Pcie 4.0 vs 5.0 - Neatbench

[jokris]

When using Neatbench with motherboard MSI MAG Tomahawk B650 Wifi and 5070 Ti I only get 16.60 frames/sec

All other processes are closed.

This seems very low, compared with https://www.neatvideo.com/download/neatbench in which even 6900 XT gets higher result. In fact, the speed is comparable to 2080 Ti...

Would another motherboard with Pcie 5.0 speed up?
Or is it something else that might affect the result?

[GeoffreyA]

Best to try another GPU benchmark first, and see if, compared against other 5070 Ti users running at PCIe 5 bandwidth, PCIe 4 is a significant bottleneck on your Tomahawk.

[jokris]

I have run GPU-Z.

The Bus interface speed seems very slow at x2 4.0, compared to the potential x16 5.0?

https://i.ibb.co/SX4LGyM4/image-2.png

[GeoffreyA]

Yes, it looks like that PCIe bus is running at a low speed. Optimally, on that board, you should get x16 4.0. What CPU are you using?

[jokris]

9950x

Could it be that I have connected the GPU to the wrong slot?

[GeoffreyA]

That could be it. According to the manual for that motherboard, as well as this review (https://www.hwcooling.net/en/msi-mag-b650-tomahawk-wifi-the-cheapest-of-the-decent-ones-review/), only the first slot, PCI_E1, supports 16 lanes coming from the CPU, whereas the second one has 2 lanes coming from the chipset.

A screenshot from p. 29 of the manual: https://imgur.com/a/V13LClj

[Z2697]

PCI-E "interface" shown in GPU-Z can be downgraded when card is idling.
Use the little question mark button on the side to launch a rendering window.
Not sure about the lanes count, but the version number can be shown downgraded surely as I just tested on my own PC:
https://gpuz.techpowerup.com/25/04/29/nmw.png
https://gpuz.techpowerup.com/25/04/29/ubb.png

[Z2697]

But yeah the more likely case is you plugged it into wrong slot.
The "5.0 vs 4.0" shouldn't be the no.1 bottleneck when you don't have full x16 lanes connection.

[Asmodian]

Not sure about the lanes count, but the version number can be shown downgraded surely as I just tested on my own PC:

The lane count does not change. The lane count is from the slot, or unlikely hardware issues.

[huhn]

it's clearly not the pcie 4 vs 5 because a 2080 ti is pcie 3. put it in the correct slot.

[GeoffreyA]

Jokris, any update on what happened?

[StainlessS]

Not sure about this, but I think that the PCIe slot nearest to the CPU is always (unsure about always) the faster slot.

EDIT: Old thread. (dont need to reply here, just thought that above might be a good observation, assuming correct).