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Old 3 Weeks Ago   #1
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Gtx1080ti Aorus Extreme running at 8x


I have these components

Ryzen 3600 has 24 pcie lanes.
Msi x370 gaming plus on latest beta bios for ryzen 3rd gen cpus
64 gb ddr4 vengeance 3200mhz cl16
Gtx1080ti aorus xtreme gaming
Samsung 970 250gb m.2 drive
2tb sata storage
1tb sata storage
250gb ssd for games
Thermaltake 750w RGB 90plus gold
H100i v2
Asus xonar se pcie

The issue is with the graphics card that is running at 8x speed.

What i have done so far.

Reseated the cpu
Reseated the card
Removed every component
Installed windows again
Installed chipset drivers
Installed graphics drivers
Cleaned the gold contacts of the card with wet wipe
Updated bios of the gpu to latest that is F3
Mobo is running beta bios so eagerly waiting for stable bios that work with ryzen 3rd gen.
Changed the gpu to pcie4x slot .this gives display but somehow the screen is stuck at bios logo and the computer logs on to the desktop.i cannot see anything but bios full screen logo.

Description : The problem started when I opened GPUz to measure the temps of my card while gaming and saw that card was not running at the maximum advertised pci-e 3.0 16x @8gt/s
It was running at 8x speed at 2.5gt/s.
My motherboard has 6 pcie slots and m.2 slot.
Pcie1x is occupied by my sound card.
M.2 slot is occupied by samsung 970 evo ssd
Pcie2x slot is 16x slot where the graphics card is installed.
Rest of the pcie slots are empty.
I have 3 sata cables attached in port 1,2&3.

Does anyone have any ideas why is this card running at 8x instead of 16x speed. Please assist I am puzzle as of now.


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Old 3 Weeks Ago   #2
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Re: Gtx1080ti Aorus Extreme running at 8x

Hi rumour,
From what I know, the Ryzen 3600 has 16 PCIE lanes for PCIE slots and 4 PCIE lanes for M2 and the last 4 PCIE lanes for the AM4 chipset. As you can deduce those x16 lines are shared by all those pcie slots.
By having a sound card in your pcie slot, the pcie lanes are split between your graphics card and your sound card. I believe that is the reason for your card running at x8.
If possible remove the sound card and check. It will be the only way to conform.


Some references
https://community.amd.com/thread/218300
https://us.msi.com/Motherboard/X370-.../Specification


Hope this helps.


Regards,
BLife

Last edited by blife; 3 Weeks Ago at 11:46 AM. Reason: clarity
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Old 3 Weeks Ago   #3
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Re: Gtx1080ti Aorus Extreme running at 8x

Originally Posted by blife View Post
Hi rumour,
From what I know, the Ryzen 3600 has 16 PCIE lanes for PCIE slots and 4 PCIE lanes for M2 and the last 4 PCIE lanes for the AM4 chipset. As you can deduce those x16 lines are shared by all those pcie slots.
By having a sound card in your pcie slot, the pcie lanes are split between your graphics card and your sound card. I believe that is the reason for your card running at x8.
If possible remove the sound card and check. It will be the only way to conform.


Some references
https://community.amd.com/thread/218300
https://us.msi.com/Motherboard/X370-.../Specification


Hope this helps.


Regards,
BLife
Already tested this but can give it another try. Will update.

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Old 3 Weeks Ago   #4
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Re: Gtx1080ti Aorus Extreme running at 8x

I am also facing a somwhat similar issue.

My GPU was working in PCIe x16 Slot when i was using Ryzen 1600

I upgraded to Ryzen 3600 recently and my GPU stopped working on x16 Slot.

It works fine in x8 slot though. RMA'ed the processor but still the same issue.

I am using a Gigabyte X370 Gaming K7 mobo with latest F42a Bios.

I don't even have a M.2 or Sound card.
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Old 3 Weeks Ago   #5
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Re: Gtx1080ti Aorus Extreme running at 8x

Originally Posted by luckyishere View Post
I am also facing a somwhat similar issue.

My GPU was working in PCIe x16 Slot when i was using Ryzen 1600

I upgraded to Ryzen 3600 recently and my GPU stopped working on x16 Slot.

It works fine in x8 slot though. RMA'ed the processor but still the same issue.

