Intel® Core™ i7-6900K

The Intel Core i7-6900K is a desktop processor with 8 cores and 16 threads, built on the Broadwell architecture (14 nm process). It launched in Apr 2016. Clocks run from 3.2 GHz base to 3.7 GHz boost. A 20-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 (40 lanes). Rated TDP is 140 W. Notable platform capabilities: Extended Page Tables (EPT).

The Intel Core i7-6900K scores 2,343 in single-core performance and 14,636 in multi-core performance (PassMark CPU Mark ratings). From those two ratings Feex computes 5,856 for overall performance, 12,794 for productivity performance, 12,267 for creator performance, 15,002 for engineering performance and 10,688 for gaming performance. Its multi-core throughput works out to 1,830 per core, 915 per thread and 105 per watt. Its computed efficiency index is 495. Its performance index is 73, so its overall performance is 27% 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 i7-6900K scores 51,580 in integer math, 33,734 in floating-point math, 225,644 in compression, 4,164 in cryptography, 1,088 in physics simulation, 14,532 in vector SIMD, 65 in the prime sieve and 28,379 in sorting. Higher is better. Compared with the Intel Core i5-12400, it is 12% below in integer math, 27% below in floating-point math, 1% below in compression, 64% below in cryptography, equal in physics simulation, 6% below in vector SIMD, 3% below in the prime sieve and 25% above 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 i7-6900K has 8 physical cores and runs 16 logical threads. It runs 2 threads per core. It runs at a base clock of 3.20 GHz and boosts up to 3.70 GHz.

The Intel Core i7-6900K 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 i7-6900K has 512 KB of L1 cache, 2 MB of L2 cache and 20 MB of L3 cache. That adds up to about 22.5 MB of cache, or 2.81 MB per core. Each core has 256 KB of private L2 cache.

The Intel Core i7-6900K has a 3-level cache hierarchy: L1 at 512 KB, L2 at 2 MB and L3 at 20 MB. L3 is the largest level and makes up about 89% of the cache listed here.

The Intel Core i7-6900K 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 i7-6900K does not include integrated graphics, so a discrete graphics card is required for display output.

The Intel Core i7-6900K uses the FCLGA2011 socket, supports PCI Express 3.0 and provides up to 40 PCIe lanes.

The Intel Core i7-6900K 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 i7-6900K is manufactured by Intel. It launched at a price of $1,089.

The Intel Core i7-6900K is also identified by the model number i7-6900K.

After an audit, 1 value was corrected on the Intel Core i7-6900K 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 i7-6900K. 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 i7-6900K and have the closest multi-core scores in the Feex database include Intel Xeon E5-2683 v3, Intel Xeon E5-2680 v3, Intel Xeon E5-2658 v4, Intel Xeon E5-2658A v3 and Intel Xeon E5-2687W v3.