Ryzen 9 7945HX vs Core i9-7900X
Aggregated performance score
Ryzen 9 7945HX outperforms Core i9-7900X by 159% based on our aggregated benchmark results.
Primary Details
Comparing Core i9-7900X and Ryzen 9 7945HX processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 486 | 88 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-Effectiveness Evaluation | 8.30 | no data |
| Market segment | Desktop processor | Laptop |
| Series | Core i9 (Desktop) | no data |
| Architecture codename | Skylake-X (2018) | Dragon Range-HX (Zen 4) |
| Release date | 26 June 2017 (6 years ago) | 4 January 2023 (1 year ago) |
| Launch price (MSRP) | $999 | no data |
| Current price | $540 (0.5x MSRP) | no data |
Cost-Effectiveness Evaluation
Performance per price, higher is better.
Detailed Specifications
Core i9-7900X and Ryzen 9 7945HX 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 | 10 (Deca-Core) | 16 (Hexadeca-Core) |
| Threads | 20 | 32 |
| Base clock speed | 3.3 GHz | 2.5 GHz |
| Boost clock speed | 4.5 GHz | 5.4 GHz |
| L1 cache | 64 KB (per core) | 64K (per core) |
| L2 cache | 1 MB (per core) | 1 MB (per core) |
| L3 cache | 14 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 | 95 °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 i9-7900X and Ryzen 9 7945HX 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 | Socket R4 | FL1 |
| Power consumption (TDP) | 140 Watt | 55 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i9-7900X and Ryzen 9 7945HX. 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 |
| Turbo Boost Max 3.0 | + | no data |
| Status | Discontinued | no data |
Security technologies
Core i9-7900X and Ryzen 9 7945HX technologies aimed at improving security, for example, by protecting against hacks.
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i9-7900X and Ryzen 9 7945HX are enumerated here.
| AMD-V | + | + |
| VT-d | + | no data |
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i9-7900X and Ryzen 9 7945HX. 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 | 4 | no data |
| Maximum memory bandwidth | 85 GB/s | no data |
| ECC memory support | - | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | AMD Radeon 610M |
Peripherals
Specifications and connection of peripherals supported by Core i9-7900X and Ryzen 9 7945HX.
| PCIe version | 3.0 | 5.0 |
| PCI Express lanes | 44 | 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 7945HX outperforms Core i9-7900X by 159% based on our aggregated 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 7945HX outperforms Core i9-7900X by 159% 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 7945HX outperforms Core i9-7900X by 92% 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 7945HX outperforms Core i9-7900X by 80% in GeekBench 5 Multi-Core.
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.
Benchmark coverage: 20%
Ryzen 9 7945HX outperforms Core i9-7900X by 16% in Cinebench 10 32-bit single-core.
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.
Benchmark coverage: 19%
Ryzen 9 7945HX outperforms Core i9-7900X by 44% in Cinebench 10 32-bit multi-core.
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.
Benchmark coverage: 18%
Ryzen 9 7945HX outperforms Core i9-7900X by 68% in wPrime 32.
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.
Benchmark coverage: 17%
Ryzen 9 7945HX outperforms Core i9-7900X by 169% in Cinebench 11.5 64-bit 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 7945HX outperforms Core i9-7900X by 158% 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 7945HX outperforms Core i9-7900X by 59% in Cinebench 15 64-bit single-core.
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.
Benchmark coverage: 14%
Ryzen 9 7945HX outperforms Core i9-7900X by 66% in Cinebench 11.5 64-bit single-core.
TrueCrypt AES
TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.
Benchmark coverage: 13%
Ryzen 9 7945HX outperforms Core i9-7900X by 109% in TrueCrypt AES.
Pros & Cons Summary
| Performance score | 13.69 | 35.51 |
| Recency | 26 June 2017 | 4 January 2023 |
| Physical cores | 10 | 16 |
| Threads | 20 | 32 |
| Power consumption (TDP) | 140 Watt | 55 Watt |
The Ryzen 9 7945HX is our recommended choice as it beats the Core i9-7900X in performance tests.
Note that Core i9-7900X is a desktop processor while Ryzen 9 7945HX is a notebook one.
Should you still have questions on choice between Core i9-7900X and Ryzen 9 7945HX, ask them in Comments section, and we shall answer.
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