Phenom II X4 945 (95W) vs Xeon E5-2666 V3
Primary details
Comparing Xeon E5-2666 V3 and Phenom II X4 945 (95W) processor market type (desktop or notebook), architecture, sales start time and price.
| Place in performance ranking | 775 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Server | Desktop processor |
| Architecture codename | Haswell-EP (2014) | Deneb (2009−2011) |
| Release date | 13 November 2014 (9 years ago) | July 2009 (14 years ago) |
| Current price | $59 | $33 |
Detailed specifications
Xeon E5-2666 V3 and Phenom II X4 945 (95W) 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) | 4 (Quad-Core) |
| Threads | 20 | 4 |
| Base clock speed | 2.9 GHz | no data |
| Boost clock speed | 3.5 GHz | 3 GHz |
| L1 cache | 64K (per core) | 128 KB (per core) |
| L2 cache | 256K (per core) | 512 KB (per core) |
| L3 cache | 25 MB (shared) | 6 MB (shared) |
| Chip lithography | 22 nm | 45 nm |
| Die size | 356 mm2 | 258 mm2 |
| Number of transistors | 2,600 million | 758 million |
| 64 bit support | + | + |
| Windows 11 compatibility | no data | - |
| Unlocked multiplier | No | No |
Compatibility
Information on Xeon E5-2666 V3 and Phenom II X4 945 (95W) 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 | AM3 |
| Power consumption (TDP) | 135 Watt | 95 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon E5-2666 V3 and Phenom II X4 945 (95W). You'll probably need this information if you require some particular technology.
| AES-NI | + | no data |
| AVX | + | no data |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
| TSX | + | no data |
Security technologies
Xeon E5-2666 V3 and Phenom II X4 945 (95W) technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon E5-2666 V3 and Phenom II X4 945 (95W) are enumerated here.
| VT-d | + | no data |
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon E5-2666 V3 and Phenom II X4 945 (95W). Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3, DDR42133 MHz Quad-channel | DDR3 |
Peripherals
Specifications and connection of peripherals supported by Xeon E5-2666 V3 and Phenom II X4 945 (95W).
| PCIe version | 3.0 | no data |
| PCI Express lanes | 40 | no data |
Pros & cons summary
| Physical cores | 10 | 4 |
| Threads | 20 | 4 |
| Chip lithography | 22 nm | 45 nm |
| Power consumption (TDP) | 135 Watt | 95 Watt |
We couldn't decide between Xeon E5-2666 V3 and Phenom II X4 945 (95W). We've got no test results to judge.
Be aware that Xeon E5-2666 V3 is a server/workstation processor while Phenom II X4 945 (95W) is a desktop one.
Should you still have questions on choice between Xeon E5-2666 V3 and Phenom II X4 945 (95W), ask them in Comments section, and we shall answer.
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