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Z590-E: ASUS RTX4090 stuck in PCIE 3.0 mode

rozak1968
Level 7
Hello,

I installed my just arrived TUF-4090-GAMING-O24 *in my Rog Strix Z590-E PCIE4_1 slot and the card is stuck in PCIE 3.0 x16 mode.
I have i9-11900K with a Samsung 980 Pro installed in M2_1 slot. Drive reports running at PCIE 4.0 x4 mode.
No other PCIE cards installed. Only two NVME drives at M2_3 and M2_4.
Latest BIOS (1402) on board and latest drivers everywhere. Tested with GPU-Z, AIDA64 and HWinfo64. All report the same.

I have already performed a BIOS reset and loaded optimized defaults in BIOS. No change.

Resizable bar is on and reported as active.

OS is Windows 11 22H2, latest patches.

Otherwise the card seem to work fine.

Any idea anyone?
15,811 Views
81 REPLIES 81

Today I bought new RTX 4070 Ti and have the issue. Maximum speed is pcie 3.0 x16. Confirmed with 3DMark pcie feature test - 12.5 GB/s.

Asus TUF Gaming Z590 Plus Wifi (BIOS 1601)
Asus TUF Gaming RTX 4070 Ti OC

EDIT: Just found there is a new BIOS for my mobo (1801), flashed it, problem solved. 😄

84toli
Level 8

i keep having same issue sometimes on x670e Gene and this all started happening when i disabled thunderbolt. x16 3.0 and gpu stuck at 825mhz