Ultra 9 285T vs Xeon E5-2666 V3
Primary details
Comparing Xeon E5-2666 V3 and Core Ultra 9 285T processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 865 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Desktop processor |
| Power efficiency | 6.23 | no data |
| Architecture codename | Haswell-EP (2014−2015) | Arrow Lake-S (2024−2025) |
| Release date | 13 November 2014 (10 years ago) | January 2025 |
Detailed specifications
Xeon E5-2666 V3 and Core Ultra 9 285T 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 | 24 |
| Base clock speed | 2.9 GHz | 1.4 GHz |
| Boost clock speed | 3.5 GHz | 5.4 GHz |
| L1 cache | 64K (per core) | 112 KB (per core) |
| L2 cache | 256K (per core) | 3 MB (per core) |
| L3 cache | 25 MB (shared) | 36 MB (shared) |
| Chip lithography | 22 nm | 3 nm |
| Die size | 356 mm2 | 243 mm2 |
| Number of transistors | 2,600 million | 17,800 million |
| 64 bit support | + | + |
Compatibility
Information on Xeon E5-2666 V3 and Core Ultra 9 285T 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 | 1851 |
| Power consumption (TDP) | 135 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E5-2666 V3 and Core Ultra 9 285T. You'll probably need this information if you require some particular technology.
| AES-NI | + | + |
| AVX | + | + |
| vPro | + | + |
| Enhanced SpeedStep (EIST) | + | + |
| TSX | + | + |
Security technologies
Xeon E5-2666 V3 and Core Ultra 9 285T technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E5-2666 V3 and Core Ultra 9 285T are enumerated here.
| VT-d | + | + |
| VT-x | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E5-2666 V3 and Core Ultra 9 285T. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3, DDR4 2133 MHz Quad-channel | DDR5 Depends on motherboard |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | Arc Xe2 Graphics 64EU |
Peripherals
Specifications and connection of peripherals supported by Xeon E5-2666 V3 and Core Ultra 9 285T.
| PCIe version | 3.0 | 5.0 |
| PCI Express lanes | 40 | 20 |
Pros & cons summary
| Physical cores | 10 | 24 |
| Threads | 20 | 24 |
| Chip lithography | 22 nm | 3 nm |
| Power consumption (TDP) | 135 Watt | 35 Watt |
Ultra 9 285T has 140% more physical cores and 20% more threads, a 633.3% more advanced lithography process, and 285.7% lower power consumption.
We couldn't decide between Xeon E5-2666 V3 and Core Ultra 9 285T. We've got no test results to judge.
Be aware that Xeon E5-2666 V3 is a server/workstation processor while Core Ultra 9 285T is a desktop one.
Should you still have questions on choice between Xeon E5-2666 V3 and Core Ultra 9 285T, ask them in Comments section, and we shall answer.
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