Ryzen 9 7845HX vs Core i9-11900K
Aggregate performance score
Ryzen 9 7845HX outperforms Core i9-11900K by an impressive 81% based on our aggregate benchmark results.
Primary details
Comparing Core i9-11900K and Ryzen 9 7845HX processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 374 | 136 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 51.29 | no data |
| Market segment | Desktop processor | Laptop |
| Architecture codename | Rocket Lake (2021) | Dragon Range-HX (Zen 4) |
| Release date | 16 March 2021 (3 years ago) | 4 January 2023 (1 year ago) |
| Current price | $250 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i9-11900K and Ryzen 9 7845HX 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 | 8 (Octa-Core) | 12 (Dodeca-Core) |
| Threads | 16 | 24 |
| Base clock speed | 3.5 GHz | 3 GHz |
| Boost clock speed | 5.2 GHz | 5.2 GHz |
| L1 cache | 64K (per core) | 64K (per core) |
| L2 cache | 256K (per core) | 1 MB (per core) |
| L3 cache | 16 MB (shared) | 64 MB (shared) |
| Chip lithography | 14 nm | CCD = 5 nm, I/O = 6 nm |
| Die size | no data | 2x 71 mm2 |
| Maximum core temperature | 100 °C | 100 °C |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | no data | 13,140 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | + |
| Unlocked multiplier | Yes | Yes |
Compatibility
Information on Core i9-11900K and Ryzen 9 7845HX 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 | FCLGA1200 | FL1 |
| Power consumption (TDP) | 125 Watt | 55 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i9-11900K and Ryzen 9 7845HX. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512 | DDR5-5200 RAM, PCIe 5, MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME |
| AES-NI | + | + |
| FMA | no data | + |
| AVX | + | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| TSX | + | no data |
| Idle States | + | no data |
| Thermal Monitoring | + | no data |
| SIPP | + | no data |
| Turbo Boost Max 3.0 | + | no data |
| Status | Discontinued | no data |
Security technologies
Core i9-11900K and Ryzen 9 7845HX technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
| Secure Key | + | no data |
| Identity Protection | + | no data |
| SGX | - | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i9-11900K and Ryzen 9 7845HX are enumerated here.
| AMD-V | no data | + |
| VT-d | + | no data |
| VT-x | + | no data |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i9-11900K and Ryzen 9 7845HX. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 | DDR5 |
| Maximum memory size | 128 GB | no data |
| Max memory channels | 2 | no data |
| Maximum memory bandwidth | 50 GB/s | no data |
| ECC memory support | - | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card Compare | Intel UHD Graphics 750 | AMD Radeon 610M |
| Max video memory | 64 GB | no data |
| Quick Sync Video | + | no data |
| Clear Video | + | no data |
| Clear Video HD | + | no data |
| Graphics max frequency | 1.3 GHz | no data |
| Execution Units | 32 | no data |
| InTru 3D | + | no data |
Graphics interfaces
Available interfaces and connections of Core i9-11900K and Ryzen 9 7845HX integrated GPUs.
| Number of displays supported | 3 | no data |
Graphics image quality
Maximum display resolutions supported by Core i9-11900K and Ryzen 9 7845HX integrated GPUs, including resolutions over different interfaces.
| 4K resolution support | + | no data |
| Max resolution over HDMI 1.4 | 4096x2160@60Hz | no data |
| Max resolution over eDP | 5120 x 3200 @60Hz | no data |
| Max resolution over DisplayPort | 5120 x 3200 @60Hz | no data |
Graphics API support
APIs supported by Core i9-11900K and Ryzen 9 7845HX integrated GPUs, sometimes API versions are included.
| DirectX | 12.1 | no data |
| OpenGL | 4.5 | no data |
Peripherals
Specifications and connection of peripherals supported by Core i9-11900K and Ryzen 9 7845HX.
| PCIe version | 4.0 | 5.0 |
| PCI Express lanes | 20 | 28 |
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.
Ryzen 9 7845HX outperforms Core i9-11900K by 81% based on our aggregate benchmark results.
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.
Benchmark coverage: 68%
Ryzen 9 7845HX outperforms Core i9-11900K by 81% in Passmark.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
Benchmark coverage: 42%
Ryzen 9 7845HX outperforms Core i9-11900K by 11% in GeekBench 5 Single-Core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
Benchmark coverage: 42%
Ryzen 9 7845HX outperforms Core i9-11900K by 25% in GeekBench 5 Multi-Core.
Cinebench 15 64-bit multi-core
Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.
Benchmark coverage: 15%
Ryzen 9 7845HX outperforms Core i9-11900K by 82% in Cinebench 15 64-bit multi-core.
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.
Benchmark coverage: 15%
Ryzen 9 7845HX outperforms Core i9-11900K by 16% in Cinebench 15 64-bit single-core.
Pros & cons summary
| Performance score | 16.35 | 29.58 |
| Integrated graphics card | 4.49 | 2.86 |
| Recency | 16 March 2021 | 4 January 2023 |
| Physical cores | 8 | 12 |
| Threads | 16 | 24 |
| Power consumption (TDP) | 125 Watt | 55 Watt |
The Ryzen 9 7845HX is our recommended choice as it beats the Core i9-11900K in performance tests.
Note that Core i9-11900K is a desktop processor while Ryzen 9 7845HX is a notebook one.
Should you still have questions on choice between Core i9-11900K and Ryzen 9 7845HX, ask them in Comments section, and we shall answer.
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