ASUS ROG Crosshair X870E Extreme Review: Best AM5 Motherboard of 2025

Built with premium materials, the ROG Crosshair X870E Extreme combines durability, performance, and elegance in a single motherboard.

Hardware by Katmin on Sep 29, 2025

The ROG Crosshair X870E Extreme is one of the most premium motherboards to ever hit the market, priced at $900 before taxes. It aims to showcase the very best of what engineers can accomplish when performance, design, and innovation are pushed to the absolute limit.

Featuring an EATX form factor, reinforced PCB layers, and cutting-edge features, it is built to impress enthusiasts and professionals alike.

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Build Quality and Design

The Extreme is remarkably heavy, weighing about 3kg on its own, and is constructed with an 8-layer PCB reinforced by 2oz of copper. It also comes with a rock-themed backplate equipped with thermal pads to drain excess heat from key components. Being EATX, it is sensibly larger than ATX boards, requiring a bigger chassis for proper installation.

Design-wise, it retains the familiar ROG aesthetic seen in cheaper Hero variants. Still, it carries a more confident and refined finish. Large portions of the board are covered in sanded aluminum, featuring dual-tone contouring around the ROG eye logo that gives it a mineral matte effect. Even the connector covers are made of metal, rather than plastic, contributing to its premium feel.

Unlike many flashy boards, RGB lighting is kept minimal. Instead, the centerpiece is a gorgeous OLED display that is both functional and aesthetic. The OLED can be repositioned to avoid obstructing airflow, and additional RGB headers are included for those who want to customize their setup.

CPU and Chipset Support

The Extreme uses AMD's AM5 socket, paired with the X870E chipset, which supports Ryzen 7000-series through 9000-series CPUs. With 24 PCIe 5.0 lanes from the CPU and additional lanes from the chipset, bandwidth for GPUs and storage devices is plentiful.

VRM and Cooling Performance

We find the same robust VRM solution seen on the Hero and Strix variants: a 20+2+2 phase design delivering up to 2400A of CPU power. This is far more than necessary, even for top-tier CPUs like the Ryzen 9 9950X.

Cooling is handled by dual block heatsinks connected via an 8mm copper heatpipe, each with double thermal pad contact. During stress testing, VRM temperatures stabilized between 55°C and 60°C after an hour, showing excellent thermal efficiency.

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Memory Support

One of the highlights of the Extreme is RAM performance. It supports up to 256GB of DDR5 in a dual-channel configuration, with ASUS NitroPath DM technology enabling speeds of up to 9000MT/s.

This represents a significant leap from the previous limit of 8200 MT/s. Of course, achieving these speeds requires compatible high-performance memory sticks such as Patriot Extreme 5 with Hynix ICs.

Storage Capabilities

There are five M.2 slots for storage, therefore there is a lot of room. There are three CPU-fed slots that support PCIe 5.0 x4 and can transport data at speeds of up to 128 Gbit/s. Each of the two chipset-fed slots runs PCIe 4.0 x4 at 64Gbit/s.

All of the drives are kept cool with high-quality heatsinks and thermal pads. The copper-piped cooling block on the main slot near the CPU gets the most attention.

One drawback is that most slots require screws for installation, unlike some competitors that use latch mechanisms. Only the main CPU-fed slot has a latch.

GPU Support

The Extreme supports single and dual GPU setups. A single GPU runs at PCIe 5.0 x16, while dual setups run at PCIe 5.0 x8/x8, still more than sufficient for modern GPUs. Both slots are reinforced for heavy cards.

However, bandwidth sharing occurs with some M.2 slots. Using them will reduce GPU bandwidth to x8, which is still more than enough for RTX 5090 performance, but reduces long-term future proofing.

Connectivity and Back I/O

The rear I/O is a highlight, providing 180 Gbit/s of USB bandwidth, including two USB 4 ports. An additional 40Gbit/s front panel connector brings the total to 220Gbit/s.

Networking is premium with 10Gb LAN, 5Gb LAN, and WiFi 7 support, offering speeds close to 6Gbit/s. Display outputs include HDMI and DisplayPort via USB4.

The audio solution is outstanding, featuring SupremeFX ALC4082 with 500µF Nichicon capacitors, paired with an ES9219 Quad DAC. Dolby Atmos compatibility makes the movie-going experience even better, making this a great pick for audiophiles and makers.

Cooling and Overclocking Features

There are 8 PWM fan headers, an AIO pump header, a dedicated custom pump header, temperature sensor inputs, and even LN2 cooling switches for people who really want to go all out.

An easy-to-debug LED, onboard buttons, and a full-color OLED display for error codes make troubleshooting easier. There are extra voltage read points for professional overclockers.

OLED Display

One of the most amazing features is the built-in OLED screen. It gives you real-time information about things like CPU speed, temperatures, and error codes, which makes the board both more useful and more stylish.

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Final Thoughts

At $900, the ROG Crosshair X870E Extreme is very pricey, yet it is the best example of ASUS engineering. The Hero has almost 90% of the same functionality as the Extreme, but the Extreme stands out because of its perfect design, new OLED display, and unsurpassed build quality.

It's not about getting the best deal; it's about showing what can be done when performance, craftsmanship, and looks are pushed to their limits. The Hero should be enough for most builders. The Extreme is still the finest option for people who want the best and see their PC as both a powerful machine and a work of art.

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