Phenom II X4 955 (95W) vs Xeon W-2155
Primary details
Comparing Xeon W-2155 and Phenom II X4 955 (95W) processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 549 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 8.00 | no data |
| Market segment | Server | Desktop processor |
| Series | Intel Xeon W | no data |
| Power efficiency | 8.96 | no data |
| Architecture codename | Skylake (server) (2017−2019) | Deneb (2009−2011) |
| Release date | 29 August 2017 (7 years ago) | 1 April 2009 (15 years ago) |
| Launch price (MSRP) | $1,440 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Xeon W-2155 and Phenom II X4 955 (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 | 3.3 GHz | 3.2 GHz |
| Boost clock speed | 4.5 GHz | 3.2 GHz |
| Bus type | DMI 3.0 | no data |
| Bus rate | 4 × 8 GT/s | no data |
| Multiplier | 33 | no data |
| L1 cache | 640 KB | 128 KB (per core) |
| L2 cache | 10 MB | 512 KB (per core) |
| L3 cache | 13.75 MB (shared) | 6 MB (shared) |
| Chip lithography | 14 nm | 45 nm |
| Die size | 484 mm2 | 258 mm2 |
| Maximum case temperature (TCase) | 68 °C | no data |
| Number of transistors | no data | 758 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | - |
Compatibility
Information on Xeon W-2155 and Phenom II X4 955 (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 | 1 (Uniprocessor) | 1 |
| Socket | FCLGA2066 | AM3 |
| Power consumption (TDP) | 140 Watt | 95 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Xeon W-2155 and Phenom II X4 955 (95W). You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2, Intel® AVX, Intel® AVX2, Intel® AVX-512 | no data |
| AES-NI | + | - |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
| Speed Shift | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| TSX | + | - |
| Idle States | + | no data |
| Thermal Monitoring | + | - |
| Flex Memory Access | - | no data |
| Demand Based Switching | + | no data |
| PAE | 46 Bit | no data |
| Turbo Boost Max 3.0 | - | no data |
| Status | Discontinued | no data |
Security technologies
Xeon W-2155 and Phenom II X4 955 (95W) technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | no data |
| EDB | + | no data |
| Secure Key | + | no data |
| MPX | + | - |
| Identity Protection | + | - |
| SGX | - | no data |
| OS Guard | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Xeon W-2155 and Phenom II X4 955 (95W) are enumerated here.
| AMD-V | - | + |
| VT-d | + | no data |
| VT-x | + | no data |
| EPT | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Xeon W-2155 and Phenom II X4 955 (95W). Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4-1600, DDR4-1866, DDR4-2133, DDR4-2400, DDR4-2666 | DDR3 |
| Maximum memory size | 512 GB | no data |
| Max memory channels | 4 | no data |
| Maximum memory bandwidth | 85.33 GB/s | no data |
| ECC memory support | + | - |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | On certain motherboards (Chipset feature) |
Peripherals
Specifications and connection of peripherals supported by Xeon W-2155 and Phenom II X4 955 (95W).
| PCIe version | 3.0 | 2.0 |
| PCI Express lanes | 48 | no data |
Pros & cons summary
| Recency | 29 August 2017 | 1 April 2009 |
| Physical cores | 10 | 4 |
| Threads | 20 | 4 |
| Chip lithography | 14 nm | 45 nm |
| Power consumption (TDP) | 140 Watt | 95 Watt |
Xeon W-2155 has an age advantage of 8 years, 150% more physical cores and 400% more threads, and a 221.4% more advanced lithography process.
Phenom II X4 955 (95W), on the other hand, has 47.4% lower power consumption.
We couldn't decide between Xeon W-2155 and Phenom II X4 955 (95W). We've got no test results to judge.
Be aware that Xeon W-2155 is a server/workstation processor while Phenom II X4 955 (95W) is a desktop one.
Should you still have questions on choice between Xeon W-2155 and Phenom II X4 955 (95W), ask them in Comments section, and we shall answer.
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