I am using a Gigabyte X370 Gaming K7 mobo with latest F42a Bios.

I don't even have a M.2 or Sound card.

Do you have any of the other pcie slots populated? Because Ryzen has only 16 pcie lanes for pcie slots so anything on the pcie slots x1,x4,x8,x16 will eatup those lanes and will make the graphics card run in x8 mode.


Regards
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Old 3 Weeks Ago   #6
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Re: Gtx1080ti Aorus Extreme running at 8x

Originally Posted by blife View Post
Do you have any of the other pcie slots populated? Because Ryzen has only 16 pcie lanes for pcie slots so anything on the pcie slots x1,x4,x8,x16 will eatup those lanes and will make the graphics card run in x8 mode.


Regards
BLife
I dont have anything running in any of the PCIe slots at all. I swapped the processor back to 1600 and it works fine with that.

And its not abt GPU running at what speed. Its about the slots. The GPU doesnt get detected in x16 slot with the 3600 . It gets detected in x8 though
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Old 3 Weeks Ago   #7
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Re: Gtx1080ti Aorus Extreme running at 8x

Originally Posted by luckyishere View Post
I dont have anything running in any of the PCIe slots at all. I swapped the processor back to 1600 and it works fine with that.

And its not abt GPU running at what speed. Its about the slots. The GPU doesnt get detected in x16 slot with the 3600 . It gets detected in x8 though

If you don't mind did you check the bios setting, though it shoudn't change, there is a possibility that pcie settings might have changed during the cpu swap, this is a remote possibility worth checking.



regards,
BLife
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Old 3 Weeks Ago   #8
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Re: Gtx1080ti Aorus Extreme running at 8x

Originally Posted by blife View Post
If you don't mind did you check the bios setting, though it shoudn't change, there is a possibility that pcie settings might have changed during the cpu swap, this is a remote possibility worth checking.



regards,
BLife
I will check now with manually setting PCIe Slot to Gen 3 instead of Auto and see if it works
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Old 3 Weeks Ago   #9
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Re: Gtx1080ti Aorus Extreme running at 8x

I am just waiting on the stable bios to be released. May be this has something to do with beta bios.

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Old 3 Weeks Ago   #10
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Re: Gtx1080ti Aorus Extreme running at 8x

Originally Posted by luckyishere View Post
I will check now with manually setting PCIe Slot to Gen 3 instead of Auto and see if it works
Checked this.. Doesnt work . No display. PC boots up just fine with code AA on Motherboard
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Old 3 Weeks Ago   #11
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Re: Gtx1080ti Aorus Extreme running at 8x

Is ryzen 3600 having only 8x pcie lines


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Old 3 Weeks Ago   #12
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Re: Gtx1080ti Aorus Extreme running at 8x

Originally Posted by rumour View Post
Is ryzen 3600 having only 8x pcie lines


It has a total of 24
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Old 3 Weeks Ago   #13
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Re: Gtx1080ti Aorus Extreme running at 8x

Originally Posted by luckyishere View Post
It has a total of 24
Do sata also consume pcie lanes.

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Old 3 Weeks Ago   #14
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Re: Gtx1080ti Aorus Extreme running at 8x

Originally Posted by rumour View Post
Do sata also consume pcie lanes.

No they do not
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Old 3 Weeks Ago   #15
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Re: Gtx1080ti Aorus Extreme running at 8x

Originally Posted by luckyishere View Post
Checked this.. Doesnt work . No display. PC boots up just fine with code AA on Motherboard

I am really sorry that it didn't work out. As a last option, remove the sata drives and boot from a usb stick and check, If that didn't work then I suggest that you contact Gigabye directly. They might have a better idea.


Originally Posted by rumour View Post
Is ryzen 3600 having only 8x pcie lines




They do have 16x pcie lanes


Originally Posted by luckyishere View Post
It has a total of 24

Yes they do have 24 pcie lanes but only 16 of them are for PCIE slot

---------- Post added at 09:59 AM ---------- Previous post was at 09:51 AM ----------

Originally Posted by luckyishere View Post
No they do not
Unfortunately they do consume PCIE lanes, but they are not shared with pcie slot lanes.



Reference : https://www.guru3d.com/articles_page..._review,2.html



Regards,
BLife
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