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Michael Hoppins

Three-Way AMD GPUs not working anymore.

10 minutes ago, Michael Hoppins said:

The computer was meant to be for a 9 monitor setup for a certain type of work at a news company.

Since this is for professional use you should look at professional hardware.

Both AMD as well as Nvidia sell hardware specifically for this use case.

Not only do those cards support way more displays per card, they also come with extra features such as unifying all displays into one virtual monitor and bezel correction:

https://www.nvidia.com/en-us/design-visualization/solutions/nvidia-mosaic-technology/

https://www.amd.com/en/technologies/eyefinity-professionals

 

With some Displayport hubs it might be possible to connect 9 displays to a single GPU (if it supports 9 displays - consumer cards are usually limited to 3 or 4):

https://www.club-3d.com/en/detail/2409/multi_stream_transport_(amst)_hub_displayportt_1.2_triple_monitor/

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Posted · Original PosterOP

Updated PC's CPU from a Ryzen 5 2600 to a Ryzen 9 3900X and the three way GPU setup needed for the computer stopped working, will now only post with two cards plugged in.

Original Setup:
Ryzen 5 2600
Asus B450-F
48GB RAM
AMD RX 570s (x3)

New Setup:
Ryzen 9 3900X
Asus B450-F
48GB RAM
AMD RX 570s (x3)

The only change has been the CPU, is there any reason for this not to be working anymore?

The image attached is the latest setup. With only the middle one plugged in.

20200220_203513.jpg

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wait so it's only picking up one card now and that's the middle one oddly enough?

 

Maybe try removing all but the first one and then restock from there. Maybe the drivers are messed up or something. 


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Posted · Original PosterOP
3 minutes ago, FloRolf said:

wait so it's only picking up one card now and that's the middle one oddly enough?

 

Maybe try removing all but the first one and then restock from there. Maybe the drivers are messed up or something. 

This image was taken with only the middle one installed, should've make that clear.

The top one will run at 16x when plugged in (or 8x if a second is installed), then when the middle or bottom are installed on their own their will be 4x with a warning light. I've checked all the drivers, updated the bios.

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Posted · Original PosterOP
1 minute ago, Xkillerpn said:

Hello, so b boards dont run multi gpus or if they run its limited. i think you are going to need a X board. 

The same board used to run the three GPUs perfectly until I upgraded the CPU.

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1 minute ago, Xkillerpn said:

Hello, so b boards dont run multi gpus or if they run its limited. i think you are going to need a X board. 

that doesn't make sense, as it worked before swapping the CPU


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1 minute ago, Michael Hoppins said:

The same board used to run the three GPUs perfectly until I upgraded the CPU.

on the odd chance you haven't already, clear cmos?


Bethesda PC:   R7 3700X  -  Crosshair VIII hero  -  Corsair Vengeance RGB 16GB@3.2GHz -  Strix 1070Ti  -  Samsung 860 Evo 256GB  -  WD Blue 2TB SSD -  Lian Li PC-011D  -  H100i RGB Platinum SE  -  Rm650x

CrumpleBox V3:  Xeon X5680  -  Asus X58 Sabertooth  -  DDr3 16GB@1.33Ghz  -  PNY OC GTX 1060 3GB- XFX Ghost HD 7770 -  TT smart RGB 700W  -  

Fractal Design Define C  -  120GB Samsung 850 Pro  -  1TB Hitachi@7200RPM   -  LTT Edition Chromax NH-D15 ?

Perhiperals:  Gateway 900p60 monitor  -  Dell 1024x768@75  -  Logi. G403 Carbon  -  Logi. G502  -  SteSer. Arctis 5  -  SteSer. Rival 110 - Corsair Strafe RGB MK.2

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Looking at the manual (page 9 / ix), I think it is expected for the second slot to run in PCIe-3 4x mode:

https://dlcdnets.asus.com/pub/ASUS/mb/SocketAM4/ROG_STRIX_B450_F_GAMING/E14401_ROG_STRIX_B450-F_GAMING_UM_WEB.pdf

 

The 3rd slot is running of the motherboard chipset at PCIe-2 4x speeds.

