XFX Radeon RX 6900 XT Speedster MERC 319 vs XFX Radeon RX 6800 XT Speedster MERC 319
            XFX Radeon RX 6900 XT Speedster MERC 319
            
                $730
            
        
    
            XFX Radeon RX 6800 XT Speedster MERC 319
            
                $620
            
        
    | 5120 Shaders 16GB GDDR6 2365MHz | 4608 Shaders 16GB GDDR6 2250MHz | 
| Peak AI Performance 48.44 TFLOPS FP16 | Peak AI Performance 41.47 TFLOPS FP16 | 
| FP32 24.22 TFLOPS | FP32 20.74 TFLOPS | 
| FP16 48.44 TFLOPS | FP16 41.47 TFLOPS | 
| Form Factor PCIe Card 2.8-Slots | Form Factor PCIe Card 2.7-Slots | 
| TDP 350W | TDP 300W | 
| Power Connectors - 2x 8-Pin - - | Power Connectors - 2x 8-Pin - - | 
| GB6 OpenCL N/A 0% | GB6 OpenCL N/A 0% | 
| GB6 Metal N/A 0% | GB6 Metal N/A 0% | 
| GB6 Vulkan N/A 0% | GB6 Vulkan N/A 0% | 
| GB5 OpenCL 173,555 57% | GB5 OpenCL 156,955 51% | 
| GB5 CUDA N/A 0% | GB5 CUDA N/A 0% | 
| GB5 Metal 170,855 95% | GB5 Metal 149,520 83% | 
| GB5 Vulkan 119,870 58% | GB5 Vulkan 100,755 49% | 
| OCT 2020.1 N/A 0% | OCT 2020.1 N/A 0% | 
| OCT Metal 405 69% | OCT Metal 355 60% | 
| Peak AI
                                            Performance 
                                            48.44 TFLOPS
                                         
                                            FP16
                                         | Peak AI
                                            Performance 
                                            41.47 TFLOPS
                                         
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                                            48.44 TFLOPS
                                            
                                                
                                            
                                         
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                                            41.47 TFLOPS
                                            
                                                
                                            
                                         
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                                            FP32
                                         
                                            24.22 TFLOPS
                                            
                                                
                                            
                                         
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                                            FP32
                                         
                                            20.74 TFLOPS
                                            
                                                
                                            
                                         
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                                            FP64
                                         
                                            1.51 TFLOPS
                                            
                                                
                                            
                                         
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                                            1.3 TFLOPS
                                            
                                                
                                            
