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Which GPU gets bottlenecked by PCI-E 3.0 x8 vs x16 ? Is any of them even bottlenecked ? : r/buildapc
![RX6600 and 6600XT are limited to 8 PCIe lanes not 16. Should specs description show this? Fixed — Micro Center RX6600 and 6600XT are limited to 8 PCIe lanes not 16. Should specs description show this? Fixed — Micro Center](https://us.v-cdn.net/6031942/uploads/2SIL2EZR349P/image.png)
RX6600 and 6600XT are limited to 8 PCIe lanes not 16. Should specs description show this? Fixed — Micro Center
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GeForce RTX 4090 and Core i9-13900K PCIe scaling test shows 2% difference between x16 and x8 modes - VideoCardz.com
![GeForce RTX 4090 and Core i9-13900K PCIe scaling test shows 2% difference between x16 and x8 modes - VideoCardz.com GeForce RTX 4090 and Core i9-13900K PCIe scaling test shows 2% difference between x16 and x8 modes - VideoCardz.com](https://cdn.videocardz.com/1/2023/03/performance-matchup_4k.png)
GeForce RTX 4090 and Core i9-13900K PCIe scaling test shows 2% difference between x16 and x8 modes - VideoCardz.com
![PCI Express Bandwidth Test: PCIe 4.0 vs. PCIe 3.0 Gaming Performance & Limited VRAM Memory Buffers | TechSpot PCI Express Bandwidth Test: PCIe 4.0 vs. PCIe 3.0 Gaming Performance & Limited VRAM Memory Buffers | TechSpot](https://www.techspot.com/articles-info/2396/bench/RSS_1080p.png)
PCI Express Bandwidth Test: PCIe 4.0 vs. PCIe 3.0 Gaming Performance & Limited VRAM Memory Buffers | TechSpot
![PCIe 4.0 and PCIe 3.0 - Difference between x8 and x16 with the fastest cards - Where does the bottleneck begin? | igor´sLAB PCIe 4.0 and PCIe 3.0 - Difference between x8 and x16 with the fastest cards - Where does the bottleneck begin? | igor´sLAB](https://www.igorslab.de/wp-content/uploads/2020/07/Motherboard-CPU-1024x453.jpg)
PCIe 4.0 and PCIe 3.0 - Difference between x8 and x16 with the fastest cards - Where does the bottleneck begin? | igor´sLAB
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