i9-11900KB vs Atom x5-Z8350
Aggregate performance score
Core i9-11900KB outperforms Atom x5-Z8350 by a whopping 2481% based on our aggregate benchmark results.
Primary details
Comparing Atom x5-Z8350 and Core i9-11900KB processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 2818 | 494 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 17.86 |
| Market segment | Laptop | Desktop processor |
| Series | 5x Intel Atom | no data |
| Power efficiency | no data | 21.00 |
| Architecture codename | Cherry Trail (2015−2016) | Tiger Lake-H (2021) |
| Release date | 8 February 2016 (8 years ago) | May 2021 (3 years ago) |
| Launch price (MSRP) | no data | $539 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Atom x5-Z8350 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 | 4 (Quad-Core) | 8 (Octa-Core) |
| Threads | 4 | 16 |
| Base clock speed | 1.44 GHz | 3.3 GHz |
| Boost clock speed | 1.92 GHz | 4.9 GHz |
| Bus rate | no data | 8 GT/s |
| L1 cache | no data | 80K (per core) |
| L2 cache | 2 MB | 1.25 MB (per core) |
| L3 cache | 0 KB | 24 MB (shared) |
| Chip lithography | 14 nm | 10 nm SuperFin |
| Die size | no data | 190 mm2 |
| Maximum core temperature | 90 °C | 100 °C |
| Maximum case temperature (TCase) | no data | 72 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
| Unlocked multiplier | - | + |
Compatibility
Information on Atom x5-Z8350 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 (Uniprocessor) | 1 |
| Socket | UTFCBGA592 | FCBGA1787 |
| Power consumption (TDP) | no data | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Atom x5-Z8350 and Core i9-11900KB. 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 |
| AES-NI | + | + |
| AVX | - | + |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | no data | + |
| Hyper-Threading Technology | no data | + |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| Flex Memory Access | no data | + |
| Turbo Boost Max 3.0 | - | + |
| Deep Learning Boost | - | + |
Security technologies
Atom x5-Z8350 and Core i9-11900KB technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | no data | + |
| Secure Boot | + | no data |
| Secure Key | no data | + |
| Identity Protection | + | + |
| SGX | no data | Yes with Intel® ME |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Atom x5-Z8350 and Core i9-11900KB are enumerated here.
| VT-d | no data | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Atom x5-Z8350 and Core i9-11900KB. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | 4 GB | DDR4 |
| Maximum memory size | 2 GB | 128 GB |
| Max memory channels | 1 | 2 |
| Maximum memory bandwidth | 12.8 GB/s | 51.2 GB/s |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | Intel HD Graphics | Intel® UHD Graphics for 11th Gen Intel® Processors |
| Max video memory | 2 GB | no data |
| Quick Sync Video | - | + |
| Graphics max frequency | 500 MHz | 1.45 GHz |
| Execution Units | 12 | 32 |
Graphics interfaces
Available interfaces and connections of Atom x5-Z8350 and Core i9-11900KB integrated GPUs.
| Number of displays supported | 2 | 4 |
Graphics image quality
Maximum display resolutions supported by Atom x5-Z8350 and Core i9-11900KB integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | no data | + |
| Max resolution over HDMI 1.4 | 1920x1080 | 4096x2304@60Hz |
| Max resolution over eDP | no data | 4096 x 2304@60Hz |
| Max resolution over DisplayPort | no data | 7680x4320@60Hz |
Graphics API support
APIs supported by Atom x5-Z8350 and Core i9-11900KB integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12 |
| OpenGL | no data | 4.6 |
Peripherals
Specifications and connection of peripherals supported by Atom x5-Z8350 and Core i9-11900KB.
| PCIe version | 2.0 | 4.0 |
| PCI Express lanes | 1 | 20 |
| USB revision | 3.0 | no data |
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 10 32-bit single-core
Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.
Cinebench 10 32-bit multi-core
Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.
wPrime 32
wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.
Cinebench 11.5 64-bit multi-core
Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.
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.
Cinebench 11.5 64-bit single-core
Cinebench R11.5 is an old benchmark 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 loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.
Pros & cons summary
| Performance score | 0.58 | 14.97 |
| Physical cores | 4 | 8 |
| Threads | 4 | 16 |
| Chip lithography | 14 nm | 10 nm |
i9-11900KB has a 2481% higher aggregate performance score, 100% more physical cores and 300% more threads, and a 40% more advanced lithography process.
The Core i9-11900KB is our recommended choice as it beats the Atom x5-Z8350 in performance tests.
Be aware that Atom x5-Z8350 is a notebook processor while Core i9-11900KB is a desktop one.
Should you still have questions on choice between Atom x5-Z8350 and Core i9-11900KB, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
