i9-11900KF vs Athlon 650
Primary details
Comparing Athlon 650 and Core i9-11900KF processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 437 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Desktop processor |
| Power efficiency | no data | 11.89 |
| Architecture codename | Thunderbird (1999−2000) | Rocket Lake (2021) |
| Release date | 9 August 1999 (25 years ago) | 16 March 2021 (3 years ago) |
| Launch price (MSRP) | $849 | no data |
Detailed specifications
Athlon 650 and Core i9-11900KF 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 | 1 (Single-Core) | 8 (Octa-Core) |
| Threads | 1 | 16 |
| Base clock speed | no data | 3.5 GHz |
| Boost clock speed | 0.65 GHz | 5.2 GHz |
| Bus rate | no data | 8 GT/s |
| L1 cache | 128 KB | 64K (per core) |
| L2 cache | 512 KB | 256K (per core) |
| L3 cache | 0 KB | 16 MB (shared) |
| Chip lithography | 180 nm | 14 nm |
| Die size | 184 mm2 | no data |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | 70 °C | 72 °C |
| Number of transistors | 22 million | no data |
| 64 bit support | - | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | - | + |
Compatibility
Information on Athlon 650 and Core i9-11900KF 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 | A | FCLGA1200 |
| Power consumption (TDP) | 48 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Athlon 650 and Core i9-11900KF. 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 | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | no data | + |
| TSX | - | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Turbo Boost Max 3.0 | no data | + |
| Deep Learning Boost | - | + |
Security technologies
Athlon 650 and Core i9-11900KF 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 | - |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Athlon 650 and Core i9-11900KF are enumerated here.
| VT-d | no data | + |
| VT-x | no data | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Athlon 650 and Core i9-11900KF. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR1 | DDR4-3200 |
| Maximum memory size | no data | 128 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 50 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | no data |
Peripherals
Specifications and connection of peripherals supported by Athlon 650 and Core i9-11900KF.
| PCIe version | no data | 4.0 |
| PCI Express lanes | no data | 20 |
Pros & cons summary
| Recency | 9 August 1999 | 16 March 2021 |
| Physical cores | 1 | 8 |
| Threads | 1 | 16 |
| Chip lithography | 180 nm | 14 nm |
| Power consumption (TDP) | 48 Watt | 125 Watt |
Athlon 650 has 160.4% lower power consumption.
i9-11900KF, on the other hand, has an age advantage of 21 year, 700% more physical cores and 1500% more threads, and a 1185.7% more advanced lithography process.
We couldn't decide between Athlon 650 and Core i9-11900KF. We've got no test results to judge.
Should you still have questions on choice between Athlon 650 and Core i9-11900KF, ask them in Comments section, and we shall answer.
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