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PCI-Express 3.0 Current Link Width - x8 (always). I am using a GTX 680 graphics card. If anyone is using nVidia's GTX 6XX or AMD's HD 7XXX graphics cards with this motherboard, please share if you have the same problem. Or do you even have such a problem with other video cards?
 

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PCI-Express 3.0 Current Link Width - x8 (always). I am using a GTX 680 graphics card. If anyone is using nVidia's GTX 6XX or AMD's HD 7XXX graphics cards with this motherboard, please share if you have the same problem. Or do you even have such a problem with other video cards?
I thought I am the only one having the issue. GTX1060 6GB says its PCIe 3.0 @ 8x but 8.0GT/s. My GTX980 and HD6450 says my link speed is 16x. Both in x370 (C6H-1.0.0.6) and b450 (B450F2-1.2.0.0)
 

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WOW. That is all weird because I didn't even know that Crosshair VI Hero was PCI-Express 4.0? Here is mine.

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I have a 3950x CPU and a 1080Ti Video card. To my knowledge though if you use the M2 slot or even one of the other PCI-E slots the graphics becomes x8? Wonder if since I have the 3950x is why my board says it has PCI-E 4.0??? Also to my understanding is that even if at X8 or X16 it doesn't matter. Doesn't change speeds or anything that is noticeable. So you won't get a boost to gaming or anything.
 

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WOW. That is all weird because I didn't even know that Crosshair VI Hero was PCI-Express 4.0? Here is mine.

View attachment 2480031

View attachment 2480032

View attachment 2480033

I have a 3950x CPU and a 1080Ti Video card. To my knowledge though if you use the M2 slot or even one of the other PCI-E slots the graphics becomes x8? Wonder if since I have the 3950x is why my board says it has PCI-E 4.0??? Also to my understanding is that even if at X8 or X16 it doesn't matter. Doesn't change speeds or anything that is noticeable. So you won't get a boost to gaming or anything.
You have PCI-e v. 3.0 and everything works correctly (different from my configuration).
 

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That is all weird because I didn't even know that Crosshair VI Hero was PCI-Express 4.0? Here is mine.
it has with old ryzen's too in some old bios (official), then they removed this feature from bios, PCI-E 4.0 really works on this board, but seems they moved feature to Zen2\Zen3 only, i saw that with Zen2 CPU's. Doesn't work with old zen's
PCI-E 4.0 is a part of on-CPU controller
 

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Yeah but look at the CPU-Z Bus Specs it shows PCI-E 4.0 which is what is weird compared to your picture.
Incorrect information. It's pci-e 3 and even you gpu is pci e 3rd gen
 

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I'm currently waiting for 5600X so I've flashed Pro4 bios to my C6H. Had to raise timings on my RAMs to work (from 14-14-14-34 to 16-16-16-34) otherwise it wouldn't work at 3200MHz.
I have m.2 slot with NVMe for system and additional PCIe is occupied by another NVMe through adapter and that's crippling my graphics card to 3.0 X 8 - I wonder if that's a massive performance hit...
2480103
 

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8GT/S is full speed 16x link PCIE3 speed.

It is concerning that you're only seeing 8x (not 8GT)... I was having a similar issue with my old PC case - the case was actually out of spec enough that when I screwed in the GPU all the way it would report 8 lanes being connected rather than 16. Might be worth re-seating the GPU and trying to screw it in a bit lighter than before?

Regardless, unless you have a 3090 or something I doubt you'd ever be able to tell a difference in gameplay. Even then, with a 1800x your CPU would be the bottleneck long before you PCIE bandwidth to the GPU.

In a ×16 (16-lane) slot:
1.0 8b/10b 2.5 GT/s 2 Gbit/s (250 MB/s) 32 Gbit/s (4 GB/s)
2.0 8b/10b 5 GT/s 4 Gbit/s (500 MB/s) 64 Gbit/s (8 GB/s)
3.0 128b/130b 8 GT/s 7.877 Gbit/s (984.6 MB/s) 126.031 Gbit/s (15.754 GB/s)
4.0 128b/130b 16 GT/s 15.754 Gbit/s (1969.2 MB/s) 252.062 Gbit/s (31.508 GB/s)
 
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8GT/S is full speed 16x link PCIE3 speed.

It is concerning that you're only seeing 8x (not 8GT)... I was having a similar issue with my old PC case - the case was actually out of spec enough that when I screwed in the GPU all the way it would report 8 lanes being connected rather than 16. Might be worth re-seating the GPU and trying to screw it in a bit lighter than before?

Regardless, unless you have a 3090 or something I doubt you'd ever be able to tell a difference in gameplay. Even then, with a 1800x your CPU would be the bottleneck long before you PCIE bandwidth to the GPU.

In a ×16 (16-lane) slot:
1.0 8b/10b 2.5 GT/s 2 Gbit/s (250 MB/s) 32 Gbit/s (4 GB/s)
2.0 8b/10b 5 GT/s 4 Gbit/s (500 MB/s) 64 Gbit/s (8 GB/s)
3.0 128b/130b 8 GT/s 7.877 Gbit/s (984.6 MB/s) 126.031 Gbit/s (15.754 GB/s)
4.0 128b/130b 16 GT/s 15.754 Gbit/s (1969.2 MB/s) 252.062 Gbit/s (31.508 GB/s)
It has no effect now. But it can make a difference. Example: Radeon RX 5500 XT with 4GB on PCI Express 3.0 only systems. In any case, this is not normal, as is Asus's attitude towards the BIOS for the CROSSHAIR VI HERO.
 

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Well I have 6900 XT that will be coupled with 5600X this weekend. However this is just a 'temporary' solution until Zen4 arrives
 
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