• Procesor AMD RYZEN 7 3800X 3.9/4.5 GHz, 8C/16T, Socket AM4 
• DDR4 mem 32GB (2x16GB)
I can not run more than 2 GPU on that mobo. 
Settings to run only 2 GPU : pbs pcie X16 =2x8 on Gen3 
or  4x4 on Gen1
Any suggestion ? Link to see how to set BIOS for this mobo ? I have no idea any more.
             
            
               
               
               
            
            
                 
                 
              
           
          
            
            
              usually the standard settings for a mobos BIOS are : 
4G encoding enabled 
PCIe bus set to  GEN 2 
secure boot off ( sometimes it causes problem with not loading something )
             
            
               
               
               
            
            
                 
                 
              
           
          
            
              
                brentf  
                
               
               
              
                  
                    December 8, 2021,  9:32pm
                   
                   
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              Did you ever solve this issue? I’m have the same problem with my Asrock x570 Extreme4 mobo
             
            
               
               
              1 Like 
            
            
                 
                 
              
           
          
            
              
                dens22  
                
               
               
              
                  
                    February 20, 2022,  6:14pm
                   
                   
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              No. Only can run 2 gpu on that board . But you can try with splitter. Cheep to buy and can run 4 gpu on 1 pci slot
             
            
               
               
               
            
            
                 
                 
              
           
          
            
              
                system  
                
                  Closed 
               
               
              
                  
                    April 13, 2023,  9:15am
                   
                   
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