GPU comparison · 1080p benchmark
RTX 4090 24GB records 15.4% more FPS than RTX 5080 16GB in GPUsed's continuous 1080p benchmark (621 vs 538 FPS). Choose another pair in the full comparison tool if you want to explore a different upgrade.
RTX 4090 24GB recorded 621 FPS against 538 FPS for RTX 5080 16GB. These are continuous 1080p benchmark averages, not predicted FPS in any particular game.
RTX 4090 24GB
621Benchmark FPS at 1080p- Our rating
- 92.2 / 100
- Graphics memory
- 24GB
- Released
- October 2022
- GPUsed cards tested
- 127
RTX 5080 16GB
538Benchmark FPS at 1080p- Our rating
- 87.7 / 100
- Graphics memory
- 16GB
- Released
- January 2025
- GPUsed cards tested
- 28
Change either GPU in the comparison tool
What does this comparison mean?
The RTX 4090 leads the newer RTX 5080 in this continuous benchmark and offers 24GB rather than 16GB. A 4090 owner should not treat the next generation's 80-class name as an automatic upgrade. Establish any required Blackwell feature separately, especially if the existing workload needs more than 16GB of graphics memory.
RTX 4090 24GB has 24GB and RTX 5080 16GB has 16GB of graphics memory. Memory capacity, board dimensions, power connectors and the price of a particular used card are separate from this benchmark. Compare the exact item before deciding whether to upgrade.
The two GPUs in context
RTX 4090 24GB
The RTX 4090 launched in October 2022 with Ada Lovelace architecture and 24GB of GDDR6X.
RTX 5080 16GB
The RTX 5080 is a 16GB Blackwell desktop model. NVIDIA documented its launch in January 2025.
Release and feature sources: RTX 4090 24GB source · RTX 5080 16GB source.
How the figures are compared
Both FPS figures come from the owner-supplied GPUsed benchmark dataset. GPUsed reports a continuous FurMark run at 1080p for its physical-card checks. The percentage compares the higher model average with the lower one using the original FPS values. Our rating uses a compressed scale, with the fastest GPU at 100; it is separate from the percentage difference. A benchmark result does not predict gaming FPS.
GPUsed reports its physical-card checks typically last 30 to 60 minutes while temperature and stability are checked. The owner supplied the model-level FPS workbook on 2 October 2026; this benchmark dataset was last reconciled 3 October 2026. Historical cards tested are separate from the number of FPS runs behind a model average. Full benchmark method.