Core i9-11900KB vs Core i5-10400
Aggregate performance score
i9-11900KB outperforms i5-10400 by an impressive 89% based on our aggregate benchmark results.
Primary details
Comparing Core i5-10400 and Core i9-11900KB processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 889 | 448 |
| Place by popularity | 50 | not in top-100 |
| Cost-effectiveness evaluation | 32.10 | no data |
| Market segment | Desktop processor | Desktop processor |
| Architecture codename | Comet Lake (2020) | Tiger Lake-H (2021) |
| Release date | 30 April 2020 (4 years ago) | 14 June 2021 (3 years ago) |
| Launch price (MSRP) | no data | $539 |
| Current price | $115 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i5-10400 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 | 6 (Hexa-Core) | 8 (Octa-Core) |
| Threads | 12 | 16 |
| Base clock speed | 2.9 GHz | 3.3 GHz |
| Boost clock speed | 4.3 GHz | 5.3 GHz |
| L1 cache | 64K (per core) | 768 KB |
| L2 cache | 256K (per core) | 10 MB |
| L3 cache | 12 MB (shared) | 24 MB |
| Chip lithography | 14 nm | 10 nm |
| Die size | no data | 190 mm2 |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | 72 °C | 72 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | + | - |
| Unlocked multiplier | No | Yes |
Compatibility
Information on Core i5-10400 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 | 1 |
| Socket | 1200 | BGA 1499 |
| Power consumption (TDP) | 65 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i5-10400 and Core i9-11900KB. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| Enhanced SpeedStep (EIST) | + | + |
| TSX | + | + |
Security technologies
Core i5-10400 and Core i9-11900KB technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i5-10400 and Core i9-11900KB are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i5-10400 and Core i9-11900KB. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2666 | DDR4 |
| Maximum memory bandwidth | 41.6 GB/s | 51.2 GB/s |
| ECC memory support | - | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | Intel UHD Graphics 630 | Intel UHD Graphics Xe 32EUs (Tiger Lake-H) |
Peripherals
Specifications and connection of peripherals supported by Core i5-10400 and Core i9-11900KB.
| PCIe version | 3.0 | 4.0 |
| PCI Express lanes | 16 | 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.
Core i9-11900KB outperforms Core i5-10400 by 89% based on our aggregate benchmark results.
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.
Benchmark coverage: 68%
Core i9-11900KB outperforms Core i5-10400 by 89% in Passmark.
Pros & cons summary
| Performance score | 7.85 | 14.80 |
| Integrated graphics card | 3.09 | 4.72 |
| Recency | 30 April 2020 | 14 June 2021 |
| Physical cores | 6 | 8 |
| Threads | 12 | 16 |
| Chip lithography | 14 nm | 10 nm |
i9-11900KB has a 88.5% higher aggregate performance score, 52.8% faster integrated GPU, an age advantage of 1 year, 33.3% more physical cores and 33.3% more threads, and a 40% more advanced lithography process.
The Core i9-11900KB is our recommended choice as it beats the Core i5-10400 in performance tests.
Should you still have questions on choice between Core i5-10400 and Core i9-11900KB, ask them in Comments section, and we shall answer.
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