                                         
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| Pixel
                                            Fillrate 
                                            302.72 GPixel/s
                                         | Pixel
                                            Fillrate 
                                            288 GPixel/s
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| Texture
                                            Fillrate 
                                            756.8 GTexel/s
                                         | Texture
                                            Fillrate 
                                            648 GTexel/s
                                         | 
| ManufacturerXFX | ManufacturerXFX | 
| Chip DesignerAMD | Chip DesignerAMD | 
| ArchitectureRDNA 2 | ArchitectureRDNA 2 | 
| FamilyRadeon RX 6000 | FamilyRadeon RX 6000 | 
| Codename Sienna Cichlid Navi 21 Variant Navi 21 XTX | Codename Sienna Cichlid Navi 21 Variant Navi 21 XT | 
| Market Segment Desktop | Market Segment Desktop | 
| Release Date 12/8/2020 | Release Date 11/18/2020 | 
| Foundry TSMC - | Foundry TSMC - | 
| Fabrication Node N7 - | Fabrication Node N7 - | 
| Die Size 520 mm² - | Die Size 520 mm² - | 
| Transistor Count 26.8 Billion - | Transistor Count 26.8 Billion - | 
| Transistor Density 51.56M/mm² - | Transistor Density 51.56M/mm² - | 
| Form PCIe Card | Form PCIe Card | 
| Shading Units 5120 Shaders - | Shading Units 4608 Shaders - | 
| Texture Mapping Units 320 TMUs | Texture Mapping Units 288 TMUs | 
| Render Output Units 128 ROPs | Render Output Units 128 ROPs | 
| - - | - - | 
| Ray-Tracing Cores 80 RT-Cores | Ray-Tracing Cores 72 RT-Cores | 
| - - | - - | 
| Compute Units 80 CUs | Compute Units 72 CUs | 
| - - | - - | 
| Graphics Processing Clusters 4 GPCs | Graphics Processing Clusters 4 GPCs | 
| - - 1950MHz Base 2365MHz | - - 1825MHz Base 2250MHz | 
| L0 32KB/WGP | L0 32KB/WGP | 
| L1 - - - 128KB/Array | L1 - - - 128KB/Array | 
| L2 4MB Shared | L2 4MB Shared | 
| L3 128MB Shared 1.66TB/s | L3 128MB Shared 1.66TB/s | 
| 16GB GDDR6 - | 16GB GDDR6 - | 
| Bus Width 256Bit | Bus Width 256Bit | 
| Clock 2000MHz Transfer Rate 16GT/s Bandwidth 512GB/s | Clock 2000MHz Transfer Rate 16GT/s Bandwidth 512GB/s | 
| - - - - - - - - - | - - - - - - - - - | 
| TDP 350W | TDP 300W | 
| Temp 110°C Max | Temp 110°C Max | 
| - - - - - - - - - - - - - - - - - - - - - - - - 2x DisplayPort 1.4 - - - - - - - - - - - 1x HDMI 2.1 1x USB-C + DP - | - - - - - - - - - - - - - - - - - - - - - - - - 3x DisplayPort 1.4 - - - - - - - - - - - 1x HDMI 2.1 - - | 
| Max Resolution 7680x4320 | Max Resolution 7680x4320 | 
| Max Resolution Refresh Rate 120Hz | Max Resolution Refresh Rate 120Hz | 
| Variable Refresh Rate - FreeSync - | Variable Refresh Rate - FreeSync - | 
| Display Stream Compression (DSC) Supported | Display Stream Compression (DSC) Supported | 
| Multi Monitor Support 4 | Multi Monitor Support 4 | 
| Content Protection HDCP 2.3 | Content Protection HDCP 2.3 | 
| Model VCN 3.0 | Model VCN 3.0 | 
| Codec - - - - - - - - AVC (H.264) HEVC (H.265) - - - - | Codec - - - - - - - - AVC (H.264) HEVC (H.265) - - - - | 
| Model VCN 3.0 | Model VCN 3.0 | 
| Codec MPEG-1 MPEG-2 MPEG-4 JPEG VC-1 - VP9 - AVC (H.264) HEVC (H.265) - AV1 - - | Codec MPEG-1 MPEG-2 MPEG-4 JPEG VC-1 - VP9 - AVC (H.264) HEVC (H.265) - AV1 - - | 
| Direct X 12 Direct 3D 12_2 | Direct X 12 Direct 3D 12_2 | 
| OpenGL 4.6 OpenCL 2.1 Vulkan 1.2 | OpenGL 4.6 OpenCL 2.1 Vulkan 1.2 | 
| Shader Model 6.5 - - GFX 10.3 - - - - | Shader Model 6.5 - - GFX 10.3 - - - - | 
| - - - 3x Fans | - - - 3x Fans | 
| Power Connectors - - - 2x 8-Pin - - - | Power Connectors - - - 2x 8-Pin - - - | 
| Slots Required 2.8 PCIe Version 4.0 PCIe Lanes 16 | Slots Required 2.7 PCIe Version 4.0 PCIe Lanes 16 | 
| Multi GPU Support Supported Type Bridgeless | Multi GPU Support Supported Type Bridgeless | 
| Height 139 mm (5.47 in) Width 340 mm (13.39 in) Depth 57 mm (2.24 in) | Height 138 mm (5.43 in) Width 340 mm (13.39 in) Depth 54 mm (2.13 in) | 
 
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
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