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ASUS TUF Gaming GeForce RTX 5080 OC 16GB
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Overview
The ASUS TUF Gaming GeForce RTX 5080 OC is a triple-fan partner card built on NVIDIA's GeForce RTX 5080: Blackwell with 10,752 CUDA cores and 16GB of GDDR7 on a 256-bit bus, for up to 960 GB/s. ASUS runs it at 2,700 MHz boost out of the box and 2,730 MHz in OC mode, against NVIDIA's 2,620 MHz reference figure. It is aimed at 4K gaming with DLSS and at 1440p at high refresh rates.
It measures 348 x 146 x 72 mm and is 3.6 slots thick, with one 16-pin power connector and an 850W power supply recommendation from ASUS. NVIDIA's reference total graphics power for the RTX 5080 is 360W; ASUS does not publish a separate figure for this model. Cooling uses three Axial-tech fans, a large vapor chamber and a phase-change GPU thermal pad, and the card has dual BIOS (Performance and Quiet), military-grade TUF components and a diecast shroud with an aluminum backplate. Outputs are two HDMI 2.1b and three DisplayPort 2.1b, and the ARGB lighting works with Aura Sync.
For local AI, 16GB holds 8B models at 8-bit and 12B to 14B models at 4-bit to 6-bit with a decent context window. A 32B model at 4-bit needs around 20GB and will not fit entirely. CUDA support is broad, so PyTorch, llama.cpp, Ollama and most other AI tools run on it directly.
Specifications
| GPU | NVIDIA GeForce RTX 5080, Blackwell |
|---|---|
| CUDA cores | 10,752 |
| Boost clock | Up to 2,730 MHz in OC mode, 2,700 MHz default (NVIDIA reference: 2,620 MHz) |
| Memory | 16GB GDDR7, 256-bit, 30 Gbps |
| Memory bandwidth | Up to 960 GB/s |
| PCIe | PCIe 5.0 |
| Board power | 360W (NVIDIA reference; ASUS lists no figure for this model) |
|---|---|
| Recommended power supply | 850W (ASUS) |
| Power connectors | 1x 16-pin (1-to-3 adapter cable included) |
| Size | 348 x 146 x 72 mm, 3.6 slots |
| Display outputs | 2x HDMI 2.1b, 3x DisplayPort 2.1b (up to 4 displays) |
|---|---|
| Cooling | Three Axial-tech fans, vapor chamber, phase-change GPU thermal pad, 0dB fan stop |
| Card features | Dual BIOS (Performance/Quiet), military-grade TUF components, GPU Guard, diecast shroud, aluminum backplate |
| Lighting | ARGB, ASUS Aura Sync |
| Software features | DLSS 4 with Multi Frame Generation, NVIDIA Reflex, ASUS GPU Tweak III |
| Model | ASUS TUF-RTX5080-O16G-GAMING |
Questions and answers
Still unsure? Visit the help center or message us.
What power supply does the TUF RTX 5080 need?
ASUS recommends 850W for this model, the same figure NVIDIA gives for the RTX 5080, and ASUS bases it on a fully overclocked CPU and GPU. The card takes one 16-pin connector; use a native 16-pin cable from a PCIe 5.0 power supply or the included 1-to-3 adapter for 8-pin cables. Push the 16-pin plug in until it is fully seated with no visible gap, and avoid bending the cable sharply right at the connector.
Will the ASUS TUF RTX 5080 fit my case?
It is 348 mm long, 146 mm tall and 72 mm thick (3.6 slots). Check your case's graphics card length limit, the room above the card for the 16-pin cable and the space below the slot before ordering. ASUS includes a graphics card holder to support its weight.
How is the TUF different from the ROG Astral RTX 5080?
Both use the same RTX 5080 GPU with 16GB of GDDR7 and carry an 850W power supply recommendation. The TUF is smaller (348 x 146 x 72 mm and 3.6 slots, against 357.6 x 149.3 x 76 mm and 3.8 slots) and uses three fans instead of four. The Astral is clocked higher (2,790 MHz in OC mode against 2,730 MHz) and adds Power Detector+ cable monitoring, a thermal map and FanConnect II headers.
Which local AI models fit in 16GB of VRAM?
Roughly, 8B models at 8-bit and 12B to 14B models at 4-bit to 6-bit, with a decent context window. A 32B model at 4-bit needs around 20GB and will not fit entirely.
Can it run CUDA software?
Yes. It supports CUDA, so AI frameworks such as PyTorch, llama.cpp and Ollama, along with CUDA-accelerated rendering and video tools, run on it. NVIDIA's Studio Driver is available for creative applications alongside the Game Ready Driver.
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