Performance per price, higher is better.
Core i9-12900KS vs Core i9-7900X
Aggregated performance score
Core i9-7900X
2017
10 cores / 20 threads
13.82
Core i9-12900KS outperforms Core i9-7900X by 109% based on our aggregated benchmark results.
General info
Comparing Core i9-7900X and Core i9-12900KS processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 479 | 145 |
| Place by popularity | not in top-100 | not in top-100 |
| Value for money | 8.18 | 64.28 |
| Market segment | Desktop processor | Desktop processor |
| Series | Core i9 (Desktop) | no data |
| Architecture codename | Skylake-X (2018) | Alder Lake-S (2022) |
| Release date | 26 June 2017 (6 years old) | 5 April 2022 (2 years old) |
| Launch price (MSRP) | $999 | no data |
| Current price | $577 (0.6x MSRP) | $458 |
Value for money
i9-12900KS has 686% better value for money than i9-7900X.
Technical specs
Core i9-7900X and Core i9-12900KS 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 | 24 |
| Base clock speed | 3.3 GHz | 3.4 GHz |
| Boost clock speed | 4.5 GHz | 5.3 GHz |
| L1 cache | 64 KB (per core) | 80K (per core) |
| L2 cache | 1 MB (per core) | 1.25 MB (per core) |
| L3 cache | 14 MB (shared) | 30 MB (shared) |
| Chip lithography | 14 nm | Intel 7 nm |
| Die size | no data | 215 mm2 |
| Maximum core temperature | 95 °C | 90 °C |
| Maximum case temperature (TCase) | 72 °C | 72 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | + | + |
| Unlocked multiplier | Yes | Yes |
Compatibility
Information on Core i9-7900X and Core i9-12900KS 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 | FCLGA1700 |
| Power consumption (TDP) | 140 Watt | 150 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i9-7900X and Core i9-12900KS. 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 | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 |
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | 2.0 | 2.0 |
| Hyper-Threading Technology | + | + |
| TSX | + | + |
| Idle States | no data | + |
| Thermal Monitoring | no data | + |
| Turbo Boost Max 3.0 | + | + |
| Status | Discontinued | Launched |
Security technologies
Core i9-7900X and Core i9-12900KS technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | + | + |
| Secure Key | no data | + |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i9-7900X and Core i9-12900KS are enumerated here.
| AMD-V | + | no data |
| VT-d | + | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i9-7900X and Core i9-12900KS. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 | DDR5-4800, DDR4-3200 |
| Maximum memory size | 128 GB | 128 GB |
| Max memory channels | 4 | 2 |
| Maximum memory bandwidth | 85 GB/s | 76.8 GB/s |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | Intel UHD Graphics 770 |
| Quick Sync Video | no data | + |
| Clear Video HD | no data | + |
| Graphics max frequency | no data | 1.55 GHz |
| Execution Units | no data | 32 |
Graphics interfaces
Available interfaces and connections of Core i9-7900X and Core i9-12900KS integrated GPUs.
| Number of displays supported | no data | 4 |
Graphics image quality
Maximum display resolutions supported by Core i9-7900X and Core i9-12900KS integrated GPUs, including resolutions over different interfaces.
| Max resolution over HDMI 1.4 | no data | 4096 x 2160 @ 60Hz |
| Max resolution over eDP | no data | 5120 x 3200 @ 120Hz |
| Max resolution over DisplayPort | no data | 7680 x 4320 @ 60Hz |
Graphics API support
APIs supported by Core i9-7900X and Core i9-12900KS integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12 |
| OpenGL | no data | 4.5 |
Peripherals
Specifications and connection of peripherals supported by Core i9-7900X and Core i9-12900KS.
| PCIe version | 3.0 | 5.0 and 4.0 |
| PCI Express lanes | 44 | 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.
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.
Core i9-12900KS outperforms Core i9-7900X by 109% 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%
Core i9-12900KS outperforms Core i9-7900X by 109% 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%
Core i9-12900KS outperforms Core i9-7900X by 88% 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%
Core i9-12900KS outperforms Core i9-7900X by 83% in GeekBench 5 Multi-Core.
Advantages and disadvantages
| Performance score | 13.82 | 28.83 |
| Recency | 26 June 2017 | 5 April 2022 |
| Physical cores | 10 | 16 |
| Threads | 20 | 24 |
| Power consumption (TDP) | 140 Watt | 150 Watt |
The Core i9-12900KS is our recommended choice as it beats the Core i9-7900X in performance tests.
Should you still have questions on choice between Core i9-7900X and Core i9-12900KS, ask them in Comments section, and we shall answer.
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