AMD Athlon II X4 645 vs Intel Core i9-9820X
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CPU comparison with benchmarks
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| AMD Athlon II X4 645 | Intel Core i9-9820X | |
CPU comparisonAMD Athlon II X4 645 or Intel Core i9-9820X - 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 645 has 4 cores with 4 threads and clocks with a maximum frequency of 3.10 GHz. Up to 16 GB of memory is supported in 2 memory channels. The AMD Athlon II X4 645 was released in Q3/2010. The Intel Core i9-9820X has 10 cores with 20 threads and clocks with a maximum frequency of 4.20 GHz. The CPU supports up to 128 GB of memory in 4 memory channels. The Intel Core i9-9820X was released in Q4/2018. |
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| AMD Athlon II (52) | Family | Intel Core i9 (78) |
| AMD Athlon II X4 (Propus) (10) | CPU group | Intel Core i 9000X (8) |
| 1 | Generation | 9 |
| Propus | Architecture | Skylake X Refresh |
| Desktop / Server | Segment | Desktop / Server |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe AMD Athlon II X4 645 is a 4 core processor with a clock frequency of 3.10 GHz. The Intel Core i9-9820X has 10 CPU cores with a clock frequency of 3.30 GHz (4.20 GHz). |
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| AMD Athlon II X4 645 | Characteristic | Intel Core i9-9820X |
| 4 | Cores | 10 |
| 4 | Threads | 20 |
| normal | Core architecture | normal |
| No | Hyperthreading | Yes |
| No | Overclocking ? | Yes |
| 3.10 GHz | Frequency | 3.30 GHz |
| -- | Turbo Frequency (1 Core) | 4.20 GHz |
| -- | Turbo Frequency (All Cores) | 4.00 GHz |
Memory & PCIeThe AMD Athlon II X4 645 supports a maximum of 16 GB of memory in 2 memory channels. The Intel Core i9-9820X can connect up to 128 GB of memory in 4 memory channels. |
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| AMD Athlon II X4 645 | Characteristic | Intel Core i9-9820X |
| DDR3-1333 | Memory | DDR4-2666 |
| 16 GB | Max. Memory | 128 GB |
| 2 (Dual Channel) | Memory channels | 4 (Quad Channel) |
| 21.3 GB/s | Max. Bandwidth | 85.4 GB/s |
| No | ECC | No |
| 2.00 MB | L2 Cache | -- |
| -- | L3 Cache | 17.00 MB |
| 2.0 | PCIe version | 3.0 |
| -- | PCIe lanes | 44 |
| -- | PCIe Bandwidth | 43.3 GB/s |
Thermal ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The AMD Athlon II X4 645 has a TDP of 95 W, that of the Intel Core i9-9820X is 165 W. |
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| AMD Athlon II X4 645 | Characteristic | Intel Core i9-9820X |
| 95 W | TDP (PL1 / PBP) | 165 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | -- |
| -- | Tjunction max. | 95 °C |
Technical detailsThe AMD Athlon II X4 645 has a 2.00 MB cache, while the Intel Core i9-9820X cache has a total of 17.00 MB. |
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| AMD Athlon II X4 645 | Characteristic | Intel Core i9-9820X |
| 45 nm | Technology | 14 nm |
| Unknown | Chip design | Monolithic |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| MMX, 3DNow!, SSE3, SSE4a | ISA extensions | SSE4.1, SSE4.2, AVX2, AVX-512 |
| AM3 | Socket | LGA 2066 |
| AMD-V | Virtualization | VT-x, VT-x EPT, VT-d |
| No | AES-NI | Yes |
| Windows 10, Linux | Operating systems | Windows 10, Windows 11, Linux |
| Q3/2010 | Release date | Q4/2018 |
| -- | Release price | 889 $ |
| show more data | show more data | |
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10C 20T @ 3.30 GHz (4.20 GHz) buy now on Amazon and save!
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Rate these processors
Average performance in benchmarks
⌀ Single core performance in 2 CPU benchmarks
⌀ Multi core performance in 4 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 645
4C 4T @ 3.10 GHz |
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Intel Core i9-9820X
10C 20T @ 4.20 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 Athlon II X4 645
4C 4T @ 3.10 GHz |
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Intel Core i9-9820X
10C 20T @ 4.00 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 Athlon II X4 645
4C 4T @ 3.10 GHz |
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Intel Core i9-9820X
10C 20T @ 4.20 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 Athlon II X4 645
4C 4T @ 3.10 GHz |
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Intel Core i9-9820X
10C 20T @ 4.00 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 645
4C 4T @ 3.10 GHz |
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Intel Core i9-9820X
10C 20T @ 4.00 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 Athlon II X4 645
4C 4T @ 3.10 GHz |
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Intel Core i9-9820X
10C 20T @ 3.30 GHz |
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Cinebench R23 (Single-Core)
Cinebench R23 is the successor of Cinebench R20 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 Athlon II X4 645
4C 4T @ 3.10 GHz |
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Intel Core i9-9820X
10C 20T @ 4.20 GHz |
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Cinebench R23 (Multi-Core)
Cinebench R23 is the successor of Cinebench R20 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 Athlon II X4 645
4C 4T @ 3.10 GHz |
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Intel Core i9-9820X
10C 20T @ 4.00 GHz |
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Geekbench 6 (Single-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
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AMD Athlon II X4 645
4C 4T @ 3.10 GHz |
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Intel Core i9-9820X
10C 20T @ 4.20 GHz |
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Geekbench 6 (Multi-Core)
Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
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AMD Athlon II X4 645
4C 4T @ 3.10 GHz |
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Intel Core i9-9820X
10C 20T @ 4.00 GHz |
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Blender 2.81 (bmw27)
Blender is a free 3D graphics software for rendering (creating) 3D bodies, which can also be textured and animated in the software. The Blender benchmark creates predefined scenes and measures the time (s) required for the entire scene. The shorter the time required, the better. We selected bmw27 as the benchmark scene.
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AMD Athlon II X4 645
4C 4T @ 3.10 GHz |
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Intel Core i9-9820X
10C 20T @ 4.00 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 Athlon II X4 645
4C 4T @ 3.10 GHz |
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Intel Core i9-9820X
10C 20T @ 4.20 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 Athlon II X4 645
4C 4T @ 3.10 GHz |
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Intel Core i9-9820X
10C 20T @ 4.00 GHz |
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Devices using this processor |
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| AMD Athlon II X4 645 | Intel Core i9-9820X |
| Unknown | Unknown |
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