![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/Intro-1.jpg)
PCIe 4.0 and PCIe 3.0 - Difference between x8 and x16 with the fastest cards - Where does the bottleneck begin? | igor´sLAB
![Amazon.com: ADT-Link PCIe 4.0/3.0 x8 to PCIE x16 Graphics Card Riser Adapter 16x PCI-e PCI-Express 90 180 Degree (15cm, K83SH-SI 4.0) : Electronics Amazon.com: ADT-Link PCIe 4.0/3.0 x8 to PCIE x16 Graphics Card Riser Adapter 16x PCI-e PCI-Express 90 180 Degree (15cm, K83SH-SI 4.0) : Electronics](https://m.media-amazon.com/images/I/61QA9wkfEAL.jpg)
Amazon.com: ADT-Link PCIe 4.0/3.0 x8 to PCIE x16 Graphics Card Riser Adapter 16x PCI-e PCI-Express 90 180 Degree (15cm, K83SH-SI 4.0) : Electronics
![Amazon.com: M.2 NGFF NVMe SSD to PCIE 3.0 X16/X8/X4 Adapter with heatsink for 1U/2U Server and Low Profile PC : Electronics Amazon.com: M.2 NGFF NVMe SSD to PCIE 3.0 X16/X8/X4 Adapter with heatsink for 1U/2U Server and Low Profile PC : Electronics](https://m.media-amazon.com/images/I/71kCGW-97RL.jpg)
Amazon.com: M.2 NGFF NVMe SSD to PCIE 3.0 X16/X8/X4 Adapter with heatsink for 1U/2U Server and Low Profile PC : Electronics
![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_1440p.png)