Maingear Launches Ultima 18″ Gaming Laptop with 4K 200Hz RTX 5090

Key Takeaways

1. The Maingear Ultima 18 features an Intel Core Ultra 9 processor and optional Nvidia RTX 5090 GPU, aimed at providing desktop-level performance.
2. The laptop includes a high-refresh-rate 4K display, but lacks a dual-mode setting and has a maximum refresh rate of 200Hz.
3. It supports up to 192GB of dual-channel DDR5 RAM and has space for four M.2 SSDs, enhancing upgradability and expandability.
4. Weighing 8.8 lbs, the Ultima 18 has a robust design and features a 98WHr battery, which may affect portability.
5. Maingear’s laptops are sourced from original equipment manufacturers, meaning similar models might be available from other brands with slight differences.


Maingear has unveiled a new premium gaming laptop that claims to deliver desktop-level performance and connectivity. The American company aims to produce robust custom systems suitable for both workspaces and gaming environments. The Ultima 18 is set to uphold this tradition, featuring an Intel Core Ultra 9 processor and the option for an Nvidia RTX 5090 GPU. Although it is on the heavier side, the 18-inch laptop boasts a high-refresh-rate 4K display. The starting price for the Ultima 18 is $3,599, with customization options available on Maingear’s website.

Similarities with Competitors

Customers might notice that the latest Maingear laptop shares features with the newly launched Razer Blade 18. Both laptops are powered by the 24-core Core Ultra 9 275HX CPU, making it one of the most powerful mobile processors available. They also both come with a 4K 3840×2400 resolution display and a 16:10 aspect ratio. However, the Ultima 18’s screen does not have a dual-mode setting and is limited to a refresh rate of 200Hz. For gamers looking for competitiveness, Maingear promotes a respectable response time of under 7ms. In contrast, the 2025 Blade 18 is slightly lighter at just over 7 lbs.

Upgradability and Expandability

When it comes to upgrades, the Ultima 18 stands out with limited competition. This is the first laptop from Maingear to feature dual-channel DDR5 memory, allowing users to install as much as 192GB of low-latency RAM. Additionally, the chassis has space for four M.2 SSDs, including one PCI Express 5.0 slot.

The aesthetic of the Maingear device showcases a rugged, industrial design, heavily incorporating metal materials. Gamers may enjoy the keyboard, which offers per-key RGB lighting effects that also illuminate its rear. Unlike some of its rivals, the Ultima 18 includes rear connectivity options, featuring dual 2.5Gb LAN ports. Other notable features include two Thunderbolt 5 ports and compatibility with WiFi 7.

Weight and Battery Performance

With high-end specifications and a reinforced casing, the 18-inch laptop weighs a substantial 8.8 lbs. The battery life could influence how frequently the Ultima 18 is moved from stationary locations. Maingear has equipped the laptop with a 98WHr lithium polymer battery. Users can recharge the laptop using a compact 330-watt adapter or via USB-C.

It’s important to note that Maingear, similar to brands like Schenker/XMG and Eluktronics, does not independently design its laptops. Instead, it acquires mostly complete systems from original equipment manufacturers like Clevo and Tongfang. This means that other companies might offer essentially identical laptops to the Ultima, albeit with minor variations in design, specifications, and pricing.

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