Core i7-5820K: specs and benchmarks
Aggregate performance score
Core i7-5820K provides acceptable benchmark performance at 6.20% of a leader's which is a 96-core EPYC 9655P.
Summary
Intel started Core i7-5820K sales 1 September 2014 at a recommended price of $410. This is a Haswell-E architecture desktop processor primarily aimed at office systems. It has 6 cores and 12 threads, and is based on 22 nm manufacturing technology, with a max turbo frequency of 3600 MHz and an unlocked multiplier.
Compatibility-wise, this is FCLGA2011 processor with a TDP of 140 Watt. It supports DDR4 memory.
Primary details
Core i7-5820K processor market type (desktop or notebook), architecture, sales start time and pricing.
| Place in the ranking | 1076 | |
| Place by popularity | not in top-100 | |
| Cost-effectiveness evaluation | 1.13 | |
| Market segment | Desktop processor | |
| Power efficiency | 4.19 | of 100.00 (Core Ultra 7 164U) |
| Architecture codename | Haswell-E (2014) | |
| Release date | 1 September 2014 (10 years ago) | |
| Launch price (MSRP) | $410 | of 17,906 (Xeon Platinum 8280L) |
Cost-effectiveness evaluation
Performance per price, higher is better.
Detailed specifications
Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.
| Physical cores | 6 (Hexa-Core) | |
| Threads | 12 | |
| Base clock speed | 3.3 GHz | of 4.7 GHz (FX-9590) |
| Boost clock speed | 3.6 GHz | of 6.2 GHz (Core i9-14900KS) |
| Bus rate | 0 GT/s | |
| L1 cache | 64 KB (per core) | of 80 KB (EPYC 9965) |
| L2 cache | 256 KB (per core) | |
| L3 cache | 15 MB (shared) | of 1152 MB (EPYC 9684X) |
| Chip lithography | 22 nm | of 3 nm (Apple M3 Max 16-Core) |
| Die size | 356 mm2 | |
| Maximum core temperature | 67 °C | of 110 °C (Atom x7-E3950) |
| Number of transistors | 2,600 million | of 135,240 million (EPYC 9684X) |
| 64 bit support | + | |
| Windows 11 compatibility | - | |
| Unlocked multiplier | + |
Compatibility
Information on Core i7-5820K compatibility with other computer components and devices: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.
| Number of CPUs in a configuration | 1 | of 8 (Opteron 842) |
| Socket | FCLGA2011 | |
| Power consumption (TDP) | 140 Watt | of 3100 ‑ 4500 (Ryzen 7 7435H) |
Technologies and extensions
Technological capabilities and additional instructions supported by Core i7-5820K. You'll probably need this information if you require some particular technology.
| Instruction set extensions | Intel® SSE4.2, Intel® AVX2 | |
| AES-NI | + | |
| AVX | + | |
| Enhanced SpeedStep (EIST) | + | |
| Turbo Boost Technology | 2.0 | |
| Hyper-Threading Technology | + | |
| TSX | + | |
| Idle States | + | |
| Thermal Monitoring | + | |
| Smart Response | + | |
| Demand Based Switching | - |
Security technologies
Processor technologies aimed at improving security, for example, by protecting against hacks.
| TXT | + | |
| EDB | + | |
| Identity Protection | + |
Virtualization technologies
Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.
| VT-d | + | |
| VT-x | + | |
| EPT | + |
Memory specs
Types, maximum amount and channel number of RAM supported by Core i7-5820K's memory controller. Depending on the motherboard, higher memory frequency may be supported.
| Supported memory types | DDR4 | |
| Maximum memory size | 64 GB | of 6 TiB (EPYC 9124) |
| Max memory channels | 4 | of 12 (Xeon Platinum 9221) |
| Maximum memory bandwidth | 68 GB/s | of 460.8 GB/s (EPYC 9124) |
Peripherals
Specifications and connection types of supported peripherals.
| PCIe version | 3.0 | of 5.0 (Core i9-12900K) |
| PCI Express lanes | 28 | of 128 (EPYC 7551P) |
Benchmark performance
Single-core and multi-core benchmark results of Core i7-5820K. Overall benchmark performance is measured in points in 0-100 range, higher is better.
Combined synthetic benchmark score
This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.
Passmark
Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.
GeekBench 5 Single-Core
GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.
GeekBench 5 Multi-Core
GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.
3DMark Fire Strike Physics
Send your test results of Core i7-5820K.
AMD equivalent
According to our data, the closest AMD alternative to Core i7-5820K is FX-9590, which is faster by 4% and higher by 24 positions in our ranking.
Here are some closest AMD rivals to Core i7-5820K:
Similar processors
Here is our recommendation of several processors that are more or less close in performance to the one reviewed.
Recommended GPUs
People consider these graphics cards to be good for Core i7-5820K, according to our PC configuration statistics.
These are the fastest graphics cards for Core i7-5820K in our user configuration statistics. There is a total of 1574 configurations using Core i7-5820K in our database.
