Game performance
In the following result overviews I have on the one hand cumulated the average FPS of all cards and in all games and then calculated and compared this still in percent. We can see that the Radeon RX 6600 XT can lose quite a bit on PCIe 3.0, especially in Full HD, although there are one or two games where none of this matters. The older and/or more undemanding the games, the more the lines blur:
If you now look at the percentages, the advantage of the Radeon RX 6600 XT in Full-HD on PCIe 4.0 is about 5.5 percentage points in the average of all games compared to PCIe 3.0. That still brings the card in the upgrade PC to the level of a GeForce RTX 2070 Super, after all.
In WQHD, the card is then only on par with the GeForce RTX 2070 Super on the untrimmed bus, while it is about 3.5 percentage points behind the RX 6600 XT on PCIe 4.0. In both cases, the disadvantage of the RX 6600 XT becomes noticeable at higher resolutions, no matter which PCIe generation was used.
Summary and conclusion
Especially for lower resolutions up to WQHD, this card is a safe bet for upgraders and converters, even if the disadvantage of PCIe 3.0 compared to PCIe 4.0 is a bit more obvious and broader than expected. But the performance is still sufficient at PCIe 3.0 to achieve the desired playability. In some situations, you will have to turn up the quality slider a bit in WQHD, but only if you need extremely high FPS numbers. But then the advantage of the PCIe 4.0 melts further at the only 8 connected lanes.
Yes, there are definitely drawbacks on older systems on PCIe 3.0 and in heavier games like Metro Exodus Enhanced Edition from 2021 as an extreme example. On the other hand, if you play visual lightweights like Necromunda: Hired Gun, you can still measure it in benchmarks as long as FSR is active, but not without FSR. The same goes for Marvel’s Avengers and the run-throughs with and without FSR. The card is also almost too slow to even benefit from SAM in higher resolutions, especially since the maximum possible acceleration in the counter tests turned out very low, if it was measurable at all.
So the bottom line is that the card won’t get overly bored in older systems, which is of course due to its positioning. Indeed, if it were faster, the problems would be far greater. Like this, however, is a smaller losing proposition with shifting fronts. So an older PCIe should not stand in the way of a purchase. Then rather the price, but that was not the topic today.
The card was provided to igorsLAB by AMD under NDA for testing with the condition not to fall below the specified release date for the case of the NDA. There was no possible influence of the manufacturer on the test and the results, nor was there any obligation to publish them.
- 1 - Introduction and Test System
- 2 - Gaming Performance Full-HD
- 3 - Gaming Performance WQHD
- 4 - Gaming Performance with and without FSR
- 5 - Details: Frames per Second (Curve)
- 6 - Details: Percentiles (Curve)
- 7 - Details: Frame Times (Bar)
- 8 - Details: Frame Times (Curves)
- 9 - Details: Variances (Bar)
- 10 - Power Consumption and Efficiency
- 11 - Overview, Averages and Conclusion
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