Intel Core i7-3820 vs Intel Core i7-2700K
Comparative analysis of Intel Core i7-3820 and Intel Core i7-2700K processors for all known characteristics in the following categories: Essentials, Performance, Memory, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization, Graphics, Graphics interfaces. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, 3DMark Fire Strike - Physics Score, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s).
Differences
Reasons to consider the Intel Core i7-3820
- CPU is newer: launch date 4 month(s) later
- Around 25% more L3 cache; more data can be stored in the L3 cache for quick access later
- 2x more maximum memory size: 64.23 GB vs 32 GB
- Around 4% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 4.665 vs 4.472
- Around 27% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 84.218 vs 66.305
- Around 9% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.606 vs 0.557
- Around 39% better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 2.267 vs 1.632
- Around 17% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 5.758 vs 4.935
| Specifications (specs) | |
| Launch date | February 2012 vs October 2011 |
| L3 cache | 10240 KB (shared) vs 8192 KB (shared) |
| Maximum memory size | 64.23 GB vs 32 GB |
| Benchmarks | |
| PassMark - CPU mark | 5769 vs 5748 |
| CompuBench 1.5 Desktop - Face Detection (mPixels/s) | 4.665 vs 4.472 |
| CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) | 84.218 vs 66.305 |
| CompuBench 1.5 Desktop - T-Rex (Frames/s) | 0.606 vs 0.557 |
| CompuBench 1.5 Desktop - Video Composition (Frames/s) | 2.267 vs 1.632 |
| CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) | 5.758 vs 4.935 |
Reasons to consider the Intel Core i7-2700K
- Processor is unlocked, an unlocked multiplier allows for easier overclocking
- Around 3% higher clock speed: 3.90 GHz vs 3.80 GHz
- Around 9% higher maximum core temperature: 72.6°C vs 66.8°C
- Around 37% lower typical power consumption: 95 Watt vs 130 Watt
- Around 5% better performance in PassMark - Single thread mark: 1825 vs 1745
- Around 12% better performance in Geekbench 4 - Single Core: 846 vs 756
- Around 4% better performance in Geekbench 4 - Multi-Core: 3277 vs 3163
- Around 4% better performance in 3DMark Fire Strike - Physics Score: 3461 vs 3318
| Specifications (specs) | |
| Unlocked | Unlocked vs Locked |
| Maximum frequency | 3.90 GHz vs 3.80 GHz |
| Maximum core temperature | 72.6°C vs 66.8°C |
| Thermal Design Power (TDP) | 95 Watt vs 130 Watt |
| Benchmarks | |
| PassMark - Single thread mark | 1825 vs 1745 |
| Geekbench 4 - Single Core | 846 vs 756 |
| Geekbench 4 - Multi-Core | 3277 vs 3163 |
| 3DMark Fire Strike - Physics Score | 3461 vs 3318 |
Compare benchmarks
CPU 1: Intel Core i7-3820
CPU 2: Intel Core i7-2700K
| PassMark - Single thread mark |
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| PassMark - CPU mark |
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| Geekbench 4 - Single Core |
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| Geekbench 4 - Multi-Core |
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| 3DMark Fire Strike - Physics Score |
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| CompuBench 1.5 Desktop - Face Detection (mPixels/s) |
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| CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) |
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| CompuBench 1.5 Desktop - T-Rex (Frames/s) |
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| CompuBench 1.5 Desktop - Video Composition (Frames/s) |
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| CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) |
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| Name | Intel Core i7-3820 | Intel Core i7-2700K |
|---|---|---|
| PassMark - Single thread mark | 1745 | 1825 |
| PassMark - CPU mark | 5769 | 5748 |
| Geekbench 4 - Single Core | 756 | 846 |
| Geekbench 4 - Multi-Core | 3163 | 3277 |
| 3DMark Fire Strike - Physics Score | 3318 | 3461 |
| CompuBench 1.5 Desktop - Face Detection (mPixels/s) | 4.665 | 4.472 |
| CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s) | 84.218 | 66.305 |
| CompuBench 1.5 Desktop - T-Rex (Frames/s) | 0.606 | 0.557 |
| CompuBench 1.5 Desktop - Video Composition (Frames/s) | 2.267 | 1.632 |
| CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s) | 5.758 | 4.935 |
Compare specifications (specs)
| Intel Core i7-3820 | Intel Core i7-2700K | |
|---|---|---|
Essentials |
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| Architecture codename | Sandy Bridge E | Sandy Bridge |
| Launch date | February 2012 | October 2011 |
| Launch price (MSRP) | $400 | $514 |
| Place in performance rating | 2232 | 2242 |
| Price now | $199.99 | $288.99 |
| Processor Number | i7-3820 | i7-2700K |
| Series | Intel® Core™ X-series Processors | Legacy Intel® Core™ Processors |
| Status | Discontinued | Discontinued |
| Value for money (0-100) | 13.26 | 8.88 |
| Vertical segment | Desktop | Desktop |
Performance |
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| 64 bit support | ||
| Base frequency | 3.60 GHz | 3.50 GHz |
| Bus Speed | 5 GT/s DMI2 | 5 GT/s DMI |
| Die size | 294 mm | 216 mm |
| L1 cache | 64 KB (per core) | 64 KB (per core) |
| L2 cache | 256 KB (per core) | 256 KB (per core) |
| L3 cache | 10240 KB (shared) | 8192 KB (shared) |
| Manufacturing process technology | 32 nm | 32 nm |
| Maximum case temperature (TCase) | 67 °C | |
| Maximum core temperature | 66.8°C | 72.6°C |
| Maximum frequency | 3.80 GHz | 3.90 GHz |
| Number of cores | 4 | 4 |
| Number of threads | 8 | 8 |
| Transistor count | 1270 million | 1160 million |
| VID voltage range | 0.600V – 1.350V | |
| Unlocked | ||
Memory |
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| Max memory channels | 4 | 2 |
| Maximum memory bandwidth | 51.2 GB/s | 21 GB/s |
| Maximum memory size | 64.23 GB | 32 GB |
| Supported memory types | DDR3 1066/1333/1600 | DDR3 1066/1333 |
Compatibility |
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| Low Halogen Options Available | ||
| Max number of CPUs in a configuration | 1 | 1 |
| Package Size | 52.5mm x 45.0mm | 37.5mm x 37.5mm |
| Sockets supported | FCLGA2011 | LGA1155 |
| Thermal Design Power (TDP) | 130 Watt | 95 Watt |
Peripherals |
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| Max number of PCIe lanes | 40 | 16 |
| PCI Express revision | 2.0 | 2.0 |
Security & Reliability |
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| Execute Disable Bit (EDB) | ||
| Intel® Identity Protection technology | ||
| Intel® Trusted Execution technology (TXT) | ||
Advanced Technologies |
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| Enhanced Intel SpeedStep® technology | ||
| Idle States | ||
| Instruction set extensions | Intel® SSE4.2, Intel® AVX | Intel® SSE4.1, Intel® SSE4.2, Intel® AVX |
| Intel 64 | ||
| Intel® Advanced Vector Extensions (AVX) | ||
| Intel® AES New Instructions | ||
| Intel® Demand Based Switching | ||
| Intel® Hyper-Threading technology | ||
| Intel® Smart Response technology | ||
| Intel® Turbo Boost technology | ||
| Intel® vPro™ Platform Eligibility | ||
| Thermal Monitoring | ||
| Flexible Display interface (FDI) | ||
| Intel® Fast Memory Access | ||
| Intel® Flex Memory Access | ||
Virtualization |
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| Intel® Virtualization Technology (VT-x) | ||
| Intel® Virtualization Technology for Directed I/O (VT-d) | ||
| Intel® VT-x with Extended Page Tables (EPT) | ||
Graphics |
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| Device ID | 0x112 | |
| Graphics base frequency | 850 MHz | |
| Graphics max dynamic frequency | 1.35 GHz | |
| Graphics max frequency | 1.35 GHz | |
| Intel® Clear Video HD technology | ||
| Intel® Flexible Display Interface (Intel® FDI) | ||
| Intel® InTru™ 3D technology | ||
| Intel® Quick Sync Video | ||
| Processor graphics | Intel® HD Graphics 3000 | |
Graphics interfaces |
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| Number of displays supported | 2 | |
| Wireless Display (WiDi) support | ||
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