I assume that with the 3900x (which introduced a lot of changes with respect to I/O) running a GPU over the chipset (on this motherboard?) is broken.


Desktop: Corsair RM550x | Ryzen R9 3900X | Corsair H100i (NF-F12 fans) | MSI GTX 1080 | 64GB 3600MHz CL16 memory | Asus X470-F Gaming | Samsung 970 EVO | Samsung 830 256GB SSD | 3TB HDD | Corsair 450D | MG279Q

Laptop: XPS15 9560 4K / 512GB

Console: Playstation 4 Pro

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Posted · Original PosterOP
2 minutes ago, mathijs727 said:

Looking at the manual (page 9 / ix), I think it is expected for the second slot to run in PCIe-3 4x mode:

https://dlcdnets.asus.com/pub/ASUS/mb/SocketAM4/ROG_STRIX_B450_F_GAMING/E14401_ROG_STRIX_B450-F_GAMING_UM_WEB.pdf

 

The 3rd slot is running of the motherboard chipset at PCIe-2 4x speeds.

I assume that with the 3900x (which introduced a lot of changes with respect to I/O) running a GPU over the chipset (on this motherboard?) is broken.

So basically if I wanted to keep the 3900x, I've gotta switch to a more powerful board.

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4 minutes ago, Michael Hoppins said:

So basically if I wanted to keep the 3900x, I've gotta switch to a more powerful board.

If I were you I would just contact Asus directly and ask what the exact problem could be and whether it can be fixed with a future bios update.

 

Also, running 3 GPUs on a low-end board is kinda weird already, especially 3 mid-range graphics cards (instead of 1 or 2 high-end ones).


Desktop: Corsair RM550x | Ryzen R9 3900X | Corsair H100i (NF-F12 fans) | MSI GTX 1080 | 64GB 3600MHz CL16 memory | Asus X470-F Gaming | Samsung 970 EVO | Samsung 830 256GB SSD | 3TB HDD | Corsair 450D | MG279Q

Laptop: XPS15 9560 4K / 512GB

Console: Playstation 4 Pro

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Posted · Original PosterOP
4 minutes ago, mathijs727 said:

If I were you I would just contact Asus directly and ask what the exact problem could be and whether it can be fixed with a future bios update.

 

Also, running 3 GPUs on a low-end board is kinda weird already, especially 3 mid-range graphics cards (instead of 1 or 2 high-end ones).

The computer was meant to be for a 9 monitor setup for a certain type of work at a news company.

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Posted · Best Answer
10 minutes ago, Michael Hoppins said:

The computer was meant to be for a 9 monitor setup for a certain type of work at a news company.

Since this is for professional use you should look at professional hardware.

Both AMD as well as Nvidia sell hardware specifically for this use case.

Not only do those cards support way more displays per card, they also come with extra features such as unifying all displays into one virtual monitor and bezel correction:

https://www.nvidia.com/en-us/design-visualization/solutions/nvidia-mosaic-technology/

https://www.amd.com/en/technologies/eyefinity-professionals

 

With some Displayport hubs it might be possible to connect 9 displays to a single GPU (if it supports 9 displays - consumer cards are usually limited to 3 or 4):

https://www.club-3d.com/en/detail/2409/multi_stream_transport_(amst)_hub_displayportt_1.2_triple_monitor/


Desktop: Corsair RM550x | Ryzen R9 3900X | Corsair H100i (NF-F12 fans) | MSI GTX 1080 | 64GB 3600MHz CL16 memory | Asus X470-F Gaming | Samsung 970 EVO | Samsung 830 256GB SSD | 3TB HDD | Corsair 450D | MG279Q

Laptop: XPS15 9560 4K / 512GB

Console: Playstation 4 Pro

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