PCIE 5 vs 4

[Dilen futch]

On my motherboard,I have two PCIE x16 slots, the closest one to the CPU is a GEN 5 and the other one is a GEN 4 I am currently using the Hyte Y70 with their GPU riser that is GEN 4 and using a 4090. Since my riser and GPU is GEN 4, am I going to possibly have issues in the slot labeled GEN 5 or is there anything I need to do?

Specs:

• CPU: AMD Ryzen 9 9950X3D

• CPU Cooler: Asus ROG Ryujin III ARGB Extreme

• Motherboard: ASUS ROG STRIX X870-A GAMING WiFi (AM5)

• RAM: 96GB Corsair Dominator DDR5-6600

• Storage: Samsung 990 Pro 4TB + 970 Evo 1TB

• GPU: MSI RTX 4090 (carried over from old build)

• PSU: 1200W be quiet! Platinum (also carried over)

• Case: HYTE Y70

[Eigenvektor]

10 minutes ago, Dilen futch said:

Since my riser and GPU is GEN 4, am I going to possibly have issues in the slot labeled GEN 5 or is there anything I need to do?

No. PCIe is backwards compatible. The card will run fine in a PCIe 5.0 slot, just as it would also run in a PCIe 3.0 slot.

 

~edit: also note that while the second slot is physically x16, it's only wired for x4.

 

https://rog.asus.com/motherboards/rog-strix/rog-strix-x870-a-gaming-wifi/spec/

See "Expansion Slots"

Quote

AMD X870 Chipset
1 x PCIe 4.0 x16 slot (supports x4 mode)

[RONOTHAN##]

6 minutes ago, Dilen futch said:

am I going to possibly have issues in the slot labeled GEN 5 or is there anything I need to do?

Since the GPU is Gen 4, no.

[Blue4130]

19 hours ago, Dilen futch said:

On my motherboard,I have two PCIE x16 slots, the closest one to the CPU is a GEN 5 and the other one is a GEN 4 I am currently using the Hyte Y70 with their GPU riser that is GEN 4 and using a 4090. Since my riser and GPU is GEN 4, am I going to possibly have issues in the slot labeled GEN 5 or is there anything I need to do?

 

 

Some people have issues with risers and pcie non-native gen. If you have any issues, go into the bios and change the slot from Auto to manually set speed of Gen 4.