Intel Core i7-3820 vs AMD FX-8100
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CPU comparison with benchmarks
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| Intel Core i7-3820 | AMD FX-8100 | |
CPU comparisonIntel Core i7-3820 or AMD FX-8100 - 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 Intel Core i7-3820 has 4 cores with 8 threads and clocks with a maximum frequency of 3.80 GHz. Up to 64 GB of memory is supported in 4 memory channels. The Intel Core i7-3820 was released in Q1/2012. The AMD FX-8100 has 8 cores with 8 threads and clocks with a maximum frequency of 3.70 GHz. The CPU supports up to GB of memory in 2 memory channels. The AMD FX-8100 was released in Q4/2011. |
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| Intel Core i7 Extreme Edition (24) | Family | AMD FX (30) |
| Intel Core i 3000X (4) | CPU group | AMD FX-8000 (11) |
| 3 | Generation | 2 |
| Sandy Bridge E | Architecture | Vishera (Bulldozer) |
| Desktop / Server | Segment | Desktop / Server |
| -- | Predecessor | -- |
| -- | Successor | -- |
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CPU Cores and Base FrequencyThe Intel Core i7-3820 is a 4 core processor with a clock frequency of 3.60 GHz (3.80 GHz). The AMD FX-8100 has 8 CPU cores with a clock frequency of 2.80 GHz (3.70 GHz). |
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| Intel Core i7-3820 | Characteristic | AMD FX-8100 |
| 4 | Cores | 8 |
| 8 | Threads | 8 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | No |
| Yes | Overclocking ? | Yes |
| 3.60 GHz | Frequency | 2.80 GHz |
| 3.80 GHz | Turbo Frequency (1 Core) | 3.70 GHz |
| -- | Turbo Frequency (All Cores) | 3.70 GHz |
Memory & PCIeThe Intel Core i7-3820 supports a maximum of 64 GB of memory in 4 memory channels. The AMD FX-8100 can connect up to GB of memory in 2 memory channels. |
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| Intel Core i7-3820 | Characteristic | AMD FX-8100 |
| DDR3-1066, DDR3-1333, DDR3-1600 | Memory | DDR3-1866 |
| 64 GB | Max. Memory | |
| 4 (Quad Channel) | Memory channels | 2 (Dual Channel) |
| 51.2 GB/s | Max. Bandwidth | 29.9 GB/s |
| No | ECC | Yes |
| -- | L2 Cache | -- |
| 10.00 MB | L3 Cache | 8.00 MB |
| 2.0 | PCIe version | -- |
| 40 | PCIe lanes | -- |
| 20.0 GB/s | PCIe Bandwidth | -- |
Thermal ManagementThe TDP (Thermal Design Power) of a processor specifies the required cooling solution. The Intel Core i7-3820 has a TDP of 130 W, that of the AMD FX-8100 is 95 W. |
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| Intel Core i7-3820 | Characteristic | AMD FX-8100 |
| 130 W | TDP (PL1 / PBP) | 95 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | -- |
| 105 °C | Tjunction max. | -- |
Technical detailsThe Intel Core i7-3820 has a 10.00 MB cache, while the AMD FX-8100 cache has a total of 8.00 MB. |
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| Intel Core i7-3820 | Characteristic | AMD FX-8100 |
| 32 nm | Technology | 32 nm |
| Monolithic | Chip design | Unknown |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE4.1, SSE4.2, AVX | ISA extensions | SSE4.1, SSE4.2, AVX, FMA3, FMA4 |
| LGA 2011 | Socket | AM3+ |
| VT-x, VT-x EPT, VT-d (C2 Stepping) | Virtualization | AMD-V |
| Yes | AES-NI | Yes |
| Windows 10, Linux | Operating systems | Windows 10, Linux |
| Q1/2012 | Release date | Q4/2011 |
| 305 $ | Release price | -- |
| show more data | show more data | |
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8C 8T @ 2.80 GHz (3.70 GHz) buy now on Amazon and save!
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Average performance in benchmarks
⌀ Single core performance in 0 CPU benchmarks
⌀ Multi core performance in 1 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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Intel Core i7-3820
4C 8T @ 3.60 GHz |
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AMD FX-8100
8C 8T @ 3.70 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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Intel Core i7-3820
4C 8T @ 3.80 GHz |
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AMD FX-8100
8C 8T @ 3.70 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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Intel Core i7-3820
4C 8T @ 3.60 GHz |
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AMD FX-8100
8C 8T @ 3.70 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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Intel Core i7-3820
4C 8T @ 3.80 GHz |
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AMD FX-8100
8C 8T @ 3.70 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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Intel Core i7-3820
4C 8T @ 3.60 GHz |
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AMD FX-8100
8C 8T @ 3.70 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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Intel Core i7-3820
4C 8T @ 3.80 GHz |
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AMD FX-8100
8C 8T @ 3.70 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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Intel Core i7-3820
4C 8T @ 3.60 GHz |
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AMD FX-8100
8C 8T @ 3.70 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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Intel Core i7-3820
4C 8T @ 3.60 GHz |
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AMD FX-8100
8C 8T @ 2.80 GHz |
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Devices using this processor |
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| Intel Core i7-3820 | AMD FX-8100 |
| Unknown | Unknown |
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