Intel Core i9-11900KB vs Intel Core i9-11900
            Intel Core i9-11900KB
            
                $539
            
        
    
            Intel Core i9-11900
            
                $439
            
        
    | 8 Cores 16 Threads 3.3GHz Clock | 8 Cores 16 Threads 2.5GHz Clock | 
| Socket BGA 1787 | Socket LGA 1200 | 
| iGPUUHD 32EU 1450MHz Gen 12 740 GFLOPS FP32 | iGPUUHD 750 1300MHz 670 GFLOPS FP32 | 
| 
                                            
                                                GB6S 2,200
                                            
                                             54% | 
                                            
                                                GB6S 2,250
                                            
                                             55% | 
| 
                                            
                                                GB6M 9,000
                                            
                                             34% | 
                                            
                                                GB6M 9,100
                                            
                                             34% | 
| CB23S 1,665 64% | CB23S 1,495 58% | 
| CB23M 12,265 28% | CB23M 13,360 31% | 
| ManufacturerIntel | ManufacturerIntel | 
| ArchitectureTiger Lake | ArchitectureRocket Lake | 
| FamilyCore 11th Gen | FamilyCore 11th Gen | 
| Instruction Set (ISA) x86-64 | Instruction Set (ISA) x86-64 | 
| Codename Tiger Lake-B - Tiger Lake-8C - Willow Cove - - - - | Codename Rocket Lake-S - - - Cypress Cove - - - - | 
| Market Segment Desktop | Market Segment Desktop | 
| Release Date 6/11/2021 | Release Date 3/16/2021 | 
| Foundry Intel - - - | Foundry Intel - - - | 
| Node 10nm SuperFin - - - | Node 14nm++++ - - - | 
| Die Size 190 mm² - - - | Die Size 276 mm² - - - | 
| Transistor Count 12.4 Billion - - - | Transistor Count 6.9 Billion - - - | 
| 8 Cores - - - | 8 Cores - - - | 
| 16 Threads - - - | 16 Threads - - - | 
| - 3.3GHz 4.9GHz Boost - | - 2.5GHz 5.1GHz Boost - | 
| - - - | - - - | 
| - - - | - - - | 
| Overclocking Unlocked - - - | Overclocking Locked - - - | 
| Type DMI | Type DMI | 
| - - | - - | 
| - - | - - | 
| Transfer Rate 8GT/s | Transfer Rate 8GT/s | 
| - - | - - | 
| Lanes 8 | Lanes 8 | 
| 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 48KB/Core 12-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 - 16MB 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 65W - - - | 
| Temp 100°C Max - | Temp 100°C Max - | 
| Included Cooler Not Included | Included CoolerStock Cooler 1200 | 
| PCIe 4.0 x20 Lanes | PCIe 4.0 x20 Lanes | 
| UHD 32EU 1450MHz Gen 12 256 Shaders 1450MHz 740 GFLOPS FP32 | UHD 750 1300MHz 256 Shaders 1300MHz 670 GFLOPS FP32 | 
| GNA 2.0 | GNA 2.0 | 
| - - | - - | 
| -  | -  | 
| - - | - - | 
| No Cellular | No Cellular | 
 
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
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