i9-11900H vs Athlon II X4 651K
Primary details
Comparing Athlon II X4 651K and Core i9-11900H processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 579 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Series | no data | Tiger Lake |
| Power efficiency | no data | 34.99 |
| Architecture codename | Llano (2011−2012) | Tiger Lake-H (2021) |
| Release date | 14 November 2011 (12 years ago) | 11 May 2021 (3 years ago) |
Detailed specifications
Athlon II X4 651K 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 | 4 (Quad-Core) | 8 (Octa-Core) |
| Threads | 4 | 16 |
| Base clock speed | 3 GHz | 2.5 GHz |
| Boost clock speed | 3 GHz | 4.9 GHz |
| Bus rate | no data | 8 GT/s |
| L1 cache | 128 KB (per core) | 96K (per core) |
| L2 cache | 1 MB (per core) | 1.25 MB (per core) |
| L3 cache | 0 KB | 24 MB (shared) |
| Chip lithography | 32 nm | 10 nm SuperFin |
| Die size | 228 mm2 | no data |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | no data | 72 °C |
| Number of transistors | 1,178 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
Compatibility
Information on Athlon II X4 651K 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 | FM1 | FCBGA1787 |
| Power consumption (TDP) | 100 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon II X4 651K and Core i9-11900H. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512 |
| AES-NI | - | + |
| FMA | - | + |
| AVX | - | + |
| 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
Athlon II X4 651K 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 Athlon II X4 651K and Core i9-11900H 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 Athlon II X4 651K and Core i9-11900H. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4 |
| Maximum memory size | no data | 128 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 51.2 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | 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 Athlon II X4 651K and Core i9-11900H integrated GPUs.
| Number of displays supported | no data | 4 |
Graphics image quality
Maximum display resolutions supported by Athlon II X4 651K 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 Athlon II X4 651K and Core i9-11900H integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12.1 |
| OpenGL | no data | 4.6 |
Peripherals
Specifications and connection of peripherals supported by Athlon II X4 651K and Core i9-11900H.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 20 |
Pros & cons summary
| Recency | 14 November 2011 | 11 May 2021 |
| Physical cores | 4 | 8 |
| Threads | 4 | 16 |
| Chip lithography | 32 nm | 10 nm |
| Power consumption (TDP) | 100 Watt | 35 Watt |
i9-11900H has an age advantage of 9 years, 100% more physical cores and 300% more threads, a 220% more advanced lithography process, and 185.7% lower power consumption.
We couldn't decide between Athlon II X4 651K and Core i9-11900H. We've got no test results to judge.
Note that Athlon II X4 651K is a desktop processor while Core i9-11900H is a notebook one.
Should you still have questions on choice between Athlon II X4 651K and Core i9-11900H, ask them in Comments section, and we shall answer.
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