Galax GeForce RTX 5080 HOF OC Lab Plus

Name: Galax GeForce RTX 5080 HOF OC Lab Plus
Brand: Galax
SKU: 4279

Manufacturer: Galax

The Galax GeForce RTX 5080 HOF OC Lab Plus is a high-specification graphics card from Galax based on NVIDIA's Blackwell architecture, manufactured on a 5 nm process with 45,600 million transistors. It features 57.74 TFLOPS of floating-point performance delivered through 10,752 shading units, making it a technically dense offering in the RTX 5080 lineup. The card includes RGB lighting and supports up to four simultaneous displays, with a physical footprint of 349.4 mm in length and 160 mm in height.

On the memory side, the card is equipped with 16GB of GDDR7 VRAM running across a 256-bit bus at an effective speed of 30,000 MHz, yielding a maximum bandwidth of 960 GB/s. A base GPU clock of 2295 MHz boosts up to 2685 MHz under load, while the 336 texture mapping units deliver a texture rate of 902.2 GTexels/s. Connectivity is handled through one HDMI 2.1b port and three DisplayPort outputs, with support for DirectX 12 Ultimate, OpenGL 4.6, OpenCL 3, ray tracing, and DLSS. The card operates within a 360W TDP and connects via PCIe 5.0, with Intel Resizable BAR support included.

Pros

Supports up to four simultaneous displays through a combination of one HDMI 2.1b and three DisplayPort outputs
ECC memory support adds a layer of data integrity useful in compute-oriented workloads
DLSS and ray tracing support are both present, expanding rendering options
Intel Resizable BAR is included, allowing the CPU to access the full GPU frame buffer for improved data throughput
RGB lighting is built into the card
Double Precision Floating Point (DPFP) support broadens its usability beyond standard graphics rendering

Cons

A 360W TDP places significant demands on system power delivery and case airflow
The card does not include air-water cooling, so thermal management relies entirely on the installed cooling solution
At 349.4 mm in length, the card requires a spacious case with adequate clearance
No USB-C output is available, limiting connectivity options for certain modern displays
XeSS (XMX) is not supported, restricting upscaling options to DLSS only

Who is this for?

This card is well-suited to users who demand high throughput in both graphics and compute tasks, given its 57.74 TFLOPS of floating-point performance combined with Double Precision Floating Point support and ECC memory. Workstation users running GPU-accelerated simulations, 3D rendering pipelines, or machine learning workflows will find the memory bandwidth and data integrity features relevant to their needs. It also fits well in multi-monitor setups, as support for up to four simultaneous displays via HDMI 2.1b and DisplayPort outputs accommodates complex desktop configurations, and DLSS plus ray tracing support makes it a capable choice for users engaged in real-time rendering or visually demanding content creation.

Who is this NOT for?

Users working in space-constrained or thermally limited environments may struggle with this card, as its 349.4 mm length and 360W TDP require a large case and a robust power and cooling setup that not every system can accommodate. The absence of air-water cooling means users in thermally challenging environments must rely entirely on their own case airflow. Additionally, those who depend on USB-C display output will find this card unsuitable, as no such port is available, and users specifically looking for XeSS upscaling support will need to look elsewhere since that feature is not present.

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 section of this card centers on a GPU base clock of 2295 MHz that boosts up to a turbo speed of 2685 MHz, underpinned by 10,752 shading units and 336 texture mapping units (TMUs) that together produce a texture rate of 902.2 GTexels/s. Pixel output is handled by 112 render output units (ROPs), yielding a pixel rate of 300.7 GPixel/s, while floating-point performance reaches 57.74 TFLOPS. GPU memory operates at 1875 MHz, and the card includes support for Double Precision Floating Point (DPFP), broadening its suitability for compute-oriented workloads alongside standard rendering tasks.

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	✓

This card is equipped with 16GB of GDDR7 VRAM running across a 256-bit memory bus at an effective speed of 30,000 MHz, which translates to a maximum memory bandwidth of 960 GB/s. ECC memory support is included, adding a layer of data integrity protection that can be relevant in compute and professional workloads alongside general graphics use.

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

On the software and feature side, this card supports DirectX 12 Ultimate, OpenGL 4.6, and OpenCL 3, covering a broad range of graphics and compute APIs. Ray tracing and DLSS are both supported, as is stereoscopic 3D, while XeSS (XMX) is not included. Multi-display technology is present with support for up to four simultaneous displays, and Intel Resizable BAR is available to help improve data throughput between the CPU and GPU. The card does not feature LHR, and RGB lighting is built in. AMD SAM is not supported; only Intel Resizable BAR applies.

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 card's output configuration consists of one HDMI 2.1b port and three DisplayPort outputs, providing a total of four display connections. There are no USB-C, DVI, or mini DisplayPort outputs on this model.

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	349.4 mm
height	160 mm

This card is built on the Blackwell GPU 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 (TDP) of 360W. The card does not include air-water cooling. Physically, it measures 349.4 mm in width and 160 mm in height.

Final Verdict

The Galax GeForce RTX 5080 HOF OC Lab Plus is a technically dense graphics card that brings together the Blackwell architecture, GDDR7 memory with ECC support, and a broad feature set including ray tracing, DLSS, and multi-display output in a single package. Its 960 GB/s memory bandwidth paired with 57.74 TFLOPS of floating-point performance positions it firmly toward users who need sustained throughput across both rendering and compute workloads. That said, its 360W TDP and 349.4 mm length mean it is best suited to systems purpose-built to accommodate it. For users whose environments and hardware can meet those demands, this card offers a well-rounded and specification-rich option within its category.