Xeon Silver 4509Y vs i9-9940X
Primary details
Comparing Core i9-9940X and Xeon Silver 4509Y processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 350 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 5.11 | no data |
| Market segment | Desktop processor | Server |
| Series | Intel Core i9 | no data |
| Power efficiency | 10.10 | no data |
| Architecture codename | Skylake (server) (2017−2018) | Sapphire Rapids (2023−2024) |
| Release date | 19 October 2018 (6 years ago) | 14 December 2023 (less than a year ago) |
| Launch price (MSRP) | $1,387 | $563 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i9-9940X and Xeon Silver 4509Y 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) | 8 (Octa-Core) |
| Threads | 28 | 16 |
| Base clock speed | 3.3 GHz | 2.6 GHz |
| Boost clock speed | 4.5 GHz | 4.1 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) | 80 KB (per core) |
| L2 cache | 1 MB (per core) | 2 MB (per core) |
| L3 cache | 19.25 MB (shared) | 22.5 MB (shared) |
| Chip lithography | 14 nm | Intel 7 nm |
| Die size | 484 mm2 | no data |
| Maximum core temperature | 88 °C | no data |
| Maximum case temperature (TCase) | no data | 84 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | + | no data |
| Unlocked multiplier | + | - |
Compatibility
Information on Core i9-9940X and Xeon Silver 4509Y 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) | 2 |
| Socket | FCLGA2066 | FCLGA4677 |
| Power consumption (TDP) | 165 Watt | 125 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i9-9940X and Xeon Silver 4509Y. 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® AMX, Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 |
| AES-NI | + | + |
| AVX | + | + |
| vPro | no data | + |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | 2.0 | 2.0 |
| Hyper-Threading Technology | + | + |
| TSX | + | + |
| Turbo Boost Max 3.0 | + | no data |
| Deep Learning Boost | - | + |
Security technologies
Core i9-9940X and Xeon Silver 4509Y technologies aimed at improving security, for example, by protecting against hacks.
| TXT | no data | + |
| EDB | + | + |
| SGX | no data | Yes with Intel® SPS |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i9-9940X and Xeon Silver 4509Y are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i9-9940X and Xeon Silver 4509Y. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2666 | DDR5 @ 4400 MT/s (1 DPC &2DPC) |
| Maximum memory size | 128 GB | 4 TB |
| Max memory channels | 4 | 8 |
| Maximum memory bandwidth | 85.33 GB/s | no data |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | N/A |
Peripherals
Specifications and connection of peripherals supported by Core i9-9940X and Xeon Silver 4509Y.
| PCIe version | 3.0 | 5 |
| PCI Express lanes | 44 | 80 |
Pros & cons summary
| Recency | 19 October 2018 | 14 December 2023 |
| Physical cores | 14 | 8 |
| Threads | 28 | 16 |
| Power consumption (TDP) | 165 Watt | 125 Watt |
i9-9940X has 75% more physical cores and 75% more threads.
Xeon Silver 4509Y, on the other hand, has an age advantage of 5 years, and 32% lower power consumption.
We couldn't decide between Core i9-9940X and Xeon Silver 4509Y. We've got no test results to judge.
Note that Core i9-9940X is a desktop processor while Xeon Silver 4509Y is a server/workstation one.
Should you still have questions on choice between Core i9-9940X and Xeon Silver 4509Y, ask them in Comments section, and we shall answer.
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