AMD Athlon II X4 651 vs Intel Core2 Duo E6420
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CPU comparison with benchmarks
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| AMD Athlon II X4 651 | Intel Core2 Duo E6420 | |
CPU comparisonAMD Athlon II X4 651 or Intel Core2 Duo E6420 - 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 Athlon II X4 651 has 4 cores with 4 threads and clocks with a maximum frequency of 3.00 GHz. Up to 16 GB of memory is supported in 2 memory channels. The AMD Athlon II X4 651 was released in Q4/2011. The Intel Core2 Duo E6420 has 2 cores with 2 threads and clocks with a maximum frequency of 2.13 GHz. The CPU supports up to 16 GB of memory in 2 memory channels. The Intel Core2 Duo E6420 was released in Q2/2007. |
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| AMD Athlon II (52) | Family | Intel Core2 Duo (29) |
| AMD Athlon II X4 (Llano) (5) | CPU group | Intel Core 2 Duo E4000/E6000 (15) |
| 2 | Generation | 1 |
| Llano | Architecture | Conroe (Core) |
| Desktop / Server | Segment | Desktop / Server |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Athlon II X4 651 has 4 CPU cores and can calculate 4 threads in parallel. The clock frequency of the AMD Athlon II X4 651 is 3.00 GHz while the Intel Core2 Duo E6420 has 2 CPU cores and 2 threads can calculate simultaneously. The clock frequency of the Intel Core2 Duo E6420 is at 2.13 GHz. |
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| AMD Athlon II X4 651 | Characteristic | Intel Core2 Duo E6420 |
| 4 | Cores | 2 |
| 4 | Threads | 2 |
| normal | Core architecture | normal |
| No | Hyperthreading | No |
| No | Overclocking ? | Yes |
| 3.00 GHz | Frequency | 2.13 GHz |
| -- | Turbo Frequency (1 Core) | -- |
| -- | Turbo Frequency (All Cores) | -- |
Memory & PCIeThe AMD Athlon II X4 651 can use up to 16 GB of memory in 2 memory channels. The maximum memory bandwidth is 21.3 GB/s. The Intel Core2 Duo E6420 supports up to 16 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 21.3 GB/s. |
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| AMD Athlon II X4 651 | Characteristic | Intel Core2 Duo E6420 |
| DDR3-1333 | Memory | DDR3-1333, DDR2-1066 |
| 16 GB | Max. Memory | 16 GB |
| 2 (Dual Channel) | Memory channels | 2 (Dual Channel) |
| 21.3 GB/s | Max. Bandwidth | 21.3 GB/s |
| No | ECC | No |
| 4.00 MB | L2 Cache | 4.00 MB |
| -- | L3 Cache | -- |
| 2.0 | PCIe version | -- |
| -- | PCIe lanes | -- |
| -- | PCIe Bandwidth | -- |
Thermal ManagementThe thermal design power (TDP for short) of the AMD Athlon II X4 651 is 100 W, while the Intel Core2 Duo E6420 has a TDP of 65 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently. |
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| AMD Athlon II X4 651 | Characteristic | Intel Core2 Duo E6420 |
| 100 W | TDP (PL1 / PBP) | 65 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | -- |
| -- | Tjunction max. | -- |
Technical detailsThe AMD Athlon II X4 651 is manufactured in 32 nm and has 4.00 MB cache. The Intel Core2 Duo E6420 is manufactured in 65 nm and has a 4.00 MB cache. |
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| AMD Athlon II X4 651 | Characteristic | Intel Core2 Duo E6420 |
| 32 nm | Technology | 65 nm |
| Unknown | Chip design | Monolithic |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| MMX, 3DNow!, SSE3, SSE4a | ISA extensions | MMX, SSE, SSE2, SSE3 |
| FM1 | Socket | LGA 775 |
| AMD-V | Virtualization | VT-x |
| No | AES-NI | No |
| Windows 10, Linux | Operating systems | Windows 10, Linux |
| Q4/2011 | Release date | Q2/2007 |
| -- | Release price | -- |
| show more data | show more data | |
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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
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 Athlon II X4 651
4C 4T @ 3.00 GHz |
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Intel Core2 Duo E6420
2C 2T @ 2.13 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 Athlon II X4 651
4C 4T @ 3.00 GHz |
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Intel Core2 Duo E6420
2C 2T @ 2.13 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 Athlon II X4 651
4C 4T @ 3.00 GHz |
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Intel Core2 Duo E6420
2C 2T @ 2.13 GHz |
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Devices using this processor |
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| AMD Athlon II X4 651 | Intel Core2 Duo E6420 |
| Unknown | Unknown |
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