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Galax GeForce RTX 5080 Stellar Luna OC specifications and in-depth review

Galax GeForce RTX 5080 Stellar Luna OC

Manufacturer: Galax

The Galax GeForce RTX 5080 Stellar Luna OC is a high-performance graphics card designed for demanding gaming and professional applications. With a base GPU clock speed of 2295 MHz and a turbo boost up to 2685 MHz, it delivers impressive graphical power for modern workloads.

Equipped with 16GB of GDDR7 VRAM and a maximum memory bandwidth of 960 GB/s, this GPU ensures smooth performance even in memory-intensive tasks. Notable features include support for ray tracing, Intel Resizable BAR, and HDMI 2.1b, alongside a robust 360W TDP and Blackwell GPU architecture built on a 5nm process.

Pros
  • Supports PCIe 5.0 for fast data transfer.
  • Equipped with 16GB of GDDR7 VRAM for smooth performance in memory-intensive applications.
  • Supports ray tracing, enhancing visual quality in compatible games and applications.
  • Includes RGB lighting for customizable aesthetics.
  • Can drive up to 4 displays simultaneously for flexible multi-monitor setups.
Cons
  • Does not support USB-C, limiting modern connectivity options.
  • Lacks air-water cooling, which may affect thermal performance under heavy workloads.
  • No DVI or mini DisplayPort outputs, reducing compatibility with older monitors.
Who is this for?

The Galax GeForce RTX 5080 Stellar Luna OC is ideal for gamers and professionals who require high-performance graphics. With its 16GB of GDDR7 VRAM and ray tracing support, it excels in demanding gaming scenarios and GPU-intensive tasks such as 3D rendering or video editing. Additionally, its support for up to 4 displays makes it well-suited for multi-monitor setups, while the inclusion of PCIe 5.0 ensures fast data transfer for modern applications.

Who is this NOT for?

This graphics card may not be suitable for users with limited space or those seeking low-power solutions. With a 360W TDP and no air-water cooling support, it may be less efficient in small, thermally constrained environments. Additionally, the lack of USB-C and older video outputs like DVI or mini DisplayPort may limit compatibility with certain setups, making it less ideal for users with legacy equipment.

Performance:

GPU clock speed 2295 MHz
GPU turbo 2685 MHz
pixel rate 300.7 GPixel/s
floating-point performance 57.74 TFLOPS
texture rate 902.2 GTexels/s
GPU memory speed 1875 MHz
shading units 10752
texture mapping units (TMUs) 336
render output units (ROPs) 112
Has Double Precision Floating Point (DPFP) ✓

The performance of the Galax GeForce RTX 5080 Stellar Luna OC is driven by a GPU clock speed of 2295 MHz and a turbo boost reaching up to 2685 MHz. It achieves a pixel rate of 300.7 GPixel/s and a texture rate of 902.2 GTexels/s, ensuring smooth rendering in high-demand environments. With 10752 shading units, 336 texture mapping units (TMUs), and 112 render output units (ROPs), this card delivers impressive graphics processing power. Additionally, it supports double precision floating point (DPFP) operations, offering enhanced computational accuracy in certain workloads, while the GPU memory operates at a speed of 1875 MHz, further boosting performance.

Memory:

effective memory speed 30000 MHz
maximum memory bandwidth 960 GB/s
VRAM 16GB
GDDR version GDDR7
memory bus width 256-bit
Supports ECC memory ✓

The Galax GeForce RTX 5080 Stellar Luna OC is equipped with 16GB of GDDR7 VRAM, offering an effective memory speed of 30000 MHz. This graphics card boasts a maximum memory bandwidth of 960 GB/s, ensuring fast data throughput for demanding applications. The memory operates on a 256-bit bus width and also supports ECC memory, providing error correction for added reliability in critical tasks.

Features:

DirectX version DirectX 12 Ultimate
OpenGL version 4.6
OpenCL version 3
Supports multi-display technology ✓
supports ray tracing ✓
Supports 3D ✓
supports DLSS ✓
has XeSS (XMX) ✕
AMD SAM / Intel Resizable BAR Intel Resizable BAR
has LHR ✕
has RGB lighting ✓
supported displays 4

The Galax GeForce RTX 5080 Stellar Luna OC offers an array of advanced features, including support for DirectX 12 Ultimate, OpenGL 4.6, and OpenCL 3, ensuring compatibility with the latest gaming and professional applications. It supports ray tracing for enhanced visual realism and offers multi-display technology for setups requiring multiple monitors. The card also includes features like DLSS for improved performance and RGB lighting for customizable aesthetics, while supporting up to 4 displays simultaneously.

Ports:

has an HDMI output ✓
HDMI ports 1
HDMI version HDMI 2.1b
DisplayPort outputs 3
USB-C ports 0
DVI outputs 0
mini DisplayPort outputs 0

The Galax GeForce RTX 5080 Stellar Luna OC offers a range of video output options, including 1 HDMI 2.1b port and 3 DisplayPort outputs, enabling a flexible multi-monitor setup. It does not feature USB-C, DVI, or mini DisplayPort outputs, but provides HDMI connectivity for high-quality video streaming and gaming experiences.

General info:

GPU architecture Blackwell
release date January 2025
Thermal Design Power (TDP) 360W
PCI Express (PCIe) version 5
semiconductor size 5 nm
number of transistors 45600 million
Has air-water cooling ✕
width 348 mm
height 155 mm

The Galax GeForce RTX 5080 Stellar Luna OC is built on the Blackwell GPU architecture and features a 5nm semiconductor size for improved performance and efficiency. With a Thermal Design Power (TDP) of 360W, it is designed to handle high workloads. The card also supports PCIe 5.0 for faster data transfer and boasts a high transistor count of 45.6 billion. Its dimensions are 348mm in width and 155mm in height, and it does not include air-water cooling.

Final Verdict

The Galax GeForce RTX 5080 Stellar Luna OC is a high-performance graphics card tailored for users demanding cutting-edge capabilities in gaming and professional applications. With its impressive 16GB of GDDR7 VRAM and ray tracing support, it excels in rendering complex graphics and multitasking across multiple displays. While it may not be ideal for those with limited space or legacy display setups, it offers a solid foundation for modern, GPU-intensive workloads. Overall, this card is a strong choice for users looking for top-tier graphical power and future-proofing with PCIe 5.0.