EPYC Embedded 3255 vs Phenom II X4 955 (125W)
Contents
Primary details
Comparing processor market type (desktop or notebook), architecture, sales start time and price.
| Place in the ranking | not rated | not rated |
| Place by popularity | not in top-100 | not in top-100 |
| Market segment | Desktop processor | Server |
| Series | no data | AMD EPYC Embedded |
| Designer | AMD | AMD |
| Manufacturer | no data | GlobalFoundries |
| Architecture codename | Deneb (2009−2011) | Zen (2017−2020) |
| Release date | 1 April 2009 (16 years ago) | 21 February 2018 (7 years ago) |
Detailed specifications
Phenom II X4 955 (125W) and EPYC Embedded 3255 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 | 4 (Quad-Core) | 8 (Octa-Core) |
| Threads | 4 | 16 |
| Base clock speed | 3.2 GHz | 2.5 GHz |
| Boost clock speed | 3.2 GHz | 3.1 GHz |
| Multiplier | no data | 25 |
| L1 cache | 128 KB (per core) | 96K (per core) |
| L2 cache | 512 KB (per core) | 512K (per core) |
| L3 cache | 6 MB (shared) | 16 MB (shared) |
| Chip lithography | 45 nm | 14 nm |
| Die size | 258 mm2 | 213 mm2 |
| Number of transistors | 758 million | 4,800 million |
| 64 bit support | + | + |
| Windows 11 compatibility | - | - |
Compatibility
Information on Phenom II X4 955 (125W) and EPYC Embedded 3255 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 | AMD BGA SP4r2 |
| Power consumption (TDP) | 125 Watt | 55 Watt |
Technologies and extensions
Technological solutions and additional instructions supported by Phenom II X4 955 (125W) and EPYC Embedded 3255. You'll probably need this information if you require some particular technology.
| AES-NI | - | + |
| AVX | - | + |
Virtualization technologies
Virtual machine speed-up technologies supported by Phenom II X4 955 (125W) and EPYC Embedded 3255 are enumerated here.
| AMD-V | + | + |
Memory specs
Types, maximum amount and channel quantity of RAM supported by Phenom II X4 955 (125W) and EPYC Embedded 3255. Depending on the motherboard, higher memory frequencies may be supported.
| Supported memory types | DDR3 | DDR4-2666 |
| Maximum memory size | no data | 512 GB |
| Max memory channels | no data | 2 |
| Maximum memory bandwidth | no data | 42.671 GB/s |
| ECC memory support | - | + |
Graphics specifications
General parameters of integrated GPUs, if any.
| Integrated graphics card | On certain motherboards (Chipset feature) | no data |
Peripherals
Specifications and connection of peripherals supported by Phenom II X4 955 (125W) and EPYC Embedded 3255.
| PCIe version | 2.0 | 3.0 |
| PCI Express lanes | no data | 32 |
Pros & cons summary
| Recency | 1 April 2009 | 21 February 2018 |
| Physical cores | 4 | 8 |
| Threads | 4 | 16 |
| Chip lithography | 45 nm | 14 nm |
| Power consumption (TDP) | 125 Watt | 55 Watt |
EPYC Embedded 3255 has an age advantage of 8 years, 100% more physical cores and 300% more threads, a 221.4% more advanced lithography process, and 127.3% lower power consumption.
We couldn't decide between AMD Phenom II X4 955 (125W) and AMD EPYC Embedded 3255. We've got no test results to judge.
Note that Phenom II X4 955 (125W) is a desktop processor while EPYC Embedded 3255 is a server/workstation one.
Other comparisons
We've compiled a selection of CPU comparisons, ranging from closely matched processors to other comparisons that may be of interest.
