NVIDIA GeForce RTX 5080 16GB vs NVIDIA GeForce RTX 3090 24GB
Hardware specifications
Compare memory capacity and reported specifications for NVIDIA GeForce RTX 5080 16GB and NVIDIA GeForce RTX 3090 24GB. Comparable speed evidence depends on matching model, runtime, quantization, context and batch; a specification comparison does not establish a speed winner.
| Device | GPU or unified memory | GPU power rating |
|---|---|---|
| NVIDIA GeForce RTX 5080 16GB | 16GB | 360W |
| NVIDIA GeForce RTX 3090 24GB | 24GB | 350W |
Power ratings are not measured whole-system draw. Unified memory is shared with the operating system. Check the exact hardware configuration, artifact size, runtime buffers and KV cache before choosing a device.
Inspect matching benchmark configurations · Evidence and limitations