Phenom II X4 955 (95W) vs i9-7900X
Primary details
Comparing Core i9-7900X and Phenom II X4 955 (95W) processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | 560 | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Cost-effectiveness evaluation | 2.80 | no data |
| Market segment | Desktop processor | Desktop processor |
| Series | Core i9 (Desktop) | no data |
| Power efficiency | 8.95 | no data |
| Architecture codename | Skylake (server) (2017−2019) | Deneb (2009−2011) |
| Release date | 30 May 2017 (7 years ago) | 1 April 2009 (15 years ago) |
| Launch price (MSRP) | $999 | no data |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Core i9-7900X 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 | 6 MB (shared) |
| Chip lithography | 14 nm | 45 nm |
| Die size | no data | 258 mm2 |
| Maximum core temperature | 95 °C | no data |
| Maximum case temperature (TCase) | 72 °C | no data |
| Number of transistors | no data | 758 million |
| 64 bit support | + | + |
| Windows 11 compatibility | + | - |
| Unlocked multiplier | + | - |
Compatibility
Information on Core i9-7900X 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 | Socket R4 | AM3 |
| Power consumption (TDP) | 140 Watt | 95 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Core i9-7900X and Phenom II X4 955 (95W). You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2, Intel® AVX-512 | no data |
| AES-NI | + | - |
| AVX | + | - |
| vPro | + | no data |
| Enhanced SpeedStep (EIST) | + | no data |
| Turbo Boost Technology | 2.0 | no data |
| Hyper-Threading Technology | + | no data |
| TSX | + | - |
| Turbo Boost Max 3.0 | + | no data |
Security technologies
Core i9-7900X and Phenom II X4 955 (95W) technologies aimed at improving security, for example, by protecting against hacks.
| EDB | + | no data |
Virtualization technologies
Virtual machine speed-up technologies supported by Core i9-7900X and Phenom II X4 955 (95W) are enumerated here.
| AMD-V | + | + |
| VT-d | + | no data |
| VT-x | + | no data |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Core i9-7900X and Phenom II X4 955 (95W). Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR4 | DDR3 |
| Maximum memory size | 128 GB | no data |
| Max memory channels | 4 | no data |
| Maximum memory bandwidth | 85.33 GB/s | no data |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | N/A | On certain motherboards (Chipset feature) |
Peripherals
Specifications and connection of peripherals supported by Core i9-7900X and Phenom II X4 955 (95W).
| PCIe version | 3.0 | 2.0 |
| PCI Express lanes | 44 | no data |
Pros & cons summary
| Recency | 30 May 2017 | 1 April 2009 |
| Physical cores | 10 | 4 |
| Threads | 20 | 4 |
| Chip lithography | 14 nm | 45 nm |
| Power consumption (TDP) | 140 Watt | 95 Watt |
i9-7900X 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 Core i9-7900X and Phenom II X4 955 (95W). We've got no test results to judge.
Should you still have questions on choice between Core i9-7900X and Phenom II X4 955 (95W), ask them in Comments section, and we shall answer.
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