Using the best motherboards with the AMD Ryzen 9 5900X is a sure way to get as much performance from the 12-core processor as possible. This CPU requires a 500-series motherboard, which is why we've rounded up some of the best X570 and B550 boards around.
To make the most of your Ryzen 5900X, it's best to use an X570 motherboard. Boards with this AMD chipset usually come with better components and features, and the ASUS ROG Strix X570-E is a great choice. It has great power delivery for stable overclocking, PCIe 4.0 support, high-quality components, Wi-Fi 6, and Gen 4 M.2 slots capable of unidirectional transfer speeds up to 64GB/s, rapid LAN ports, and plenty of RGB lighting options to boot.
This GIGABYTE motherboard isn't quite as advanced as our other X570 recommendations, but it's still worth considering. The B550 AORUS Elite V2 is compatible with the latest 5000 Series processors, supports PCIe 4.0, comes with a decent VRM setup, 2.5Gb LAN, and other highlight features.
For those of you who prefer to build more compact PCs, you will need a Mini-ITX motherboard. This ASUS ROG Strix X570-I is a solid foundation for such a build and the Ryzen 9 5900X processor. It's got an 8+2 phase delivery with active VRM cooling alongside active chipset cooling. There's also PCIe 4.0 and plenty of other features.
If you want X570 but fear spending a little too much of your budget, there's always the ASUS Prime X570-P, which has more of a standard design and feature list. Still, this motherboard comes rocking metal VRM heatsinks, PCIe 4.0 support, and high-quality components.
This is the big one. The ASUS ROG X570 Crosshair VIII Formula sounds like a monstrous motherboard, and that's because it is. It's actually complete overkill for most systems but will work well with the Ryzen 9 5900X. Highlight features include high-quality components for stable overclocking, as well as a heatsink block that can be connected to your custom water-cooling loop. It's quite literally insane.
Choosing the best 500-series motherboard
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The motherboard is the heart of your PC, connecting all your components and providing power to the processor, GPU, and beyond. It also determines what CPU you can use. The Ryzen 9 5900X isn't a super-demanding CPU, which allows you to use an A520, B550, or X570 chipset-touting motherboard.
Our top pick for the Ryzen 9 5900X is the ASUS ROG Strix X570-E, which comes with super-fast LAN ports and PCIe 4.0, thanks to the X570 chipset from AMD. It's not the most affordable, but will easily handle even the most powerful Ryzen 9 processor.
If you want to save a little but still enjoy all the benefits of X570, the ASUS Prime X570-P is a great second choice, coming with PCIe 4.0 support, high-quality components, and a great BIOS at a more affordable price. Check out our roundup of the best motherboards for more.
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Rich Edmonds was formerly a Senior Editor of PC hardware at Windows Central, covering everything related to PC components and NAS. He's been involved in technology for more than a decade and knows a thing or two about the magic inside a PC chassis. You can follow him on Twitter at @RichEdmonds.