Intel Core i7-3820 vs Intel Celeron 3965U
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CPU comparison with benchmarks
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| Intel Core i7-3820 | Intel Celeron 3965U | |
CPU comparisonIntel Core i7-3820 or Intel Celeron 3965U - 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 Intel Celeron 3965U has 2 cores with 2 threads and clocks with a maximum frequency of 2.20 GHz. The CPU supports up to 32 GB of memory in 2 memory channels. The Intel Celeron 3965U was released in Q1/2017. |
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| Intel Core i7 Extreme Edition (24) | Family | Intel Celeron (165) |
| Intel Core i 3000X (4) | CPU group | Intel Celeron 3000 (10) |
| 3 | Generation | 7 |
| Sandy Bridge E | Architecture | Kaby Lake U |
| Desktop / Server | Segment | Mobile |
| -- | 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 Intel Celeron 3965U has 2 CPU cores with a clock frequency of 2.20 GHz. |
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| Intel Core i7-3820 | Characteristic | Intel Celeron 3965U |
| 4 | Cores | 2 |
| 8 | Threads | 2 |
| normal | Core architecture | normal |
| Yes | Hyperthreading | No |
| Yes | Overclocking ? | No |
| 3.60 GHz | Frequency | 2.20 GHz |
| 3.80 GHz | Turbo Frequency (1 Core) | -- |
| -- | Turbo Frequency (All Cores) | -- |
Internal GraphicsThe integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs. |
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| no iGPU | GPU | Intel HD Graphics 610 |
| GPU frequency | 0.30 GHz | |
| -- | GPU (Turbo) | 0.90 GHz |
| -- | GPU Generation | 9.5 |
| Technology | 14 nm | |
| Max. displays | 3 | |
| -- | Compute units | 12 |
| -- | Shader | 96 |
| No | Hardware Raytracing | No |
| No | Frame Generation | No |
| -- | Max. GPU Memory | 32 GB |
| -- | DirectX Version | 12 |
Hardware codec supportA photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos. |
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| no iGPU | GPU | Intel HD Graphics 610 |
| No | Codec h265 / HEVC (8 bit) | Decode / Encode |
| No | Codec h265 / HEVC (10 bit) | Decode / Encode |
| No | Codec h264 | Decode / Encode |
| No | Codec VP9 | Decode / Encode |
| No | Codec VP8 | Decode / Encode |
| No | Codec AV1 | No |
| No | Codec AVC | Decode / Encode |
| No | Codec VC-1 | Decode |
| No | Codec JPEG | Decode / Encode |
Memory & PCIeThe Intel Core i7-3820 supports a maximum of 64 GB of memory in 4 memory channels. The Intel Celeron 3965U can connect up to 32 GB of memory in 2 memory channels. |
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| Intel Core i7-3820 | Characteristic | Intel Celeron 3965U |
| DDR3-1066, DDR3-1333, DDR3-1600 | Memory | LPDDR3-1866, DDR4-2133, DDR3L-1600 |
| 64 GB | Max. Memory | 32 GB |
| 4 (Quad Channel) | Memory channels | 2 (Dual Channel) |
| 51.2 GB/s | Max. Bandwidth | 34.1 GB/s |
| No | ECC | No |
| -- | L2 Cache | -- |
| 10.00 MB | L3 Cache | 2.00 MB |
| 2.0 | PCIe version | 2.0 |
| 40 | PCIe lanes | 10 |
| 20.0 GB/s | PCIe Bandwidth | 5.0 GB/s |
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 Intel Celeron 3965U is 15 W. |
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| Intel Core i7-3820 | Characteristic | Intel Celeron 3965U |
| 130 W | TDP (PL1 / PBP) | 15 W |
| -- | TDP (PL2) | -- |
| -- | TDP up | -- |
| -- | TDP down | 10 W |
| 105 °C | Tjunction max. | 100 °C |
Technical detailsThe Intel Core i7-3820 has a 10.00 MB cache, while the Intel Celeron 3965U cache has a total of 2.00 MB. |
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| Intel Core i7-3820 | Characteristic | Intel Celeron 3965U |
| 32 nm | Technology | 14 nm |
| Monolithic | Chip design | Monolithic |
| x86-64 (64 bit) | Instruction set (ISA) | x86-64 (64 bit) |
| SSE4.1, SSE4.2, AVX | ISA extensions | SSE4.1, SSE4.2 |
| LGA 2011 | Socket | BGA 1356 |
| VT-x, VT-x EPT, VT-d (C2 Stepping) | Virtualization | VT-x, VT-x EPT, VT-d |
| Yes | AES-NI | Yes |
| Windows 10, Linux | Operating systems | Windows 10, Linux |
| Q1/2012 | Release date | Q1/2017 |
| 305 $ | Release price | 107 $ |
| show more data | show more data | |
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Rate these processors
Average performance in benchmarks
⌀ Single core performance in 2 CPU benchmarks
⌀ Multi core performance in 3 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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Intel Core i7-3820
4C 8T @ 3.80 GHz |
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Intel Celeron 3965U
2C 2T @ 2.20 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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Intel Core i7-3820
4C 8T @ 3.60 GHz |
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Intel Celeron 3965U
2C 2T @ 2.20 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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Intel Celeron 3965U
2C 2T @ 2.20 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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Intel Core i7-3820
4C 8T @ 3.60 GHz |
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Intel Celeron 3965U
2C 2T @ 2.20 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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Intel Core i7-3820
4C 8T @ 3.60 GHz |
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Intel Celeron 3965U
2C 2T @ 2.20 GHz |
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iGPU - FP32 Performance (Single-precision GFLOPS)
The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
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Intel Core i7-3820
@ 0.00 GHz |
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Intel Celeron 3965U
Intel HD Graphics 610 @ 0.90 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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Intel Celeron 3965U
2C 2T @ 2.20 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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Intel Core i7-3820
4C 8T @ 3.80 GHz |
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Intel Celeron 3965U
2C 2T @ 2.20 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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Intel Core i7-3820
4C 8T @ 3.60 GHz |
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Intel Celeron 3965U
2C 2T @ 2.20 GHz |
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Devices using this processor |
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| Intel Core i7-3820 | Intel Celeron 3965U |
| Unknown | Unknown |
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