X870e hero and 5090 bandwidth is anyone able to get near 128 GB/s with 3D Mark pci-express feature?

[tyan]

Hi, I would like to check with people who have an x870e hero and a 5090, if they can get close to 128 GB/s in the 3D Mark pci-express feature test with the latest 1512 bios. I was testing my hero, 9950x3d with a 5090 and cl38 8000mhz ram and the max I got is 57.8 GB/s. I have verified with GPU z that my 5090 is running at pci-e 5.0 x16 and rebar is on, i have also turned off gsync, have my ssds in slot 4 and 5 which should not affect the first pci-e slot

I bought a pci-e 5.0 riser from linkup and was testing my pc even without the riser but I was not able to break through the 64GB/s limit. Here is LINKUP's test demo which they used a Gigabyte motherboard:
https://www.youtube.com/watch?v=Y5h_vj5oURU

here is my score:
https://www.3dmark.com/3dm/136026398?

[tyan]

...

[V01DLin]

I got 117.2 GB/s which is near it.

http://www.3dmark.com/pcie/664127

[USERMAC]

Cannot get anywhere close. I did a few runs I do not use a riser cable. 

motherboard defaults settings http://www.3dmark.com/pcie/673679

Motherboard default with  expo 1  http://www.3dmark.com/pcie/673707

[Moriendor]

I have the ASUS ROG STRIX X870E-E but I got curious after reading this thread so ran the 3D Mark benchmark and it ended up at ~57.xxGB/s as well.

I did a Google search that led to a Reddit thread where people explained that it seems to be showing the "one way" speed. The theoretical one way max is 64GB/s so 57GB/s is actually pretty decent.

You can also get it to show the full speed by enabling rBar via nVidia Profile Inspector for the 3D Mark PCIe Express benchmark specifically:

^ After enabling rBar, I got 119.33GB/s in this test (MSI RTX 5090 Liquid SOC on ROG STRIX X870E-E, drivers 576.80, BIOS v1512).