RX 590 8GB vs RX 7800 XT 16GB

What does this comparison mean?

Moving from RX 590 8GB to RX 7800 XT 16GB increases the recorded result from 87 to 305 FPS and graphics memory from 8GB to 16GB. The uplift is 250.6% in this workload with 8GB more capacity; the benchmark cannot tell us how much of the difference comes from memory rather than the rest of the GPU.

RX 590 8GB has 8GB and RX 7800 XT 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

RX 590 8GB

The RX 590 arrived in November 2018 as a 12nm Polaris refresh with 8GB of GDDR5. It retains a separate identity from the earlier RX 580, despite their similar names and memory capacities.

RX 7800 XT 16GB

The RX 7800 XT combines RDNA 3 with 16GB of GDDR6. It became available in September 2023 alongside the 12GB RX 7700 XT.

Release and feature sources: RX 590 8GB source · RX 7800 XT 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.

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