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 | 5767 vs 5742 |
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 4% better performance in PassMark - Single thread mark: 1823 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 | 1823 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 |
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PassMark - Single thread mark | 1745 | 1823 |
PassMark - CPU mark | 5767 | 5742 |
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 | |
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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 |