.com/best-cpu-for-rtx-5090/) - [Best PSU for RTX 5090](https://cloudzat.com/best-psu-for-rtx-5090/) - [Best Case for RTX 5090](https://cloudzat.com/best-case-for-rtx-5090/) - [Best CPU Cooler for RTX 5090 Build](https://cloudzat.com/best-cpu-cooler-for-rtx-5090/) - [Best RAM for RTX 5090](https://cloudzat.com/best-ram-for-rtx-5090/)