GPU comparison · 1080p benchmark
GTX 1660 Super 6GB recorded 101 FPS against 87 FPS for RX 590 8GB. These are continuous 1080p benchmark averages, not predicted FPS in any particular game.
RX 590 8GB
87Benchmark FPS at 1080p- Our rating
- 46.3 / 100
- Graphics memory
- 8GB
- Released
- November 2018
- GPUsed cards tested
- 18
GTX 1660 Super 6GB
101Benchmark FPS at 1080p- Our rating
- 48.8 / 100
- Graphics memory
- 6GB
- Released
- October 2019
- GPUsed cards tested
- 108
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What does this comparison mean?
The GTX 1660 Super leads the RX 590 by 14 FPS while carrying 6GB against 8GB. The faster result and larger memory pool belong to different cards, making this a trade-off rather than an upgrade in every respect.
RX 590 8GB has 8GB and GTX 1660 Super 6GB has 6GB 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.
GTX 1660 Super 6GB
The GTX 1660 Super launched in October 2019 with Turing architecture and 6GB of GDDR6. It remains a GTX model rather than an RTX card.
Release and feature sources: RX 590 8GB source · GTX 1660 Super 6GB 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.