Intel® Core™ i7-6800K

The Intel Core i7-6800K is a desktop processor with 6 cores and 12 threads, built on the Broadwell architecture (14 nm process). It launched in Apr 2016. Clocks run from 3.4 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 128 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 i7-6800K scores 2,246 in single-core performance and 10,689 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 4,900 for overall performance, 10,092 for productivity performance, 9,922 for creator performance, 10,622 for engineering performance and 9,410 for gaming performance. Its multi-core throughput works out to 1,782 per core, 891 per thread and 76 per watt. Its computed efficiency index is 414. Its performance index is 61, so its overall performance is 39% 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 i7-6800K scores 37,110 in integer math, 24,241 in floating-point math, 161,287 in compression, 2,944 in cryptography, 797 in physics simulation, 10,325 in vector SIMD, 47 in the prime sieve and 20,387 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 37% below in integer math, 47% below in floating-point math, 29% below in compression, 74% below in cryptography, 27% below in physics simulation, 33% below in vector SIMD, 30% 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 i7-6800K has 6 physical cores and runs 12 logical threads. It runs 2 threads per core. It runs at a base clock of 3.40 GHz and boosts up to 3.60 GHz.

The Intel Core i7-6800K is a desktop processor, belongs to the Intel Core i7 family, uses the Broadwell architecture, carries the codename Broadwell E and is manufactured on a 14 nm process. It launched in Apr 2016.

The Intel Core i7-6800K 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 i7-6800K 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 i7-6800K supports DDR4 memory, addresses up to 128 GB of memory, uses 4 memory channels, runs memory at up to 2,400 MT/s and delivers up to 76.8 GB/s of memory bandwidth. It does not support DDR5 and LPDDR memory.

The Intel Core i7-6800K does not include integrated graphics, so a discrete graphics card is required for display output.

The Intel Core i7-6800K uses the FCLGA2011 socket, supports PCI Express 3.0 and provides up to 28 PCIe lanes.

The Intel Core i7-6800K 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 i7-6800K is manufactured by Intel. It launched at a price of $434.

The Intel Core i7-6800K is also identified by the model number i7-6800K.

After an audit, 1 value was corrected on the Intel Core i7-6800K record. Each change is listed with its old value, new value, rule and sources.

• Integrated graphics: Yes → No. Rule: Cleanup hedt no igpu. LGA2011/LGA2011-3/LGA2066 Core desktop part: Intel ARK lists no Processor Graphics; value came from architecture inference.

The audit log is public: all changes for this CPU, the corrections overview and the method.

Feex has recorded 60% of the specifications it tracks for the Intel Core i7-6800K. 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 i7-6800K and have the closest multi-core scores in the Feex database include Intel Xeon E5-4650 v3, Intel Xeon E5-4620 v3, Intel Xeon E5-4655 v4, Intel Xeon E5-4650 v2 and Intel Xeon E5-2658 v2.