XFX 6800 XT & PCIE Lanes

[eye2eyespy]

Silly Question Maybe...

 

How can I find out if my PCIE lanes which is 16 is running a full capacity?

I have a TRX40 10G (3960X CPU) with 4 (16) PCIE lanes (support x16/x8/x16/x8 mode) because of my case and PSU I have to place the GPU on the last lane away from the CPU.
Will this hurt performance.  

 

The motherboard says that all lanes run at 16??? Not really sure?
 

[fabiosun]

@eye2eyespyfrom our manual:

[eye2eyespy]

That's what I thought, definitely the most help so far on the web. Other forums have been condescending and mean.

 

Just a question, how significant is the loss of performance running out side of the 1st lane?

 

Many thanks 

 

[fabiosun]

Not so much

it is so difficult in normal usage to have all GPU power saturated...maybe in some particles and physicians high simulation softwares..but if you do video editing or rendering is not so important the loss

 

but.....I would change my cabinet if I were as you are now 🙂 🙂

 

[eye2eyespy]

Ok, thank you very much, I will.  Any other advise/tops for getting the most out of my GPU (optimizing)?

 

[fabiosun]

No it doesn't need any tips to be optimised

It seen by default by OSX drivers, we can't do anything more to improve performance

You can use web or a SSDT to have GFX0 shown in your IOREG instead of display0..like a real Mac!

[fabiosun]

On 6/16/2022 at 7:35 PM, eye2eyespy said:

Other forums have been condescending and mean.

https://www.insanelymac.com/forum/topic/352229-xfx-6800-xt-pcie-lanes/

here answers to your question was the most funny thing I have read from many years

 

a lot of confusions! 🙂

 

[eye2eyespy]

Lol take a look a this guy. He told me to get a different case or gpu.

 

https://forums.tomshardware.com/threads/xfx-6800-xt-pcie-lanes.3766524/

 

Appreciate your help. 

[eye2eyespy]

This video was helpful.

 

https://youtu.be/kNvoWrXEHdU

 

Cheers!

[fabiosun]

It is a bit different 

your motherboard slot for GPU are all PCIE 4.0

and your cpu could feed it

different story are 16x,8x,4x and gpu position

in many task performance difference is not so much and you can’t see any speed 

If we talk to have a optimal condition

gpu must be inserted in one of the slot @16x

and in my opinion with a more comfortable cabinet you solve this

i would not change your gpu , it is one of the most powerful and beautiful in the gpu scene…

I would change only with is greater sister (6900 xt)

😂

[Traace]

AFAIK it is not just the PCIe Speed that counts. Slots closer to the CPU should have lower latency than slots further away. But maybe it is neglectable 🙂