ATI Radeon HD 4730 vs ATI Radeon HD 4750
            ATI Radeon HD 4730
            
                
            
        
    
            ATI Radeon HD 4750
            
                
            
        
    | 640 Shaders 512MB GDDR5 750MHz | 640 Shaders 512MB GDDR5 730MHz | 
| Peak AI Performance 960 GFLOPS FP32 | Peak AI Performance 930 GFLOPS FP32 | 
| FP32 960 GFLOPS | FP32 930 GFLOPS | 
| - - | - - | 
| Form Factor PCIe Card 1.0-Slots | Form Factor PCIe Card 1.0-Slots | 
| TDP 110W | TDP 80W | 
| Power Connectors 1x 6-Pin - - - | Power Connectors 1x 6-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 N/A 0% | GB5 OpenCL N/A 0% | 
| GB5 CUDA N/A 0% | GB5 CUDA N/A 0% | 
| GB5 Metal N/A 0% | GB5 Metal N/A 0% | 
| GB5 Vulkan N/A 0% | GB5 Vulkan N/A 0% | 
| OCT 2020.1 N/A 0% | OCT 2020.1 N/A 0% | 
| OCT Metal N/A 0% | OCT Metal N/A 0% | 
| Peak AI
                                            Performance 
                                            960 GFLOPS
                                         
                                            FP32
                                         | Peak AI
                                            Performance 
                                            930 GFLOPS
                                         
                                            FP32
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                                            FP32
                                         
                                            960 GFLOPS
                                            
                                                
                                            
                                         
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                                            FP32
                                         
                                            930 GFLOPS
                                            
                                                
                                            
                                         
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                                            FP64
                                         
                                            190 GFLOPS
                                            
                                                
                                            
                                         
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                                            190 GFLOPS
                                            
                                                
                                            
                                         
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| Pixel
                                            Fillrate 
                                            6 GPixel/s
                                         | Pixel
                                            Fillrate 
                                            11.68 GPixel/s
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| Texture
                                            Fillrate 
                                            24 GTexel/s
                                         | Texture
                                            Fillrate 
                                            23.36 GTexel/s
                                         | 
| ManufacturerATI | ManufacturerATI | 
| Chip DesignerATI | Chip DesignerATI | 
| ArchitectureTeraScale 1 | ArchitectureTeraScale 1 | 
| FamilyRadeon HD 4000 | FamilyRadeon HD 4000 | 
| Codename Wekiva RV770 Variant RV770 CE | Codename Walden RV740 Variant RV740 | 
| Market Segment Desktop | Market Segment Desktop | 
| Release Date 6/8/2009 | Release Date 9/9/2009 | 
| Foundry TSMC - | Foundry TSMC - | 
| Fabrication Node 55nm - | Fabrication Node 40nm - | 
| Die Size 256 mm² - | Die Size 137 mm² - | 
| Transistor Count 956 Million - | Transistor Count 826 Million - | 
| Transistor Density 3.73M/mm² - | Transistor Density 6.03M/mm² - | 
| Form PCIe Card | Form PCIe Card | 
| Shading Units 640 Shaders - | Shading Units 640 Shaders - | 
| Texture Mapping Units 32 TMUs | Texture Mapping Units 32 TMUs | 
| Render Output Units 8 ROPs | Render Output Units 16 ROPs | 
| - - | - - | 
| - - | - - | 
| - - | - - | 
| Compute Units 8 CUs | Compute Units 8 CUs | 
| - - | - - | 
| - - | - - | 
| - - - 750MHz | - - - 730MHz | 
| - - | - - | 
| L1 - - 16KB/CU - | L1 - - 16KB/CU - | 
| L2 256KB Shared | L2 128KB Shared | 
| - - - | - - - | 
| 512MB GDDR5 - | 512MB GDDR5 - | 
| Bus Width 128Bit | Bus Width 128Bit | 
| Clock 900MHz Transfer Rate 3.6GT/s Bandwidth 57.6GB/s | Clock 800MHz Transfer Rate 3.2GT/s Bandwidth 51.2GB/s | 
| - - - - - - - - - | - - - - - - - - - | 
| TDP 110W | TDP 80W | 
| - - | - - | 
| - 1x S-Video - - - - - - 2x DVI-I Dual-Link - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | - 1x S-Video - - - - - - 2x DVI-I Dual-Link - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - | 
| Max Resolution 2560x1600 | Max Resolution 2560x1600 | 
| Max Resolution Refresh Rate 60Hz | Max Resolution Refresh Rate 60Hz | 
| Variable Refresh Rate - - - | Variable Refresh Rate - - - | 
| Display Stream Compression (DSC) Not Supported | Display Stream Compression (DSC) Not Supported | 
| Multi Monitor Support 2 | Multi Monitor Support 2 | 
| - - | - - | 
| No Encoders - | No Encoders - | 
| - - - - - - - - - - - - - - - | - - - - - - - - - - - - - - - | 
| Model UVD 2.0 | Model UVD 2.2 | 
| Codec - - - - VC-1 - - - AVC (H.264) - - - - - | Codec - - - - VC-1 - - - AVC (H.264) - - - - - | 
| Direct X 10 Direct 3D 10_1 | Direct X 10 Direct 3D 10_1 | 
| OpenGL 3.3 OpenCL 1.1 - - | OpenGL 3.3 OpenCL 1.1 - - | 
| Shader Model 4.1 - - GFX 3 - - - - | Shader Model 4.1 - - GFX 3 - - - - | 
| - - - 1x Fan | - - - 1x Fan | 
| Power Connectors - - 1x 6-Pin - - - - | Power Connectors - - 1x 6-Pin - - - - | 
| Slots Required 1.0 PCIe Version 2.0 PCIe Lanes 16 | Slots Required 1.0 PCIe Version 2.0 PCIe Lanes 16 | 
| Multi GPU Support Supported Type 2-way CrossFireX | Multi GPU Support Supported Type 2-way CrossFireX | 
| - - - - - - | - - - - - - | 
 
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
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