Ryzen 9 7940HS vs Phenom II X2 555 BE
Primary details
Comparing Phenom II X2 555 BE and Ryzen 9 7940HS processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | 300 |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Laptop |
| Power efficiency | no data | 51.72 |
| Architecture codename | Callisto (2009−2010) | Phoenix-HS (Zen 4) (2023) |
| Release date | 25 January 2010 (14 years ago) | January 2023 (1 year ago) |
Detailed specifications
Phenom II X2 555 BE and Ryzen 9 7940HS 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 | 2 (Dual-core) | 8 (Octa-Core) |
| Threads | 2 | 16 |
| Base clock speed | 3.2 GHz | 4 GHz |
| Boost clock speed | 3.2 GHz | 5.2 GHz |
| L1 cache | 128 KB (per core) | 64K (per core) |
| L2 cache | 512 KB (per core) | 1 MB (per core) |
| L3 cache | 6 MB (shared) | 16 MB (shared) |
| Chip lithography | 45 nm | 4 nm |
| Die size | 258 mm2 | 178 mm2 |
| Maximum core temperature | no data | 100 °C |
| Number of transistors | 758 million | 25,000 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | + |
| Unlocked multiplier | + | - |
Compatibility
Information on Phenom II X2 555 BE and Ryzen 9 7940HS 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 | 1 |
| Socket | AM3 | FP8 |
| Power consumption (TDP) | 80 Watt | 35 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X2 555 BE and Ryzen 9 7940HS. You'll probably need this information if you require some particular technology.
| Instruction set extensions | no data | Ryzen AI, MMX, SSE, SSE2, SSE3, SSSE3, SSE4A, SSE4.1, SSE4.2, AVX, AVX2, AVX-512, BMI2, ABM, FMA, ADX, SMEP, SMAP, SMT, CPB, AES-NI, RDRAND, RDSEED, SHA, SME |
| AES-NI | - | + |
| FMA | - | + |
| AVX | - | + |
| Precision Boost 2 | no data | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X2 555 BE and Ryzen 9 7940HS are enumerated here.
| AMD-V | - | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X2 555 BE and Ryzen 9 7940HS. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR5 |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | no data | AMD Radeon 780M |
Peripherals
Specifications and connection of peripherals supported by Phenom II X2 555 BE and Ryzen 9 7940HS.
| PCIe version | 2.0 | 4.0 |
| PCI Express lanes | no data | 20 |
Pros & cons summary
| Physical cores | 2 | 8 |
| Threads | 2 | 16 |
| Chip lithography | 45 nm | 4 nm |
| Power consumption (TDP) | 80 Watt | 35 Watt |
Ryzen 9 7940HS has 300% more physical cores and 700% more threads, a 1025% more advanced lithography process, and 128.6% lower power consumption.
We couldn't decide between Phenom II X2 555 BE and Ryzen 9 7940HS. We've got no test results to judge.
Note that Phenom II X2 555 BE is a desktop processor while Ryzen 9 7940HS is a notebook one.
Should you still have questions on choice between Phenom II X2 555 BE and Ryzen 9 7940HS, ask them in Comments section, and we shall answer.
Similar processor comparisons
We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.
