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Galax GeForce RTX 5080 Magic Blade OC specifications and in-depth review

Galax GeForce RTX 5080 Magic Blade OC

Manufacturer: Galax

The Galax GeForce RTX 5080 Magic Blade OC is a high-end graphics card from Galax, based on NVIDIA's Blackwell architecture and manufactured on a 5 nm process with 45,600 million transistors. It ships with 16GB of GDDR7 memory across a 256-bit bus, delivering a maximum memory bandwidth of 960 GB/s at an effective memory speed of 30,000 MHz. The card features RGB lighting and supports up to four simultaneous displays, with a thermal design power rating of 360W.

On the performance side, the Galax RTX 5080 Magic Blade OC operates at a base GPU clock of 2295 MHz, reaching a turbo frequency of 2655 MHz. It carries 10,752 shading units, 336 texture mapping units, and 112 render output units, translating to a texture rate of 892.1 GTexels/s and a pixel rate of 297.4 GPixel/s. The card supports DirectX 12 Ultimate, OpenGL 4.6, OpenCL 3.0, ray tracing, and DLSS, and connects via PCIe 5.0. Display output is handled through one HDMI 2.1b port and three DisplayPort connectors, with no USB-C outputs present. Intel Resizable BAR support and ECC memory compatibility are also included.

Pros
  • Supports up to four simultaneous displays through three DisplayPort and one HDMI 2.1b output, offering flexible multi-monitor setups
  • ECC memory support adds a layer of data integrity useful for compute-oriented workloads
  • Intel Resizable BAR support enables the CPU to access the full VRAM pool, which can improve frame delivery in supported scenarios
  • Ray tracing and DLSS are both supported, enabling hardware-accelerated rendering features in compatible titles
  • 16GB of GDDR7 VRAM on a 256-bit bus delivers 960 GB/s of memory bandwidth, which is substantial for memory-intensive workloads
  • RGB lighting is built into the card for users who prefer a visually customized build
Cons
  • A 360W TDP places significant demands on the power supply and system cooling infrastructure
  • The card does not include air-water cooling, meaning thermal management relies entirely on the air cooler configuration
  • At 316.5 mm in length, installation may be restricted in smaller or mid-tower cases with limited GPU clearance
  • No USB-C output is available, limiting direct connectivity with USB-C or Thunderbolt-based displays
  • XeSS (XMX) is not supported, restricting upscaling options to DLSS only
Who is this for?

This card is well-suited to users running demanding rendering and compute workloads that can take advantage of 16GB of GDDR7 VRAM, 960 GB/s of memory bandwidth, and ECC memory support. Content creators and technical users working with GPU-accelerated tasks will benefit from the DPFP capability and high floating-point throughput. It also fits well in setups requiring multi-display configurations, given its four-output connectivity with HDMI 2.1b and three DisplayPort connectors, and users who want hardware-level ray tracing and DLSS support in compatible applications will find those features readily available.

Who is this NOT for?

The card's 360W TDP makes it a poor fit for users with modest or compact power supply setups, as the system will require robust power delivery and airflow to run it stably. At 316.5 mm in length, it is also not well-suited to small form factor builds where physical clearance is limited. Users who rely on USB-C or Thunderbolt-connected displays will find no direct compatibility here, and those looking for liquid cooling integration will need to look elsewhere, as the card ships with an air-only thermal solution.

Performance:

GPU clock speed 2295 MHz
GPU turbo 2655 MHz
pixel rate 297.4 GPixel/s
floating-point performance 57.09 TFLOPS
texture rate 892.1 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 section of the Galax GeForce RTX 5080 Magic Blade OC centers on a GPU base clock of 2295 MHz that boosts up to 2655 MHz, supported by 10,752 shading units, 336 texture mapping units, and 112 render output units. These figures translate into a texture rate of 892.1 GTexels/s and a pixel rate of 297.4 GPixel/s, while overall compute throughput reaches 57.09 TFLOPS of floating-point performance. The GPU memory operates at 1875 MHz, and the card includes Double Precision Floating Point (DPFP) support, broadening its suitability for workloads that require higher numerical precision.

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 Magic Blade OC is equipped with 16GB of GDDR7 VRAM running across a 256-bit memory bus, with an effective memory speed of 30,000 MHz that yields a maximum memory bandwidth of 960 GB/s. ECC memory support is also included, adding a layer of data integrity for workloads where memory error correction is relevant.

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 Magic Blade OC supports DirectX 12 Ultimate, OpenGL 4.6, and OpenCL 3, covering a broad range of graphics and compute APIs. It includes ray tracing, DLSS, and stereoscopic 3D support, while XeSS (XMX) and LHR are not present on this card. Multi-display technology is supported with a maximum of four simultaneous displays, and Intel Resizable BAR is available for optimized CPU-to-GPU data access. RGB lighting is built in, rounding out the feature set on the hardware side.

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 Magic Blade OC provides a total of four display outputs, consisting of three DisplayPort connectors and one HDMI 2.1b port. There are no DVI, mini DisplayPort, or USB-C outputs on this card.

General info:

GPU architecture Blackwell
Thermal Design Power (TDP) 360W
PCI Express (PCIe) version 5
semiconductor size 5 nm
number of transistors 45600 million
Has air-water cooling ✕
width 316.5 mm
height 140.1 mm

The Galax GeForce RTX 5080 Magic Blade OC is built on the Blackwell architecture, fabricated using a 5 nm process and integrating 45,600 million transistors. It connects via PCIe 5.0 and carries a thermal design power of 360W. The card does not include air-water cooling. Physically, it measures 316.5 mm in width and 140.1 mm in height.

Final Verdict

The Galax GeForce RTX 5080 Magic Blade OC is a specification-dense graphics card built around NVIDIA's Blackwell architecture, and its technical profile reflects that clearly. With 16GB of GDDR7 VRAM delivering 960 GB/s of memory bandwidth, alongside ECC support, DPFP capability, ray tracing, and DLSS, it covers a wide range of both gaming and compute use cases competently. That said, its 360W TDP and 316.5 mm length mean it demands a well-equipped system to run properly, and the absence of USB-C output and liquid cooling will matter to certain users. For those with a capable build and a need for high memory throughput and multi-display flexibility, the Magic Blade OC makes a coherent and well-rounded choice.

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