i9-11900KF vs Atom Z515
Primary details
Comparing Atom Z515 and Core i9-11900KF processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 425 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Laptop | Desktop processor |
| Series | Intel Atom | no data |
| Power efficiency | no data | 11.92 |
| Architecture codename | Silverthorne (2008−2010) | Rocket Lake (2021) |
| Release date | 8 April 2009 (15 years ago) | 16 March 2021 (3 years ago) |
Detailed specifications
Atom Z515 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 | 2 | 16 |
| Base clock speed | 1.2 GHz | 3.5 GHz |
| Boost clock speed | 1.2 GHz | 5.2 GHz |
| Bus type | FSB | no data |
| Bus rate | 400 MT/s | 8 GT/s |
| Multiplier | 12 | no data |
| L1 cache | 56 KB (per core) | 64K (per core) |
| L2 cache | 512 KB (per core) | 256K (per core) |
| L3 cache | 0 KB | 16 MB (shared) |
| Chip lithography | 45 nm | 14 nm |
| Die size | 24.18 mm2 | no data |
| Maximum core temperature | 90 °C | 100 °C |
| Maximum case temperature (TCase) | no data | 72 °C |
| Number of transistors | 47 million | no data |
| 64 bit support | - | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | - | + |
Compatibility
Information on Atom Z515 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 (Uniprocessor) | 1 |
| Socket | PBGA441 | FCLGA1200 |
| Power consumption (TDP) | 1.4 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom Z515 and Core i9-11900KF. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE2, Intel® SSE3, Intel® SSSE3 | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512 |
| AES-NI | - | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | - | 2.0 |
| Hyper-Threading Technology | + | + |
| TSX | - | + |
| Idle States | + | + |
| Thermal Monitoring | + | + |
| Demand Based Switching | + | no data |
| Turbo Boost Max 3.0 | no data | + |
| FSB parity | - | no data |
| Deep Learning Boost | - | + |
Security technologies
Atom Z515 and Core i9-11900KF technologies aimed at improving security, for example, by protecting against hacks.
| TXT | - | + |
| EDB | + | + |
| Secure Key | no data | + |
| Identity Protection | - | + |
| SGX | no data | - |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom Z515 and Core i9-11900KF are enumerated here.
| VT-d | - | + |
| VT-x | - | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom Z515 and Core i9-11900KF. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | unknown | 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 | On certain motherboards (Chipset feature) | no data |
Peripherals
Specifications and connection of peripherals supported by Atom Z515 and Core i9-11900KF.
| PCIe version | no data | 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.
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
| Recency | 8 April 2009 | 16 March 2021 |
| Physical cores | 1 | 8 |
| Threads | 2 | 16 |
| Chip lithography | 45 nm | 14 nm |
| Power consumption (TDP) | 1 Watt | 125 Watt |
Atom Z515 has 12400% lower power consumption.
i9-11900KF, on the other hand, has an age advantage of 11 years, 700% more physical cores and 700% more threads, and a 221.4% more advanced lithography process.
We couldn't decide between Atom Z515 and Core i9-11900KF. We've got no test results to judge.
Be aware that Atom Z515 is a notebook processor while Core i9-11900KF is a desktop one.
Should you still have questions on choice between Atom Z515 and Core i9-11900KF, ask them in Comments section, and we shall answer.
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