i9-11900KB vs Ryzen 7 2800H
Aggregate performance score
Core i9-11900KB outperforms Ryzen 7 2800H by a whopping 186% based on our aggregate benchmark results.
Primary details
Comparing Ryzen 7 2800H and Core i9-11900KB processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1213 | 496 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 17.86 |
| Market segment | Laptop | Desktop processor |
| Series | AMD Ryzen 7 | no data |
| Power efficiency | 31.80 | 21.01 |
| Architecture codename | Raven Ridge (Zen) (2018) | Tiger Lake-H (2021) |
| Release date | 30 May 2018 (6 years ago) | May 2021 (3 years ago) |
| Launch price (MSRP) | no data | $539 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Ryzen 7 2800H and Core i9-11900KB basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.
| Physical cores | 4 (Quad-Core) | 8 (Octa-Core) |
| Threads | 8 | 16 |
| Base clock speed | 3.4 GHz | 3.3 GHz |
| Boost clock speed | 3.8 GHz | 4.9 GHz |
| Bus rate | no data | 8 GT/s |
| Multiplier | 33 | no data |
| L1 cache | 128K (per core) | 80K (per core) |
| L2 cache | 512K (per core) | 1.25 MB (per core) |
| L3 cache | 4 MB (shared) | 24 MB (shared) |
| Chip lithography | 14 nm | 10 nm SuperFin |
| Die size | 246 mm2 | 190 mm2 |
| Maximum core temperature | 95 °C | 100 °C |
| Maximum case temperature (TCase) | no data | 72 °C |
| Number of transistors | 4950 Million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | - | + |
Compatibility
Information on Ryzen 7 2800H and Core i9-11900KB compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 (Uniprocessor) | 1 |
| Socket | FP5 | FCBGA1787 |
| Power consumption (TDP) | 15 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Ryzen 7 2800H and Core i9-11900KB. You'll probably need this information if you require some particular technology.
| Instruction set extensions | MMX (+), SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, SSE4A, AES, AVX, AVX2, FMA3, SHA | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 |
| AES-NI | + | + |
| AVX | + | + |
| Enhanced SpeedStep (EIST) | no data | + |
| Speed Shift | no data | + |
| Hyper-Threading Technology | no data | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | + |
| Turbo Boost Max 3.0 | no data | + |
| Precision Boost 2 | + | no data |
| Deep Learning Boost | - | + |
Security technologies
Ryzen 7 2800H and Core i9-11900KB technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
| Secure Key | no data | + |
| Identity Protection | - | + |
| SGX | no data | Yes with Intel® ME |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Ryzen 7 2800H and Core i9-11900KB are enumerated here.
| AMD-V | + | - |
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Ryzen 7 2800H and Core i9-11900KB. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 | DDR4 |
| Maximum memory size | 32 GB | 128 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | 51.196 GB/s | 51.2 GB/s |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | AMD Radeon RX Vega 11 ( - 1300 MHz) | Intel UHD Graphics for 11th Gen Intel Processors |
| Quick Sync Video | - | + |
| Graphics max frequency | no data | 1.45 GHz |
| Execution Units | no data | 32 |
Graphics interfaces
Available interfaces and connections of Ryzen 7 2800H and Core i9-11900KB integrated GPUs.
| Number of displays supported | no data | 4 |
Graphics image quality
Maximum display resolutions supported by Ryzen 7 2800H and Core i9-11900KB integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | no data | + |
| Max resolution over HDMI 1.4 | no data | 4096x2304@60Hz |
| Max resolution over eDP | no data | 4096 x 2304@60Hz |
| Max resolution over DisplayPort | no data | 7680x4320@60Hz |
Graphics API support
APIs supported by Ryzen 7 2800H and Core i9-11900KB integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12 |
| OpenGL | no data | 4.6 |
Peripherals
Specifications and connection of peripherals supported by Ryzen 7 2800H and Core i9-11900KB.
| PCIe version | 3.0 | 4.0 |
| PCI Express lanes | 12 | 20 |
Synthetic benchmark performance
Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
Pros & cons summary
| Performance score | 5.04 | 14.43 |
| Integrated graphics card | 5.47 | 5.58 |
| Physical cores | 4 | 8 |
| Threads | 8 | 16 |
| Chip lithography | 14 nm | 10 nm |
| Power consumption (TDP) | 15 Watt | 65 Watt |
Ryzen 7 2800H has 333.3% lower power consumption.
i9-11900KB, on the other hand, has a 186.3% higher aggregate performance score, 2% faster integrated GPU, 100% more physical cores and 100% more threads, and a 40% more advanced lithography process.
The Core i9-11900KB is our recommended choice as it beats the Ryzen 7 2800H in performance tests.
Be aware that Ryzen 7 2800H is a notebook processor while Core i9-11900KB is a desktop one.
Should you still have questions on choice between Ryzen 7 2800H and Core i9-11900KB, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
