GPU comparison · 1080p benchmark
RX 7800 XT 16GB recorded 305 FPS against 133 FPS for RX 6600 8GB. These are continuous 1080p benchmark averages, not predicted FPS in any particular game.
RX 6600 8GB
133Benchmark FPS at 1080p- Our rating
- 53.7 / 100
- Graphics memory
- 8GB
- Released
- October 2021
- GPUsed cards tested
- 55
RX 7800 XT 16GB
305Benchmark FPS at 1080p- Our rating
- 71.9 / 100
- Graphics memory
- 16GB
- Released
- September 2023
- GPUsed cards tested
- 27
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What does this comparison mean?
The RX 7800 XT clears twice the RX 6600's recorded FPS and doubles memory from 8GB to 16GB. This changes tier as well as moving from RDNA 2 to RDNA 3. It is a substantial benchmark upgrade to investigate, provided the exact replacement board suits the rest of the system.
RX 6600 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 6600 8GB
The RX 6600 is an RDNA 2 desktop GPU with 8GB of GDDR6, introduced in October 2021.
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 6600 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.