GPU comparison · 1080p benchmark
RX 7900 XT 20GB records 41.9% more FPS than RTX 3090 24GB in GPUsed's continuous 1080p benchmark (440 vs 310 FPS). Choose another pair in the full comparison tool if you want to explore a different upgrade.
RX 7900 XT 20GB recorded 440 FPS against 310 FPS for RTX 3090 24GB. These are continuous 1080p benchmark averages, not predicted FPS in any particular game.
RTX 3090 24GB
310Benchmark FPS at 1080p- Our rating
- 72.3 / 100
- Graphics memory
- 24GB
- Released
- September 2020
- GPUsed cards tested
- 158
RX 7900 XT 20GB
440Benchmark FPS at 1080p- Our rating
- 81.7 / 100
- Graphics memory
- 20GB
- Released
- December 2022
- GPUsed cards tested
- 18
Change either GPU in the comparison tool
What does this comparison mean?
The RX 7900 XT has a higher recorded average, but its 20GB is below the RTX 3090's 24GB. The move also changes the graphics software platform. For an existing 3090 workstation or mixed-use system, verify both the project's memory footprint and application support before treating this FurMark lead as evidence of a better replacement.
RTX 3090 24GB has 24GB and RX 7900 XT 20GB has 20GB 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 3090 24GB
The RTX 3090 launched with the Ampere generation in September 2020, carrying 24GB of GDDR6X.
RX 7900 XT 20GB
The RX 7900 XT is a 20GB GDDR6 RDNA 3 card, released in December 2022. The separate XTX model has 24GB.
Release and feature sources: RTX 3090 24GB source · RX 7900 XT 20GB 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.