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AMD Phenom II X2 521 vs AMD Phenom II X4 925
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CPU comparison with benchmarks
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| AMD Phenom II X2 521 | AMD Phenom II X4 925 | |
CPU comparisonIn this CPU comparison, we compare the AMD Phenom II X2 521 and the AMD Phenom II X4 925 and use benchmarks to check which processor is faster.
We compare the AMD Phenom II X2 521 2 core processor released in Q2/2011 with the AMD Phenom II X4 925 which has 4 CPU cores and was introduced in Q2/2009. |
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| AMD Phenom II (52) | Family | AMD Phenom II (52) |
| AMD Phenom II - 500 (2) | CPU group | AMD Phenom II - 800/900 (23) |
| 1 | Generation | 4 |
| Regor (K10) | Architecture | Deneb (K10) |
| Desktop | Segment | Desktop |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Phenom II X2 521 is a 2 core processor with a clock frequency of 3.50 GHz. The processor can compute 2 threads at the same time. The AMD Phenom II X4 925 clocks with 2.80 GHz, has 4 CPU cores and can calculate 4 threads in parallel. |
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| AMD Phenom II X2 521 | Characteristic | AMD Phenom II X4 925 |
| 2 | Cores | 4 |
| 2 | Threads | 4 |
| normal | Core architecture | normal |
| No | Hyperthreading | No |
| Yes | Overclocking ? | Yes |
| 3.50 GHz | Frequency | 2.80 GHz |
| -- | Turbo Frequency (1 Core) | -- |
| -- | Turbo Frequency (All Cores) | -- |
Memory & PCIeUp to GB of memory in a maximum of 2 memory channels is supported by the AMD Phenom II X2 521, while the AMD Phenom II X4 925 supports a maximum of GB of memory with a maximum memory bandwidth of 21.3 GB/s enabled. |
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| AMD Phenom II X2 521 | Characteristic | AMD Phenom II X4 925 |
| DDR3-1333, DDR2-1066 | Memory | DDR3-1333, DDR2-1066 |
| Max. Memory | ||
| 2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
| 21.3 GB/s | Max. Bandwidth | 21.3 GB/s |
| No | ECC | No |
| -- | L2 Cache | -- |
| 2.00 MB | L3 Cache | 6.00 MB |
| -- | PCIe version | -- |
| -- | PCIe lanes | -- |
| -- | PCIe Bandwidth | -- |
Thermal ManagementThe AMD Phenom II X2 521 has a TDP of 65 W. The TDP of the AMD Phenom II X4 925 is 95 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution. |
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| AMD Phenom II X2 521 | Characteristic | AMD Phenom II X4 925 |
| 65 W | TDP (PL1 / PBP) | 95 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | -- |
| -- | Tjunction max. | -- |
Technical detailsThe AMD Phenom II X2 521 has 2.00 MB cache and is manufactured in 45 nm. The cache of AMD Phenom II X4 925 is at 6.00 MB. The processor is manufactured in 45 nm. |
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| AMD Phenom II X2 521 | Characteristic | AMD Phenom II X4 925 |
| 45 nm | Technology | 45 nm |
| Unknown | Chip design | Unknown |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE3, SSE4a | ISA extensions | SSE3, SSE4a |
| AM3 | Socket | AM3 |
| AMD-V | Virtualization | AMD-V |
| No | AES-NI | No |
| Windows 10, Linux | Operating systems | Windows 10, Linux |
| Q2/2011 | Release date | Q2/2009 |
| 35 $ | Release price | -- |
| show more data | show more data | |
2C 2T @ 3.50 GHz buy now on Amazon and save!
4C 4T @ 2.80 GHz buy now on Amazon and save!
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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 Phenom II X2 521
2C 2T @ 3.50 GHz |
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AMD Phenom II X4 925
4C 4T @ 2.80 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 Phenom II X2 521
2C 2T @ 3.50 GHz |
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AMD Phenom II X4 925
4C 4T @ 2.80 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 Phenom II X2 521
2C 2T @ 3.50 GHz |
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AMD Phenom II X4 925
4C 4T @ 2.80 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 Phenom II X2 521
2C 2T @ 3.50 GHz |
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AMD Phenom II X4 925
4C 4T @ 2.80 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 Phenom II X2 521
2C 2T @ 3.50 GHz |
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AMD Phenom II X4 925
4C 4T @ 2.80 GHz |
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Devices using this processor |
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| AMD Phenom II X2 521 | AMD Phenom II X4 925 |
| Unknown | Unknown |
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