To potentially make things worse it only uses 4xPCI-e lanes. That's fine in a PCI-e 4.0 capable motherboard and CPU setup (8000MB/s), but on most systems this may be a problem. Then again it is already bottlenecked by the memory interface to begin with.
Just to give an idea, PCI-e 3.0 x4 is the same bandwidth as PCI-e 1.0 x16 or PCI-e 2.0 x8 (4000MB/s).
You can see the impact of dropping to 4000MB/s on the 6600 XT below.
https://www.techpowerup.com/review/amd-radeon-rx-6600-xt-pci-express-scaling/26.html
Just to give an idea, PCI-e 3.0 x4 is the same bandwidth as PCI-e 1.0 x16 or PCI-e 2.0 x8 (4000MB/s).
You can see the impact of dropping to 4000MB/s on the 6600 XT below.
https://www.techpowerup.com/review/amd-radeon-rx-6600-xt-pci-express-scaling/26.html
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