RTX 5080 vs RTX 4090 for local LLMs
The RTX 4090 runs more models well (48 vs 28 of 69), thanks to its 24 GB of memory. On models that fit both, the RTX 4090 should be about 5% faster, because generation speed follows memory bandwidth (1008 vs 960 GB/s).
NVIDIA RTX 5080
- 16 GB VRAM
- 960 GB/s bandwidth
- 28/69 models run well
- $999 at launch
NVIDIA RTX 4090
- 24 GB VRAM
- 1008 GB/s bandwidth
- 48/69 models run well
- $1,599 at launch
Prices are US launch prices (MSRP) for comparison; street prices change daily. Links go to Amazon, where we earn a commission at no cost to you.
Every model, side by side
Best quant that fits and estimated speed at 8K context.
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