AMD EPYC 7251 vs AMD Phenom II X6 1045T
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CPU comparison with benchmarks
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| AMD EPYC 7251 | AMD Phenom II X6 1045T | |
CPU comparisonAMD EPYC 7251 or AMD Phenom II X6 1045T - 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 7251 has 8 cores with 16 threads and clocks with a maximum frequency of 2.90 GHz. Up to GB of memory is supported in 8 memory channels. The AMD EPYC 7251 was released in Q3/2017. The AMD Phenom II X6 1045T has 6 cores with 6 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 X6 1045T was released in Q3/2010. |
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| AMD EPYC (129) | Family | AMD Phenom II (52) |
| AMD EPYC 7001 (12) | CPU group | AMD Phenom II - 1000 (7) |
| 1 | Generation | 6 |
| Naples (Zen) | Architecture | Thuban (K10) |
| Desktop / Server | Segment | Desktop / Server |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD EPYC 7251 has 8 CPU cores and can calculate 16 threads in parallel. The clock frequency of the AMD EPYC 7251 is 2.10 GHz (2.90 GHz) while the AMD Phenom II X6 1045T has 6 CPU cores and 6 threads can calculate simultaneously. The clock frequency of the AMD Phenom II X6 1045T is at 2.70 GHz (3.20 GHz). |
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| AMD EPYC 7251 | Characteristic | AMD Phenom II X6 1045T |
| 8 | Cores | 6 |
| 16 | Threads | 6 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | No |
| No | Overclocking ? | Yes |
| 2.10 GHz | Frequency | 2.70 GHz |
| 2.90 GHz | Turbo Frequency (1 Core) | 3.20 GHz |
| 2.90 GHz | Turbo Frequency (All Cores) | 3.20 GHz |
Memory & PCIeThe AMD EPYC 7251 can use up to GB of memory in 8 memory channels. The maximum memory bandwidth is 153.6 GB/s. The AMD Phenom II X6 1045T 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 7251 | Characteristic | AMD Phenom II X6 1045T |
| DDR4-2666 | Memory | DDR3-1333, DDR2-1066 |
| Max. Memory | ||
| 8 (Octa Channel) | Memory channels | 2 (Dual Channel) |
| 153.6 GB/s | Max. Bandwidth | 21.3 GB/s |
| Yes | ECC | No |
| -- | L2 Cache | -- |
| 32.00 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 7251 is 120 W, while the AMD Phenom II X6 1045T has a TDP of 95 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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| AMD EPYC 7251 | Characteristic | AMD Phenom II X6 1045T |
| 120 W | TDP (PL1 / PBP) | 95 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | -- |
| -- | Tjunction max. | -- |
Technical detailsThe AMD EPYC 7251 is manufactured in 14 nm and has 32.00 MB cache. The AMD Phenom II X6 1045T is manufactured in 45 nm and has a 6.00 MB cache. |
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| AMD EPYC 7251 | Characteristic | AMD Phenom II X6 1045T |
| 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 | Q3/2010 |
| 450 $ | Release price | -- |
| show more data | show more data | |
8C 16T @ 2.10 GHz (2.90 GHz) buy now on Amazon and save!
6C 6T @ 2.70 GHz (3.20 GHz) buy now on Amazon and save!
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Rate these processors
Average performance in benchmarks
⌀ Single core performance in 1 CPU benchmarks
⌀ Multi core performance in 2 CPU benchmarks
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 7251
8C 16T @ 2.90 GHz |
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AMD Phenom II X6 1045T
6C 6T @ 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 7251
8C 16T @ 2.90 GHz |
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AMD Phenom II X6 1045T
6C 6T @ 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 7251
8C 16T @ 2.90 GHz |
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AMD Phenom II X6 1045T
6C 6T @ 3.20 GHz |
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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 7251
8C 16T @ 2.90 GHz |
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AMD Phenom II X6 1045T
6C 6T @ 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 7251
8C 16T @ 2.90 GHz |
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AMD Phenom II X6 1045T
6C 6T @ 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 7251
8C 16T @ 2.10 GHz |
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AMD Phenom II X6 1045T
6C 6T @ 2.70 GHz |
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Devices using this processor |
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| AMD EPYC 7251 | AMD Phenom II X6 1045T |
| Unknown | Unknown |
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