ASUS ROG Maximus XI Extreme Z390 Gaming Motherboard
Flagship Overclocking Power for 9th Gen Intel Enthusiasts The ASUS ROG Maximus XI Extreme is a flagship E-ATX motherboard built on the Intel Z390 chipset, supporting 9th and 8th Gen Intel Core, Pentium Gold, and Celeron processors on the LGA 1151 socket. Positioned as the performance flagship of ASUS’s Z390 Maximus lineup, this board packs comprehensive cooling zones, extensive M.2 storage, and premium connectivity, making it an excellent choice for overclockers who want the most powerful platform the Z390 chipset has to offer.
Dedicated Onboard Clock Generator for Extreme Overclocking
Unlike standard Coffee Lake boards where major bus frequencies derive from a shared reference clock, the Maximus XI Extreme features a dedicated onboard clock generator that supplies dynamic reference clocks to the CPU cores and major subdomains. This gives overclockers the freedom to extract additional MHz of headroom from the platform that would otherwise be limited by default clocking constraints.
Four M.2 Slots with ROG DIMM.2 Expansion
The board is equipped with four M.2 slots, including a ROG DIMM.2 vertically-installed dual-M.2 expansion card with its own dedicated heatsink, to take full advantage of Intel RAID and NVMe RAID configurations. Fully compatible with NVM Express storage, ASUS’s intelligent caching technology helps favorite games and applications launch at faster speeds.
Comprehensive Water-Cooling and Fan Control
Dedicated water-cooling zones and headers allow for comprehensive monitoring of coolant temperature and flow, giving liquid-cooling enthusiasts precise control over their loop. Revamped 5-Way Optimization intelligently overclocks the system based on smart prediction and thermal telemetry, while Fan Xpert 4 delivers dynamic, responsive system cooling across all connected fans.
High-Speed DDR4 Memory with OptiMem II
With 4 DIMM slots supporting up to 64GB of DDR4 memory at speeds up to 4400MHz, ASUS’s OptiMem II technology improves signal integrity and DRAM overclocking stability. This memory layout is specifically optimized to help enthusiasts push higher, more stable clock speeds for demanding overclocked configurations.
Dual High-Speed LAN and Wi-Fi Connectivity
Networking is handled by an Aquantia 5G LAN controller alongside Intel Gigabit Ethernet, giving users flexible high-speed wired options for competitive gaming or large file transfers. Onboard Intel 802.11ac Wi-Fi with MU-MIMO support and Bluetooth 5.0 rounds out the board’s connectivity, supported by ASUS LANGuard and GameFirst software for optimized network traffic prioritization.
Premium SupremeFX Audio and ROG Styling
Audio is handled by the SupremeFX S1220 8-channel HD codec paired with an ESS ES9023P DAC, delivering 120dB SNR stereo playback and 113dB SNR recording input for high-fidelity sound. A pre-mounted I/O shield, Aura Sync RGB lighting with headers for both standard and addressable strips, and onboard BIOS FlashBack and Clear CMOS buttons round out the board’s premium, enthusiast-focused design.
Why Choose the ASUS ROG Maximus XI Extreme?
This flagship E-ATX motherboard combines a dedicated clock generator, four M.2 slots with ROG DIMM.2 expansion, and dual high-speed LAN with Wi-Fi to deliver an uncompromised platform for 9th Gen Intel processors. Its comprehensive water-cooling zones, premium SupremeFX audio, and extensive overclocking tools make it a standout choice for enthusiasts building a top-tier Z390 gaming system. Brand new, it’s an excellent option for overclockers and power users who want ASUS’s most performance-focused Z390 board without compromise.













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