Xeon Gold 6438Y+ vs i9-9940X
Aggregate performance score
Xeon Gold 6438Y+ outperforms Core i9-9940X by a whopping 123% 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 | 466 | 111 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 4.16 | 11.26 |
| Market segment | Desktop processor | Server |
| Series | Intel Core i9 | no data |
| Power efficiency | 4.10 | 7.36 |
| Designer | Intel | Intel |
| Manufacturer | Intel | Intel |
| Architecture codename | Skylake (server) (2017−2018) | Sapphire Rapids (2023−2024) |
| Release date | 19 October 2018 (7 years ago) | 10 January 2023 (2 years ago) |
| Launch price (MSRP) | $1,387 | $3,141 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Xeon Gold 6438Y+ has 171% better value for money than i9-9940X.
Performance to price scatter graph
Detailed specifications
Core i9-9940X and Xeon Gold 6438Y+ 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) | 32 (Dotriaconta-Core) |
| Threads | 28 | 64 |
| Base clock speed | 3.3 GHz | 2 GHz |
| Boost clock speed | 4.5 GHz | 4 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) | 2 MB (per core) |
| L3 cache | 19.25 MB (shared) | 60 MB |
| Chip lithography | 14 nm | 10 nm |
| Die size | 484 mm2 | no data |
| Maximum core temperature | 88 °C | no data |
| Maximum case temperature (TCase) | no data | 85 °C |
| 64 bit support | + | + |
| Windows 11 compatibility | + | + |
| Unlocked multiplier | + | - |
Compatibility
Information on Core i9-9940X and Xeon Gold 6438Y+ 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 | 4677 |
| Power consumption (TDP) | 165 Watt | 205 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i9-9940X and Xeon Gold 6438Y+. 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 | + | + |
| vPro | no data | + |
| 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 Xeon Gold 6438Y+ 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 Xeon Gold 6438Y+ are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i9-9940X and Xeon Gold 6438Y+. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-2666 | DDR5-4800 |
| 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 | no data |
Peripherals
Specifications and connection of peripherals supported by Core i9-9940X and Xeon Gold 6438Y+.
| PCIe version | 3.0 | 5.0 |
| PCI Express lanes | 44 | 80 |
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 | 15.90 | 35.46 |
| Recency | 19 October 2018 | 10 January 2023 |
| Physical cores | 14 | 32 |
| Threads | 28 | 64 |
| Chip lithography | 14 nm | 10 nm |
| Power consumption (TDP) | 165 Watt | 205 Watt |
i9-9940X has 24.2% lower power consumption.
Xeon Gold 6438Y+, on the other hand, has a 123% higher aggregate performance score, an age advantage of 4 years, 128.6% more physical cores and 128.6% more threads, and a 40% more advanced lithography process.
The Intel Xeon Gold 6438Y+ is our recommended choice as it beats the Intel Core i9-9940X in performance tests.
Note that Core i9-9940X is a desktop processor while Xeon Gold 6438Y+ is a server/workstation one.
Other comparisons
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