Intel Core i9-11900K vs Intel Core i9-12900K
            Intel Core i9-11900K
            
                $539
            
        
    
            Intel Core i9-12900K
            
                $500
            
        
    | 8 Cores 16 Threads 3.5GHz Clock | 16 Cores 24 Threads 3.2GHz Clock | 
| Socket LGA 1200 | Socket LGA 1700 | 
| iGPUUHD 750 1300MHz 670 GFLOPS FP32 | iGPUUHD 770 1550MHz 790 GFLOPS FP32 | 
| 
                                            
                                                GB6S 2,450
                                            
                                             60% | 
                                            
                                                GB6S 2,660
                                            
                                             65% | 
| 
                                            
                                                GB6M 11,100
                                            
                                             42% | 
                                            
                                                GB6M 15,550
                                            
                                             58% | 
| CB23S 1,665 64% | CB23S 2,030 78% | 
| CB23M 16,210 38% | CB23M 27,780 64% | 
| ManufacturerIntel | ManufacturerIntel | 
| ArchitectureRocket Lake | ArchitectureAlder Lake | 
| FamilyCore 11th Gen | FamilyCore 12th Gen | 
| Instruction Set (ISA) x86-64 | Instruction Set (ISA) x86-64 | 
| Codename Rocket Lake-S - - - Cypress Cove - - - - | Codename Alder Lake-S - Alder Lake-8P-8E P-Core Golden Cove - - E-Core Gracemont | 
| Market Segment Desktop | Market Segment Desktop | 
| Release Date 3/16/2021 | Release Date 11/4/2021 | 
| Foundry Intel - - - | Foundry Intel - - - | 
| Node 14nm++++ - - - | Node Intel 7 - - - | 
| Die Size 276 mm² - - - | Die Size 202 mm² - - - | 
| Transistor Count 6.9 Billion - - - | Transistor Count 14.6 Billion - - - | 
| 8 Cores - - - | 16 Cores 8 P-Cores - 8 E-Cores | 
| 16 Threads - - - | 24 Threads 16 P-Threads - 8 E-Threads | 
| - 3.5GHz 5.2GHz Boost - | P-Core 3.2GHz 5.2GHz Boost - | 
| - - - | - - - | 
| - - - | E-Core 2.4GHz 3.9GHz Boost | 
| Overclocking Unlocked - - - | Overclocking Unlocked - - - | 
| Type DMI | Type DMI | 
| - - | - - | 
| - - | - - | 
| Transfer Rate 8GT/s | Transfer Rate 16GT/s | 
| - - | - - | 
| Lanes 8 | Lanes 8 | 
| Bandwidth 8GB/s | Bandwidth 16GB/s | 
| Bi-directional 16GB/s | Bi-directional 32GB/s | 
| L0 Instruction - - | L0 Instruction - - | 
| L0 Data - - | L0 Data - - | 
| L1 Instruction 32KB/Core 8-way set associative - - - - | L1 Instruction 32KB/P-Core 8-way set associative - - 64KB/E-Core 8-way set associative | 
| L1 Data 48KB/Core 12-way set associative - - - - | L1 Data 48KB/P-Core 12-way set associative - - 32KB/E-Core 8-way set associative | 
| L2 512KB/Core 8-way set associative - - - - - - - - - - | L2 1280KB/Core 10-way set associative - - - - - - - - 4MB Shared (E-Core) 16-way set associative | 
| L3 - 16MB Shared - 16-way set associative - - - - - | L3 - 30MB Shared - 12-way set associative - - - - - | 
| - - - - | - - - - | 
| Channels 2 | Channels 2 | 
| Max Memory 128GB | Max Memory 128GB 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 2400MHz 1600MHz Transfer Rate 4800MT/s 3200MT/s | 
| Bandwidth/Channel 25.6GB/s Bandwidth 51.2GB/s | Bandwidth/Channel 38.4GB/s 25.6GB/s Bandwidth 76.8GB/s 51.2GB/s | 
| TDP 125W - - 295W Peak | TDP 125W - - 241W Peak | 
| Temp 100°C Max - | Temp 100°C Max - | 
| Included Cooler Not Included | Included Cooler Not Included | 
| PCIe 4.0 x20 Lanes | PCIe 5.0 x16 Lanes PCIe 4.0 x4 Lanes | 
| UHD 750 1300MHz 256 Shaders 1300MHz 670 GFLOPS FP32 | UHD 770 1550MHz 256 Shaders 1550MHz 790 GFLOPS FP32 | 
| GNA 2.0 | GNA 3.0 | 
| - - | - - | 
| -  | -  | 
| - - | - - | 
| No Cellular | No Cellular | 
 
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
                             
                                 
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