i9-11900H vs A6-6400K
Aggregate performance score
Core i9-11900H outperforms A6-6400K by a whopping 1260% based on our aggregate benchmark results.
Primary details
Comparing A6-6400K and Core i9-11900H processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2520 | 593 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | AMD A-Series (Desktop) | Tiger Lake |
| Power efficiency | 1.38 | 34.93 |
| Architecture codename | Richland (2013−2014) | Tiger Lake-H (2021) |
| Release date | 1 June 2013 (11 years ago) | 11 May 2021 (3 years ago) |
Detailed specifications
A6-6400K and Core i9-11900H 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 | 2 (Dual-core) | 8 (Octa-Core) |
| Threads | 2 | 16 |
| Base clock speed | 3.9 GHz | 2.5 GHz |
| Boost clock speed | 4.1 GHz | 4.9 GHz |
| Bus rate | no data | 8 GT/s |
| L1 cache | 96 KB | 96K (per core) |
| L2 cache | 1024 KB | 1.25 MB (per core) |
| L3 cache | 0 KB | 24 MB (shared) |
| Chip lithography | 32 nm | 10 nm SuperFin |
| Die size | 246 mm2 | no data |
| Maximum core temperature | 70 °C | 100 °C |
| Maximum case temperature (TCase) | 70 °C | 72 °C |
| Number of transistors | 1,178 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | + | - |
Compatibility
Information on A6-6400K and Core i9-11900H 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 | FM2 | FCBGA1787 |
| Power consumption (TDP) | 65 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by A6-6400K and Core i9-11900H. You'll probably need this information if you require some particular technology.
| Instruction set extensions | MMX, SSE1-4a, AES, ABM, AVX, BMI1, AMD64, VT, EVP, Turbo Core 3.0 | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512 |
| AES-NI | + | + |
| FMA | FMA4 | + |
| AVX | + | + |
| PowerNow | + | - |
| PowerGating | + | - |
| VirusProtect | + | - |
| Enhanced SpeedStep (EIST) | no data | + |
| Speed Shift | no data | + |
| Hyper-Threading Technology | no data | + |
| TSX | - | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | + |
| Turbo Boost Max 3.0 | no data | + |
| Deep Learning Boost | - | + |
Security technologies
A6-6400K and Core i9-11900H technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| Secure Key | no data | + |
| SGX | no data | - |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by A6-6400K and Core i9-11900H are enumerated here.
| AMD-V | + | - |
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
| IOMMU 2.0 | + | - |
Memory specs
Types, maximum amount and channel quantity of RAM supported by A6-6400K and Core i9-11900H. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3-1866 | DDR4 |
| Maximum memory size | no data | 128 GB |
| Max memory channels | 2 | 2 |
| Maximum memory bandwidth | no data | 51.2 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | AMD Radeon HD 8470D | Intel UHD Graphics for 11th Gen Intel Processors |
| จำนวนพาธไลน์ | 192 | no data |
| Quick Sync Video | - | + |
| Enduro | + | - |
| Switchable graphics | + | - |
| UVD | + | - |
| VCE | + | - |
| Graphics max frequency | no data | 1.45 GHz |
| Execution Units | no data | 32 |
Graphics interfaces
Available interfaces and connections of A6-6400K and Core i9-11900H integrated GPUs.
| Number of displays supported | no data | 4 |
| DisplayPort | + | - |
| HDMI | + | - |
Graphics image quality
Maximum display resolutions supported by A6-6400K and Core i9-11900H integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | no data | 4096x2304@60Hz |
| Max resolution over eDP | no data | 4096x2304@60Hz |
| Max resolution over DisplayPort | no data | 7680x4320@60Hz |
Graphics API support
APIs supported by A6-6400K and Core i9-11900H integrated GPUs, sometimes API versions are included.
| DirectX | DirectX® 11 | 12.1 |
| OpenGL | no data | 4.6 |
Peripherals
Specifications and connection of peripherals supported by A6-6400K and Core i9-11900H.
| PCIe version | 2.0 | 4.0 |
| PCI Express lanes | no data | 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.
Cinebench 15 64-bit multi-core
Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.
Cinebench 15 64-bit single-core
Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.
Pros & cons summary
| Performance score | 0.95 | 12.92 |
| Integrated graphics card | 0.97 | 5.58 |
| Recency | 1 June 2013 | 11 May 2021 |
| Physical cores | 2 | 8 |
| Threads | 2 | 16 |
| Chip lithography | 32 nm | 10 nm |
| Power consumption (TDP) | 65 Watt | 35 Watt |
i9-11900H has a 1260% higher aggregate performance score, 475.3% faster integrated GPU, an age advantage of 7 years, 300% more physical cores and 700% more threads, a 220% more advanced lithography process, and 85.7% lower power consumption.
The Core i9-11900H is our recommended choice as it beats the A6-6400K in performance tests.
Note that A6-6400K is a desktop processor while Core i9-11900H is a notebook one.
Should you still have questions on choice between A6-6400K and Core i9-11900H, ask them in Comments section, and we shall answer.
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