Xeon Gold 6438N vs i7-940
Aggregate performance score
Xeon Gold 6438N outperforms Core i7-940 by a whopping 1687% based on our aggregate benchmark results.
Primary details
Comparing Core i7-940 and Xeon Gold 6438N processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 1984 | 117 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 0.24 | 25.75 |
| Market segment | Desktop processor | Server |
| Series | Core i7 (Desktop) | no data |
| Power efficiency | 1.35 | 15.34 |
| Architecture codename | Bloomfield (2008−2010) | Sapphire Rapids (2023−2024) |
| Release date | November 2008 (16 years ago) | 10 January 2023 (1 year ago) |
| Launch price (MSRP) | $299 | $3,351 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Xeon Gold 6438N has 10629% better value for money than i7-940.
Detailed specifications
Core i7-940 and Xeon Gold 6438N 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 | 4 (Quad-Core) | 32 (Dotriaconta-Core) |
| Threads | 8 | 64 |
| Base clock speed | 2.93 GHz | 2 GHz |
| Boost clock speed | 3.2 GHz | 3.6 GHz |
| Bus rate | 1333 MHz | no data |
| L1 cache | 64 KB (per core) | 80K (per core) |
| L2 cache | 256 KB (per core) | 2 MB (per core) |
| L3 cache | 8 MB (shared) | 60 MB |
| Chip lithography | 45 nm | Intel 7 nm |
| Die size | 263 mm2 | no data |
| Maximum core temperature | 68 °C | no data |
| Maximum case temperature (TCase) | no data | 85 °C |
| Number of transistors | 731 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | - | no data |
Compatibility
Information on Core i7-940 and Xeon Gold 6438N 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 | 2 |
| Socket | FCLGA1366 | FCLGA4677 |
| Power consumption (TDP) | 130 Watt | 205 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i7-940 and Xeon Gold 6438N. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2 | 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 | 1.0 | 2.0 |
| Hyper-Threading Technology | + | + |
| TSX | - | + |
| Idle States | + | no data |
| Demand Based Switching | - | no data |
| PAE | 36 Bit | no data |
| Deep Learning Boost | - | + |
Security technologies
Core i7-940 and Xeon Gold 6438N technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | + | + |
| SGX | no data | Yes with Intel® SPS |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i7-940 and Xeon Gold 6438N are enumerated here.
| VT-d | no data | + |
| VT-x | + | + |
| EPT | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i7-940 and Xeon Gold 6438N. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR5-4800, DDR5-4400 |
| Maximum memory size | 24 GB | 4 TB |
| Max memory channels | 3 | 8 |
| Maximum memory bandwidth | 25.6 GB/s | no data |
| ECC memory support | - | + |
Peripherals
Specifications and connection of peripherals supported by Core i7-940 and Xeon Gold 6438N.
| PCIe version | no data | 5 |
| PCI Express lanes | no data | 80 |
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.
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.
Pros & cons summary
| Performance score | 1.86 | 33.23 |
| Physical cores | 4 | 32 |
| Threads | 8 | 64 |
| Power consumption (TDP) | 130 Watt | 205 Watt |
i7-940 has 57.7% lower power consumption.
Xeon Gold 6438N, on the other hand, has a 1686.6% higher aggregate performance score, and 700% more physical cores and 700% more threads.
The Xeon Gold 6438N is our recommended choice as it beats the Core i7-940 in performance tests.
Note that Core i7-940 is a desktop processor while Xeon Gold 6438N is a server/workstation one.
Should you still have questions on choice between Core i7-940 and Xeon Gold 6438N, ask them in Comments section, and we shall answer.
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