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ASUS Prime GeForce RTX 5080 16GB Graphics Card: specs and who it suits
A 2.5-slot GeForce RTX 5080 card with 16GB GDDR7, PCIe 5.0, three Axial-tech fans and a vapor chamber. What the specs mean and what to check for fit.
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The ASUS Prime GeForce RTX 5080 (PRIME-RTX5080-16G) is a desktop graphics card built on NVIDIA's Blackwell architecture. It is an add-in card for gaming PCs and creative workstations, and it is designed to fit into smaller cases as well as full towers. This page covers what the main specifications mean and what to confirm before fitting one.
Blackwell, GDDR7 and DLSS 4
The card carries 16GB of GDDR7 memory on a 256-bit bus. Memory size and bus width affect how much texture data the GPU can hold and how fast it can reach it, which matters most at high resolutions. ASUS lists support for resolutions up to 7680 x 4320 and a PCI Express 5.0 interface. PCIe 5.0 doubles the bandwidth of PCIe 4.0 on paper, though most games today are not limited by it. The card works in older slots, typically at that slot's speed.
DLSS 4 is NVIDIA's AI-based upscaling and frame-generation technology. In supported games, it renders fewer pixels and reconstructs the rest, which typically raises frame rates.
Boost clocks
The boost clock is the speed the GPU can reach under load. ASUS lists 2617 MHz in default mode and 2640 MHz in OC Mode. OC Mode is a software profile that raises clocks slightly, and the difference is small.
Cooling design
The card uses a 2.5-slot design, which means it takes up the space of two and a half expansion slots, and three Axial-tech fans. ASUS says the fans have a smaller hub that allows longer blades, plus a barrier ring that increases downward air pressure. The shroud, heatsink and heat pipes are arranged so the fans can take advantage of airflow from a case's side-panel ventilation.
Two further features are named:
- Vapor chamber: a flat sealed plate that spreads heat quickly from the GPU to the heatsink fins.
- Phase-change thermal pad: ASUS uses this between the GPU and the cooler. It softens as it warms to fill small gaps, and the aim is better heat transfer and reliability under heavy load.
Small-form-factor builds
ASUS labels the card "SFF-Ready," meaning it is designed to work in small-form-factor cases. The listing gives about 12.0 x 5.0 x 2.0 inches and 1.8 lb. Even so, it is a large card, so check the case's maximum card length, thickness and airflow.
Outputs
The card has three DisplayPort outputs and an HDMI output, enough for a multi-monitor setup or a monitor plus a television.
Who it suits
It suits people building or upgrading a PC for high-resolution gaming, content creation or AI-assisted applications that use the GPU, and who want a card that can go in a compact case.
What to check before you buy
- Case clearance: compare the card's length and 2.5-slot thickness with your case's limits.
- Power supply: high-end graphics cards need a suitably rated power supply and the correct power connector. Check the figures in ASUS's documentation.
- Slot and motherboard: it fits a PCIe x16 slot; confirm nothing else blocks the neighbouring slots.
- Airflow: good case ventilation matters for any large card.
- Monitors: match the card's outputs to your displays and cables.
The short version
- Desktop graphics card with NVIDIA Blackwell architecture, 16GB GDDR7 and a 256-bit bus.
- PCIe 5.0, DLSS 4 support, 2617 MHz default and 2640 MHz OC Mode boost clock.
- 2.5-slot design with three Axial-tech fans, a vapor chamber and a phase-change thermal pad.
- Labelled SFF-Ready for small-form-factor builds.
- Three DisplayPort outputs and one HDMI.
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