Ryzen 9 9955HX3D meets RTX 5090 | TUXEDO Stellaris 16 - AMD - TUXEDO Computers

Following the recent landing of the new Stellaris 16 - Gen7 with Intel Core Ultra 9 275HX, the AMD variant, available with either the Ryzen 9 9955HX or 9955HX3D, is now entering the orbit.

Stellaris 16 combines the fastest processors and graphics cards on the market with quiet and powerful cooling in a compact, highly robust all-aluminum chassis for a galactic balance of performance, noise comfort and mobility.

Combined with up to 96 GB of RAM and ultra-fast PCIe 5.0 SSD mass storage, the Linux gaming workstation offers performance from another star, while the maximum approved 99 Wh battery allows roughly 6 hours of outdoor use and the new HDR mini LED display raises image quality to new heights.

Galactically Robust Full-Metal Chassis

As a mobile desktop replacement, the Stellaris 16 strikes the perfect balance between reasonably portable dimensions (357 x 260 x 28 mm | 2.6 to 2.85 kg) and enough space for quieter, more powerful cooling.

In addition to cooler temperatures and lower fan noise, the all-metal housing benefits from a robust design and exceptionally firm hinges while still allowing easy one-handed opening.

For best ergonomics, the Stellaris integrates a full-size keyboard with concave keycaps, a full four-column numpad and large, offset arrow keys, while power and monitor ports at the back ensure clean cable management.

Optimized Cooling for Top Performance or Silent Operation

High performance without the noise: Thanks to its slightly larger chassis, the Stellaris 16 delivers excellent cooling – enabling either lower fan noise during gaming and demanding workloads, or maximum laptop performance that rivals a gaming desktop.

The new triple-fan cooling system spans the full chassis width to accommodate three large 80×12 mm fans, optimizes the airflow and reduces the noise level by eliminating the thermally inefficient side vents. Instead, the entire airflow is now directed entirely through the rear exhaust.

With granular power and fan settings in the TUXEDO Control Center, the Stellaris 16 can be tweaked into a quiet yet fast work/gaming station or into an absolute high-end computing machine with galactic performance.

For even greater cooling during stationary use, the new generation of our liquid cooling docking station »TUXEDO Aquaris« will be available soon.

TUXEDO Aquaris pumps distilled water through a dedicated liquid cooling channel inside the notebook via hoses connected to its rear ports and thereby enhancing the notebook’s internal air cooling system for quieter operation, lower temperatures or maximum CPU performance!

Efficient and Galactically Fast Graphics

Graphics performance of a fast desktop PC in a notebook? Providing great power efficiency and outstanding speed, the NVIDIA GeForce RTX 5070 Ti, RTX 5080 and RTX 5090 accelerate gaming, rendering, and simulations at speeds that only power-hungry desktop GPUs could deliver just a few years ago.

In the Stellaris 16, the RTX 5070 Ti (12 GB GDDR7 VRAM) can be configured with between 60 and 140 watts, the RTX 5080 (16 GB GDDR7) with 80 to 175 watts and the RTX 5090 (24 GB GDDR7) with 95 to 175 watts in order to find the personal sweet spot of performance and fan noise.

Top-Notch Desktop-Level Performance for Work & Play

Powered by desktop-grade technology, the AMD Ryzen 9 9955HX and 9955HX3D offer exceptional processing power. In the Stellaris 16 - Gen7 AMD, both CPUs can be configured with a TDP range from 10 to 130 watts, making them ideal for heavy multitasking, professional video editing, large-scale code compilations, and high-frame-rate gaming.

Each processor features 16 cores capable of handling up to 32 threads simultaneously through Simultaneous Multithreading (SMT), and both can boost up to 5.4 GHz on a single core – matching the performance of the Intel Core Ultra 9 275HX.

The only notable difference lies in their L3 cache sizes: this smaller but ultra-fast memory, compared to standard RAM, provides a performance edge in CPU-limited games – enabling slightly, and sometimes noticeably, smoother frame rates.

While the Ryzen 9 9955HX features 64 MB of L3 cache for excellent gaming performance, the Ryzen 9 9955HX3D even doubles this with 128 MB via 3D V-Cache, which – depending on the game and graphics settings – gives it a very slight to noticeable edge in CPU-limited games (especially in high-refresh-rate e-sports titles).

Both CPUs are based on desktop-class architecture optimized for maximum performance, which results in slightly higher power consumption and shorter battery runtimes compared to the Intel-based Stellaris 16 – Gen7.

As with the graphics cards, CPU performance parameters – such as Power Limits (»PL«) in watts – can be customized via the TUXEDO Control Center to achieve the optimal balance between power usage, thermal output, and fan noise.

Mini LED Premium Display for Exceptional Image Quality

Besides featuring a very bright 500 nits screen (2560x1600) with vibrant colors (100% sRGB) and extremely fast refresh rates (300 Hz), the Stellaris 16 now offers an upgrade to an even superior 1000 nits HDR mini LED display.

The new premium monitor relies on much smaller and brighter light-emitting diodes, of which many more can be installed to illuminate the screen more selectively via 1000 dimming zones and massively increase contrast with perfect blacks using optional »Local Dimming«.

With a peak brightness of 750 nits (SDR) or 1000 nits (HDR) and a matte coating, the mini LED display is particularly suitable for outdoor use and light-flooded interiors, while 100% DCI-P3 color space coverage, 2560x1600 pixels and 300 Hz offer excellent conditions for work and play at the highest level.

99 Wh Battery, 128 GB RAM and Ultra High-Speed PCIe-5.0 SSD

Desktop replacement with decent mobility skills: Despite being primarily meant as portable desktop replacement, the Stellaris 16 cuts a fine figure when it comes to mobility thanks to its maximum-sized 99 Wh battery for roughly 6 hours websurfing and USB-C charging with up to 140 watts.  

The gaming workstation features high-end storage options in the form of the latest PCIe 5.0 SSD technology (1x M.2 SSD PCIe 5.0, 1x M.2 SSD PCIe 4.0) and up to 96 GB DDR5–5600 RAM for highly demanding projects.

After removing the bottom case, both M.2 SSDs for up to 8 terabytes of storage are equally accessible for replacement and repairs as two upgradeable RAM slots, the Wi-Fi module and the internally screwed battery.

HDMI 2.1, Mini DisplayPort and 2x USB-C

The Stellaris 16 fits uncluttered into the working environment with rear connections for monitors, docking station, power supply and the optional external »TUXEDO Aquaris« water cooling system and connects up to 4 high-res monitors via HDMI 2.1, 2x USB-C and Mini DisplayPort.

While 3x USB-A ensures compatibility with traditional peripherals, both USB-C ports allow charging the notebook via USB-C with up to 140 watts for frequent transportation using a lightweight travel power supply unit.

Available for Pre-order Now, Shipping Starts End of July

Like all TUXEDO notebooks, the Stellaris 16 - Gen7 ships with full Linux support, including Linux-trained customer support, pre-installation of all drivers, in-house developed software, cloud-based services and in-house Linux distribution »TUXEDO OS« (alternatively: Ubuntu or Kubuntu) with optional full disk encryption and on request also with Windows 11.

The base configuration with the 500 nits IPS display, AMD Ryzen 9 9955HX, NVIDIA GeForce RTX 5070 Ti, 2x 8 GB DDR5–5600-RAM, a 500 GB Samsung 980 SSD and TUXEDO OS starts at 2.499 EUR (incl. tax for German customers only) and around 2.100 EUR for customers outside Europe (excl. tax).