ASUS ROG Crosshair X870E Glacial DDR5 Motherboard

The ASUS ROG Crosshair X870E Glacial DDR5 Motherboard features the flagship AMD X870E chipset and AM5 socket support for the latest AMD Ryzen processors with expansive overclocking and performance potential. The E-ATX board supports up to 256GB of DDR5 memory with extremely high overclocked speeds and includes advanced PCIe 5.0 slot support, multiple high-speed M.2 slots with ROG Hyper M.2 and Q-DIMM.2 add-ins, plus dual 10Gb Ethernet and WiFi 7 for ultra-fast networking. The motherboard also delivers a rich I/O suite including multiple USB4 and USB 20Gbps Type-C ports alongside premium cooling, power delivery, and RGB control to fuel elite gaming and creation builds.

Warning: This product contains a button battery
- If swallowed, a lithium battery can cause severe or fatal injuries with 2 hours.
- Keep batteries out of reach of children.
- If you think batteries may have been swallowed or placed inside any of the body, seek immediate medical attention.

Features

---

ROG Crosshair X870E Glacial

The ROG X870E Glacial is a flagship motherboard engineered for uncompromising performance and sophisticated AI. It boasts a robust 24+2+2 power stage design, Dynamic OC Switcher, and Core Flex for next-generation overclocking control. Meanwhile, advanced memory tuning is unlocked through server-grade DRAM enhancement and NitroPath DRAM technology, and storage scales with support for up to seven M.2 drives. Top-tier connectivity includes two 10G Ethernet ports, two USB4® ports, and two USB 20Gbps Type-C® front-panel connectors. This motherboard also features a 3D VC M.2 heatsink and a 5-inch LCD display, along with AI Cache Boost and AI Advisor for smarter, more intuitive system tuning.

• 24+2+2 - Teamed Power Solution
• AI Cache Boost
• ASUS AI Advisor
• Overclocking - Effortless performance boost
• AI Cooling II - One-click fan tuning
• DDR5 - Max. 256 GB, Server-Grade DRAM Enhancement, NitroPath DRAM Technology, AEMP
• ASUS AIO Q-CONNECTOR
• ROG Memory Q-Fan
• PCIe Gen 5 Extensive Gen 5 - x2 onboard M.2 slots, and x2 PCIe 5.0 x16 slots
• ROG Hyper M.2 Card ROG Q-DIMM.2 - x4 M.2 Slots
• WIFI 7
• 3D VC M.2 Heatsink
• EZ PC DIY
• Full Colour 5” LCD Display
• USB4®

Performance

Overclocking

Dynamic OC Switcher

Dynamic OC Switcher maximises CPU performance by letting you set current and temperature thresholds to automatically switch between a manual overclock for heavy multithreaded workloads and Precision Boost Overdrive for single-threaded tasks. The latest Overclocking Load Guard has an enhanced instantaneous current protection mechanism to prevent users from experiencing system crashes during overclocking.

Example: If a user sets thresholds for current and temperature as shown, once CPU current exceeds 35A, the manual overclock engages until the temperature reaches 80°. At all other times, Precision Boost Overdrive will be used.

Core Flex

Core Flex empowers you to smash limits farther than ever before by letting you control clock, power, and thermals in creative new ways.

In its simplest form, you can maximise base clock during lighter loads and set breakpoints to gradually reduce CPU core frequency as temperature or current increases. But the system is extremely adaptable, supporting multiple user-controlled functions that can manipulate power, current, and temperature limits independently so that you can bend CPU performance to your will.

Examples: Base Clock

• For this CPU, the base clock (BCLK) can be stably increased to give an extra boost during lightly threaded workloads.
• At Level 1, the BCLK is set to 104, and it remains at that frequency until the current reaches 35A.
• Then the BCLK drops down to 102, and stays in that Level 2 range up until 55A.
• From that point on, the CPU is using most or all of its threads, so the BCLK scales back to the default 100.

Examples: EDC

• By managing the Electrical Design Current (EDC) in tandem with the total current, this CPU can gain extra performance for short, demanding bursts.
• During lightly threaded workloads, below 35A, the Level 1 EDC is set to a low value, in this case 60.
• As more cores are needed, the EDC is set to 120, which was found by this user to be a sweet spot for performance.
• Once the CPU passes 70A, it is in multi-threaded territory, where it was found that a high EDC of 250 gave optimal performance.

Examples: PPT

• In order to let the CPU cool off if its temperatures go too high, this user constrains the Package Power Target (PPT) when thermals increase. Specifically the short-term value (“Fast”) is used.
• Until the CPU reaches 70°, it can run at full performance, so 350W is set to give plenty of overhead.
• At that point, the power limit reduces to 220W, to let the CPU start reducing heat.
• If it is still under sustained load and keeps getting hotter, then a more stringent 165W PPT is set at 85°.

Asynchronous Clock

For next-level frequency flexibility, the ROG Crosshair X870E Hero BTF features a built-in clock generator that isolates CPU base clock from memory, PCIe, and the Infinity Fabric speed.

Drive CPU performance to its absolute brink while maintaining the stability of related clock domains.

Separate CPU BCLK from other components for a stable overclocking edge.

PBO Enhancement

AMD Precision Boost Overdrive (PBO) pushes the CPU current and voltage budget to opportunistically increase performance.

By aggressively tuning the PBO parameters, AMD’s algorithm can leverage the motherboard’s robust power solution to ramp up performance even higher.

• EDC
• PPT
• TDC
• Fmax
• Scalar

Overclocker's Toolkit

The ROG Overclocker's Toolkit is a powerful set of hardware-level controls to enhance your overclocking experience. Some are quick and easy time savers, while others offer masterful functionality to help you smash benchmarks and break records.

Safe Boot Button

Instantly reset the PC and boot directly into Safe mode.

BCLK Buttons

Adjust the BCLK frequency to improve system performance.

ProbeIt

Includes eighteen integrated measurement points for advanced tuning.

RSVD Switch

Helps the system boot under extreme temperatures (≤ -120°C).

LN2 Mode

Jumper to enable special options and functions for liquid-nitrogen (LN2) overclocking.

BIOS Switch

Switches between BIOS 1 and 2.

Retry Button

Instantly initiates a hard reset with just a press.

Memory

Server-Grade DRAM Enhancement

Thanks to improved signal routing, now enthusiast-grade kits can be driven far beyond the 9 GT/s mark on the ROG Crosshair X870E Glacial (Memory overclocking may vary between CPU series. Please refer to the spec table for detailed inform