AMD EPYC 7451 vs AMD Phenom II X2 555
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CPU comparison with benchmarks
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| AMD EPYC 7451 | AMD Phenom II X2 555 | |
CPU comparisonAMD EPYC 7451 or AMD Phenom II X2 555 - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.
The AMD EPYC 7451 has 24 cores with 48 threads and clocks with a maximum frequency of 3.20 GHz. Up to GB of memory is supported in 8 memory channels. The AMD EPYC 7451 was released in Q3/2017. The AMD Phenom II X2 555 has 2 cores with 2 threads and clocks with a maximum frequency of 3.20 GHz. The CPU supports up to GB of memory in 2 memory channels. The AMD Phenom II X2 555 was released in Q2/2010. |
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| AMD EPYC (129) | Family | AMD Phenom II (52) |
| AMD EPYC 7001 (12) | CPU group | AMD Phenom II - 545 (9) |
| 1 | Generation | 2 |
| Naples (Zen) | Architecture | Callisto (K10) |
| Desktop / Server | Segment | Desktop / Server |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD EPYC 7451 has 24 CPU cores and can calculate 48 threads in parallel. The clock frequency of the AMD EPYC 7451 is 2.30 GHz (3.20 GHz) while the AMD Phenom II X2 555 has 2 CPU cores and 2 threads can calculate simultaneously. The clock frequency of the AMD Phenom II X2 555 is at 3.20 GHz. |
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| AMD EPYC 7451 | Characteristic | AMD Phenom II X2 555 |
| 24 | Cores | 2 |
| 48 | Threads | 2 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | No |
| No | Overclocking ? | Yes |
| 2.30 GHz | Frequency | 3.20 GHz |
| 3.20 GHz | Turbo Frequency (1 Core) | -- |
| 2.90 GHz | Turbo Frequency (All Cores) | -- |
Memory & PCIeThe AMD EPYC 7451 can use up to GB of memory in 8 memory channels. The maximum memory bandwidth is 170.6 GB/s. The AMD Phenom II X2 555 supports up to GB of memory in 2 memory channels and achieves a memory bandwidth of up to 21.3 GB/s. |
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| AMD EPYC 7451 | Characteristic | AMD Phenom II X2 555 |
| DDR4-2666 | Memory | DDR3-1333, DDR2-1066 |
| Max. Memory | ||
| 8 (Octa Channel) | Memory channels | 2 (Dual Channel) |
| 170.6 GB/s | Max. Bandwidth | 21.3 GB/s |
| Yes | ECC | No |
| -- | L2 Cache | -- |
| 64.00 MB | L3 Cache | 6.00 MB |
| 3.0 | PCIe version | -- |
| 128 | PCIe lanes | -- |
| 126.1 GB/s | PCIe Bandwidth | -- |
Thermal ManagementThe thermal design power (TDP for short) of the AMD EPYC 7451 is 180 W, while the AMD Phenom II X2 555 has a TDP of 80 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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| AMD EPYC 7451 | Characteristic | AMD Phenom II X2 555 |
| 180 W | TDP (PL1 / PBP) | 80 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | -- |
| -- | Tjunction max. | -- |
Technical detailsThe AMD EPYC 7451 is manufactured in 14 nm and has 64.00 MB cache. The AMD Phenom II X2 555 is manufactured in 45 nm and has a 6.00 MB cache. |
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| AMD EPYC 7451 | Characteristic | AMD Phenom II X2 555 |
| 14 nm | Technology | 45 nm |
| Chiplet | Chip design | Unknown |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 | ISA extensions | SSE3, SSE4a |
| SP3 | Socket | AM3 |
| AMD-V, SVM | Virtualization | AMD-V |
| Yes | AES-NI | No |
| Windows 10, Linux | Operating systems | Windows 10, Linux |
| Q3/2017 | Release date | Q2/2010 |
| 2400 $ | Release price | -- |
| show more data | show more data | |
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Rate these processors
Average performance in benchmarks
⌀ Single core performance in 2 CPU benchmarks
⌀ Multi core performance in 3 CPU benchmarks
Geekbench 5, 64bit (Single-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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AMD EPYC 7451
24C 48T @ 3.20 GHz |
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AMD Phenom II X2 555
2C 2T @ 3.20 GHz |
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Geekbench 5, 64bit (Multi-Core)
Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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AMD EPYC 7451
24C 48T @ 2.90 GHz |
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AMD Phenom II X2 555
2C 2T @ 3.20 GHz |
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Estimated results for PassMark CPU Mark
Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
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AMD EPYC 7451
24C 48T @ 2.90 GHz |
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AMD Phenom II X2 555
2C 2T @ 3.20 GHz |
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Cinebench R15 (Single-Core)
Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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AMD EPYC 7451
24C 48T @ 3.20 GHz |
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AMD Phenom II X2 555
2C 2T @ 3.20 GHz |
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Cinebench R15 (Multi-Core)
Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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AMD EPYC 7451
24C 48T @ 2.90 GHz |
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AMD Phenom II X2 555
2C 2T @ 3.20 GHz |
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Cinebench R20 (Single-Core)
Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
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AMD EPYC 7451
24C 48T @ 3.20 GHz |
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AMD Phenom II X2 555
2C 2T @ 3.20 GHz |
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Cinebench R20 (Multi-Core)
Cinebench R20 is the successor of Cinebench R15 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
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AMD EPYC 7451
24C 48T @ 2.90 GHz |
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AMD Phenom II X2 555
2C 2T @ 3.20 GHz |
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CPU-Z Benchmark 17 (Multi-Core)
The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
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AMD EPYC 7451
24C 48T @ 2.30 GHz |
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AMD Phenom II X2 555
2C 2T @ 3.20 GHz |
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Devices using this processor |
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| AMD EPYC 7451 | AMD Phenom II X2 555 |
| Unknown | Unknown |
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