i9-12900E vs i9-9940X
Aggregate performance score
Core i9-12900E outperforms Core i9-9940X by a minimal 1% based on our aggregate benchmark results.
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 507 | 500 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 3.75 | no data |
| Market segment | Desktop processor | Desktop processor |
| Series | Intel Core i9 | no data |
| Power efficiency | 4.09 | 10.45 |
| Designer | Intel | Intel |
| Manufacturer | Intel | Intel |
| Architecture codename | Skylake (server) (2017−2018) | Alder Lake-S (2022) |
| Release date | 19 October 2018 (7 years ago) | 4 January 2022 (4 years ago) |
| Launch price (MSRP) | $1,387 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Performance to price scatter graph
Detailed specifications
Core i9-9940X and Core i9-12900E 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 | 14 (Tetradeca-Core) | 16 (Hexadeca-Core) |
| Threads | 28 | 24 |
| Base clock speed | 3.3 GHz | 2.3 GHz |
| Boost clock speed | 4.5 GHz | 5 GHz |
| Bus type | DMI 3.0 | no data |
| Bus rate | 4 × 8 GT/s | no data |
| Multiplier | 33 | no data |
| L1 cache | 64 KB (per core) | 80K (per core) |
| L2 cache | 1 MB (per core) | 1.25 MB (per core) |
| L3 cache | 19.25 MB (shared) | 30 MB (shared) |
| Chip lithography | 14 nm | 10 nm |
| Die size | 484 mm2 | 215 mm2 |
| Maximum core temperature | 88 °C | no data |
| Maximum case temperature (TCase) | no data | 72 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | + | + |
| Unlocked multiplier | + | + |
Compatibility
Information on Core i9-9940X and Core i9-12900E 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 | FCLGA2066 | 1700 |
| Power consumption (TDP) | 165 Watt | 65 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i9-9940X and Core i9-12900E. 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 | no data |
| AES-NI | + | + |
| AVX | + | + |
| Enhanced SpeedStep (EIST) | + | + |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| TSX | + | + |
| Turbo Boost Max 3.0 | + | no data |
Security technologies
Core i9-9940X and Core i9-12900E technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i9-9940X and Core i9-12900E are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i9-9940X and Core i9-12900E. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2666 | DDR4, DDR5 Dual-channel |
| Maximum memory size | 128 GB | no data |
| Max memory channels | 4 | no data |
| Maximum memory bandwidth | 85.33 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | Intel UHD Graphics 770 |
Peripherals
Specifications and connection of peripherals supported by Core i9-9940X and Core i9-12900E.
| PCIe version | 3.0 | 5.0 |
| PCI Express lanes | 44 | 20 |
Synthetic benchmarks
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.
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. Other than that, Passmark measures multi-core performance.
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.
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.
Pros & cons summary
| Performance score | 16.00 | 16.10 |
| Recency | 19 October 2018 | 4 January 2022 |
| Physical cores | 14 | 16 |
| Threads | 28 | 24 |
| Chip lithography | 14 nm | 10 nm |
| Power consumption (TDP) | 165 Watt | 65 Watt |
i9-9940X has 17% more threads.
i9-12900E, on the other hand, has a 1% higher aggregate performance score, an age advantage of 3 years, 14% more physical cores, a 40% more advanced lithography process, and 154% lower power consumption.
Given the minimal performance differences, no clear winner can be declared between Intel Core i9-9940X and Intel Core i9-12900E.
Other comparisons
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