Intel® Core™ i7-5820K

The Intel Core i7-5820K is a desktop processor with 6 cores and 12 threads, built on the Haswell architecture (22 nm process). It launched in Jul 2014. Clocks run from 3.3 GHz base to 3.6 GHz boost. A 15-MB L3 cache backs the cores (2.8 MB per core). It addresses DDR4 memory up to 64 GB across 4 channels. The chip drops into the FCLGA2011 socket and exposes PCIe 3.0 (28 lanes). Rated TDP is 140 W. Notable platform capabilities: Extended Page Tables (EPT).

The Intel Core i7-5820K scores 1,992 in single-core performance and 9,831 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 4,425 for overall performance, 9,179 for productivity performance, 8,993 for creator performance, 9,770 for engineering performance and 8,434 for gaming performance. Its multi-core throughput works out to 1,639 per core, 819 per thread and 70 per watt. Its computed efficiency index is 374. Its performance index is 55, so its overall performance is 45% below the Intel Core i5-12400 (index 100). Each bar shows the score as a share of a reference ceiling, which is the larger of the 99th-percentile score across the Feex CPU database and a fixed baseline.

Scores for individual PassMark CPU Mark test categories. Higher is better. These are measured test scores, not computed from the single-core and multi-core ratings.

In the individual workload tests the Intel Core i7-5820K scores 35,850 in integer math, 17,967 in floating-point math, 148,741 in compression, 2,789 in cryptography, 766 in physics simulation, 9,630 in vector SIMD, 46 in the prime sieve and 20,389 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 39% below in integer math, 61% below in floating-point math, 35% below in compression, 76% below in cryptography, 30% below in physics simulation, 38% below in vector SIMD, 31% below in the prime sieve and 10% below in sorting. Each bar shows the score as a share of that workload's reference ceiling, the larger of the 99th-percentile score across CPUs with a recorded value and a fixed baseline.

The Intel Core i7-5820K has 6 physical cores and runs 12 logical threads. It runs 2 threads per core. It runs at a base clock of 3.30 GHz and boosts up to 3.60 GHz.

The Intel Core i7-5820K is a desktop processor, belongs to the Intel Core i7 family, uses the Haswell architecture, carries the codename Haswell E and is manufactured on a 22 nm process. It launched in Jul 2014.

The Intel Core i7-5820K has 384 KB of L1 cache, 1.50 MB of L2 cache and 15 MB of L3 cache. That adds up to about 16.9 MB of cache, or 2.81 MB per core. Each core has 256 KB of private L2 cache.

The Intel Core i7-5820K has a 3-level cache hierarchy: L1 at 384 KB, L2 at 1.5 MB and L3 at 15 MB. L3 is the largest level and makes up about 89% of the cache listed here.

The Intel Core i7-5820K supports DDR4 memory, addresses up to 64 GB of memory, uses 4 memory channels, runs memory at up to 2,133 MT/s and delivers up to 68.3 GB/s of memory bandwidth. It does not support DDR5 and LPDDR memory.

The Intel Core i7-5820K does not include integrated graphics, so a discrete graphics card is required for display output.

The Intel Core i7-5820K uses the FCLGA2011 socket, supports PCI Express 3.0 and provides up to 28 PCIe lanes.

The Intel Core i7-5820K has a rated TDP of 140 W.

Instruction sets, security, virtualization, AI acceleration and OS readiness. Features are listed as supported, explicitly not supported, or not recorded; a feature that is not recorded is not the same as unsupported.

The Intel Core i7-5820K is manufactured by Intel. It launched at a price of $389.

The Intel Core i7-5820K is also identified by the model number i7-5820K.

Feex has recorded 60% of the specifications it tracks for the Intel Core i7-5820K. Values Feex does not hold are shown as "Not recorded" rather than estimated.

Not recorded: Core Configuration: Performance Cores, Efficiency Cores, Hybrid Architecture, All-Core Boost and Unlocked Multiplier. Architecture & Generation: ISA Family and Market Status. Cache: L4 Cache. Memory Support: ECC Memory. Platform & Compatibility: Package and Package Size. Power & Thermals: Base Power, Maximum Turbo Power, Configurable TDP (Min), Configurable TDP (Max), Max Junction Temperature and Tcase. Physical & Manufacturing: Transistor Count, Die Size, Die Count and Foundry. Naming & Aliases: Normalized Name, SKU, Processor Number and Part Number.

Processors that use the same FCLGA2011 socket as the Intel Core i7-5820K and have the closest multi-core scores in the Feex database include Intel Xeon E5-2648L v3, Intel Xeon E5-2630L v4, Intel Xeon E5-2650 v2, Intel Core i7-4960X Extreme Edition and Intel Xeon E5-2690.