Maingear Launches the Ultima 18 with 4K 200Hz Display and RTX 5090 GPU

Maingear Ultima 18 Overview



Maingear’s new Ultima 18 is a no-compromise desktop-replacement gaming laptop, co-developed with Clevo. It’s aimed at elite gamers, content creators, and power users needing top-tier specs in a portable format.

Key Features & Specs

Category Details
Display 18.0" 4K (3840×2400) 200Hz, G-SYNC, 100% DCI-P3, <7ms, 16:10 aspect ratio
CPU Intel Core Ultra 9 275HX (24 cores, 5.4GHz Turbo)
GPU Up to Nvidia GeForce RTX 5090 (Mobile, 24GB GDDR7, 175W TGP)
Memory Up to 192GB DDR5 (4x48GB)
Storage 4x M.2 NVMe SSDs (1x PCIe Gen5, 3x Gen4)
Connectivity 2x Thunderbolt 5, HDMI 2.1, USB-A w/ PD, microSD, 2x 2.5Gb LAN, Wi-Fi 7
Audio 5-point sound system with subwoofer, powered by Sound Blaster Studio Pro 2
Camera 5MP Windows Hello camera with IR & privacy cover
Keyboard Per-key RGB, dedicated Microsoft Copilot key
Battery 98Wh, supports compact 330W adapter and USB-C charging
Software Zero bloatware Windows 11, Control Center, Nvidia Advanced Optimus
Weight 8.8 lbs (3.99kg)
Price Starts at $3,600 USD
Availability Available now at www.maingear.com

Highlights

  • Display: 4K resolution with 200Hz refresh rate and G-SYNC makes it ideal for high-end gaming and pro-grade video work.

  • Performance: Intel Ultra 9 and up to RTX 5090 Mobile give desktop-class performance in a mobile form.

  • Expandability: Up to 192GB RAM and 4 SSDs make it one of the most expandable laptops available.

  • Connectivity: Dual Thunderbolt 5 and Wi-Fi 7 future-proof the device.

  • Design: Metal lid/palm rest, compact charger, and rear/side ports for desk-friendly setups.

Target Audience

  • Hardcore gamers needing extreme refresh rates and GPU horsepower

  • Content creators working with 4K+ video, 3D rendering, or AI workloads

  • Professionals who want desktop-class specs in a travel-ready chassis

Competitive Positioning

Ultima 18 competes with:

  • Alienware m18 R2

  • ASUS ROG Strix Scar 18

  • MSI Titan series

However, it stands out with:

  • Thunderbolt 5 support

  • RTX 5090 (if configured)

  • More RAM & SSD slots than most rivals

  • Sound Blaster-tuned audio and bloatware-free OS

The Maingear Ultima 18 is not for casual users or light travelers. But for those who want desktop power in a premium mobile package, it's arguably one of the most advanced gaming laptops of 2025, with forward-looking features like Thunderbolt 5, Wi-Fi 7, and extreme upgradability.