i9-13900K vs Xeon E5-2666 V3
Aggregate performance score
Core i9-13900K outperforms Xeon E5-2666 V3 by a whopping 314% based on our aggregate benchmark results.
Primary details
Comparing Xeon E5-2666 V3 and Core i9-13900K processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 854 | 89 |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | no data | 59.83 |
| Market segment | Server | Desktop processor |
| Series | no data | Intel Core i9 |
| Power efficiency | 6.28 | 13.89 |
| Architecture codename | Haswell-EP (2014−2015) | Raptor Lake, Raptor Cove, Gracemont (2022) |
| Release date | 13 November 2014 (10 years ago) | 27 September 2022 (2 years ago) |
| Launch price (MSRP) | no data | $589 |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon E5-2666 V3 and Core i9-13900K 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) | 24 (Tetracosa-Core) |
| Threads | 20 | 32 |
| Base clock speed | 2.9 GHz | 3 GHz |
| Boost clock speed | 3.5 GHz | 5.7 GHz |
| Bus rate | no data | 4 × 16 GT/s |
| Multiplier | no data | 30 |
| L1 cache | 64K (per core) | 1.5 MB |
| L2 cache | 256K (per core) | 16 MB |
| L3 cache | 25 MB (shared) | 12 MB |
| Chip lithography | 22 nm | Intel 7 nm |
| Die size | 356 mm2 | 257 mm2 |
| Maximum core temperature | no data | 100 °C |
| Maximum case temperature (TCase) | no data | 72 °C |
| Number of transistors | 2,600 million | no data |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | + |
| Unlocked multiplier | - | + |
Compatibility
Information on Xeon E5-2666 V3 and Core i9-13900K 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 | 2 | 1 |
| Socket | 2011-3 | FCLGA1700 |
| Power consumption (TDP) | 135 Watt | 125 W, 253 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E5-2666 V3 and Core i9-13900K. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2 |
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | + |
| Enhanced SpeedStep (EIST) | + | + |
| Speed Shift | no data | + |
| Turbo Boost Technology | no data | 2.0 |
| Hyper-Threading Technology | no data | + |
| TSX | + | - |
| Idle States | no data | + |
| Thermal Monitoring | - | + |
| SIPP | - | + |
| Turbo Boost Max 3.0 | no data | + |
| Deep Learning Boost | - | + |
Security technologies
Xeon E5-2666 V3 and Core i9-13900K technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
| EDB | no data | + |
| Secure Key | no data | + |
| OS Guard | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E5-2666 V3 and Core i9-13900K are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
| EPT | no data | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E5-2666 V3 and Core i9-13900K. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3, DDR4 2133 MHz Quad-channel | DDR4, DDR5 |
| Maximum memory size | no data | 192 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 89.604 GB/s |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Intel UHD Graphics 770 |
| Quick Sync Video | - | + |
| Clear Video HD | no data | + |
| Graphics max frequency | no data | 1.65 GHz |
| Execution Units | no data | 32 |
Graphics interfaces
Available interfaces and connections of Xeon E5-2666 V3 and Core i9-13900K integrated GPUs.
| Number of displays supported | no data | 4 |
Graphics image quality
Maximum display resolutions supported by Xeon E5-2666 V3 and Core i9-13900K 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 Xeon E5-2666 V3 and Core i9-13900K integrated GPUs, sometimes API versions are included.
| DirectX | no data | 12 |
| OpenGL | no data | 4.5 |
Peripherals
Specifications and connection of peripherals supported by Xeon E5-2666 V3 and Core i9-13900K.
| PCIe version | 3.0 | 5.0 and 4.0 |
| PCI Express lanes | 40 | 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.
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 | 9.00 | 37.29 |
| Recency | 13 November 2014 | 27 September 2022 |
| Physical cores | 10 | 24 |
| Threads | 20 | 32 |
| Power consumption (TDP) | 135 Watt | 125 Watt |
i9-13900K has a 314.3% higher aggregate performance score, an age advantage of 7 years, 140% more physical cores and 60% more threads, and 8% lower power consumption.
The Core i9-13900K is our recommended choice as it beats the Xeon E5-2666 V3 in performance tests.
Be aware that Xeon E5-2666 V3 is a server/workstation processor while Core i9-13900K is a desktop one.
Should you still have questions on choice between Xeon E5-2666 V3 and Core i9-13900K, ask them in Comments section, and we shall answer.
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