Intel Core i9-11900KB vs AMD Ryzen 9 3900XT
            Intel Core i9-11900KB
            
                $539
            
        
    
            AMD Ryzen 9 3900XT
            
                $499
            
        
    | 8 Cores 16 Threads 3.3GHz Clock | 12 Cores 24 Threads 3.8GHz Clock | 
| Socket BGA 1787 | Socket AM4 | 
| iGPUUHD 32EU 1450MHz Gen 12 740 GFLOPS FP32 | iGPU No GPU - - | 
| 
                                            
                                                GB6S 2,200
                                            
                                             54% | 
                                            
                                                GB6S 1,745
                                            
                                             43% | 
| 
                                            
                                                GB6M 9,000
                                            
                                             34% | 
                                            
                                                GB6M 10,040
                                            
                                             38% | 
| CB23S 1,665 64% | CB23S 1,365 52% | 
| CB23M 12,265 28% | CB23M 18,515 43% | 
| ManufacturerIntel | ManufacturerAMD | 
| ArchitectureTiger Lake | ArchitectureZen 2 | 
| FamilyCore 11th Gen | FamilyRyzen 3000 | 
| Instruction Set (ISA) x86-64 | Instruction Set (ISA) x86-64 | 
| Codename Tiger Lake-B - Tiger Lake-8C - Willow Cove - - - - | Codename Matisse Aspen Highlands Matisse 2CCD - - - - - - | 
| Market Segment Desktop | Market Segment Desktop | 
| Release Date 6/11/2021 | Release Date 7/7/2020 | 
| Foundry Intel - - - | Foundry TSMC GlobalFoundries (IO Die) - - | 
| Node 10nm SuperFin - - - | Node N7 12LP (IO Die) - - | 
| Die Size 190 mm² - - - | Die Size 2x 74 mm² 125 mm² (IO Die) - - | 
| Transistor Count 12.4 Billion - - - | Transistor Count 2x 3.8 Billion 2.1 Billion (IO Die) - - | 
| 8 Cores - - - | 12 Cores - - - | 
| 16 Threads - - - | 24 Threads - - - | 
| - 3.3GHz 4.9GHz Boost - | - 3.8GHz 4.7GHz Boost - | 
| - - - | - - - | 
| - - - | - - - | 
| Overclocking Unlocked - - - | Overclocking Unlocked - - - | 
| Type DMI | Type PCIe | 
| - - | - - | 
| - - | - - | 
| Transfer Rate 8GT/s | Transfer Rate 16GT/s | 
| - - | - - | 
| Lanes 8 | Lanes 4 | 
| Bandwidth 8GB/s | Bandwidth 8GB/s | 
| Bi-directional 16GB/s | Bi-directional 16GB/s | 
| L0 Instruction - - | L0 Instruction - - | 
| L0 Data - - | L0 Data - - | 
| L1 Instruction 32KB/Core 8-way set associative - - - - | L1 Instruction 32KB/Core 8-way set associative - - - - | 
| L1 Data 48KB/Core 12-way set associative - - - - | L1 Data 32KB/Core 8-way set associative - - - - | 
| L2 1280KB/Core 20-way set associative - - - - - - - - - - | L2 512KB/Core 8-way set associative - - - - - - - - - - | 
| L3 - 24MB Shared - 12-way set associative - - - - - | L3 - 64MB Shared - 16-way set associative - - - - - | 
| - - - - | - - - - | 
| Channels 2 | Channels 2 | 
| Max Memory 128GB | Max Memory 128GB | 
| ECC Not Supported | ECC Not Supported | 
| Bus Width/Channel 64Bit Bus Width 128Bit | Bus Width/Channel 64Bit Bus Width 128Bit | 
| Clock 1600MHz Transfer Rate 3200MT/s | Clock 1600MHz Transfer Rate 3200MT/s | 
| Bandwidth/Channel 25.6GB/s Bandwidth 51.2GB/s | Bandwidth/Channel 25.6GB/s Bandwidth 51.2GB/s | 
| TDP 65W 55W cTDP Down - - | TDP 105W - - 145W Peak | 
| Temp 100°C Max - | Temp 95°C Max - | 
| Included Cooler Not Included | Included Cooler Not Included | 
| PCIe 4.0 x20 Lanes | PCIe 4.0 x20 Lanes | 
| UHD 32EU 1450MHz Gen 12 256 Shaders 1450MHz 740 GFLOPS FP32 | No GPU - - - - | 
| GNA 2.0 | No NPU - | 
| - - | - - | 
| -  | -  | 
| - - | - - | 
| No Cellular | No Cellular | 
 
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
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