INTEL

Intel Core i5-6600K

Intel processor specifications and benchmark scores

4
Cores
4
Threads
3.9
GHz Boost
91W
TDP
πŸ”“Unlocked πŸ–₯️Integrated GPU

Intel Core i5-6600K Specifications

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Core i5-6600K Core Configuration

Processing cores and threading

The Intel Core i5-6600K features 4 physical cores and 4 threads, which directly impacts multi-threaded performance in CPU benchmarks. More cores allow the processor to handle parallel workloads efficiently, improving performance in video editing, 3D rendering, and multitasking scenarios. Thread count determines how many simultaneous tasks the CPU can process, with higher thread counts benefiting productivity applications and content creation workflows.

Cores
4
Threads
4
SMP CPUs
1
⏱️

i5-6600K Clock Speeds

Base and boost frequencies

Clock speed is a critical factor in Core i5-6600K benchmark performance, measured in GHz. The base clock represents the guaranteed operating frequency, while the boost clock indicates maximum single-core performance under optimal conditions. Higher clock speeds translate to faster single-threaded performance, which is essential for gaming and applications that don't fully utilize multiple cores. The Core i5-6600K by Intel can dynamically adjust its frequency based on workload and thermal headroom.

Base Clock
3.5 GHz
Boost Clock
3.9 GHz
Multiplier
35x πŸ”“
πŸ’Ύ

Intel's Core i5-6600K Cache Hierarchy

L1, L2, L3 cache sizes

Cache memory is ultra-fast storage built directly into the i5-6600K processor die. L1 cache provides the fastest access for frequently used data, while L2 and L3 caches offer progressively larger storage with slightly higher latency. Larger cache sizes significantly improve CPU benchmark scores by reducing memory access times. The Core i5-6600K's cache configuration is optimized for both gaming performance and productivity workloads, minimizing data fetch delays during intensive computations.

L1 Cache
64 KB (per core)
L2 Cache
256 KB (per core)
L3 Cache
6 MB (shared)
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Skylake Architecture & Process

Manufacturing and design details

The Intel Core i5-6600K is built on Intel's 14 nm manufacturing process, which determines power efficiency and thermal characteristics. Smaller process nodes allow for more transistors in the same space, enabling higher performance per watt. The architecture defines how the processor handles instructions and manages data flow, directly impacting benchmark results across different workload types. Modern CPU architectures like the one in i5-6600K incorporate advanced branch prediction and out-of-order execution for optimal performance.

Architecture
Skylake
Codename
Skylake
Process Node
14 nm
Foundry
Intel
Generation
Core i5 (Skylake)
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Skylake Instruction Set Features

Supported CPU instructions and extensions

The Core i5-6600K by Intel supports various instruction set extensions that enable optimized performance for specific workloads. SIMD instructions like SSE and AVX accelerate multimedia, scientific computing, and AI workloads by processing multiple data points simultaneously. Features like AES-NI provide hardware-accelerated encryption, while AVX-512 (if supported) enables advanced vector processing for data centers and high-performance computing. These instruction sets are critical for software compatibility and performance in modern applications.

MMX
SSE
SSE2
SSE3
SSSE3
SSE4.1
SSE4.2
AVX
AVX2
FMA3
AES-NI
F16C
BMI1
BMI2
Intel 64
VT-x
VT-d
πŸ”Œ

i5-6600K Power & Thermal

TDP and power specifications

The Intel Core i5-6600K has a TDP (Thermal Design Power) of 91W, indicating the cooling solution required for sustained operation. TDP affects both system power consumption and the type of cooler needed. Lower TDP processors are ideal for compact builds and laptops, while higher TDP chips typically offer better sustained performance in demanding CPU benchmarks. Understanding power requirements helps ensure your system can deliver consistent performance without thermal throttling.

TDP
91W
πŸ”§

Intel Socket 1151 Platform & Socket

Compatibility information

The Core i5-6600K uses the Intel Socket 1151 socket, which determines motherboard compatibility. Choosing the right platform is essential for building a system around this processor. The socket type also influences available features like PCIe lanes, memory support, and upgrade paths. When comparing CPU benchmarks, ensure you're looking at processors compatible with your existing or planned motherboard to make informed purchasing decisions.

Socket
Intel Socket 1151
Chipsets
Intel 100 Series, Intel 200 Series
PCIe
Gen 3, 16 Lanes(CPU only)
Package
FC-LGA14C
DDR5

Intel Socket 1151 Memory Support

RAM compatibility and speeds

Memory support specifications for the i5-6600K define which RAM types and speeds are compatible. Faster memory can significantly improve CPU benchmark performance, especially in memory-intensive applications and gaming. The memory controller integrated into the Core i5-6600K determines maximum supported speeds and channels. Dual-channel or quad-channel memory configurations can double or quadruple memory bandwidth, providing noticeable performance gains in content creation and scientific workloads.

Memory Type
DDR3, DDR4
Memory Bus
Dual-channel
Memory Bandwidth
34.1 GB/s
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Intel's Core i5-6600K Integrated Graphics

Built-in GPU specifications

The Intel Core i5-6600K includes integrated graphics, eliminating the need for a dedicated GPU in basic computing scenarios. Integrated graphics are ideal for office productivity, video playback, and light gaming. While not designed for demanding GPU benchmarks, the iGPU in the i5-6600K provides hardware video encoding and decoding capabilities. This makes the processor suitable for compact builds, HTPCs, and systems where power efficiency is prioritized over gaming performance.

iGPU
HD Graphics 530
Graphics Model
HD Graphics 530
πŸ“¦

Core i5-6600K Product Information

Release and pricing details

The Intel Core i5-6600K is manufactured by Intel and represents their commitment to delivering competitive CPU performance. Understanding the release date and pricing helps contextualize benchmark comparisons with other processors from the same generation. Launch pricing provides a baseline for evaluating value, though street prices often differ. Whether you're building a new system or upgrading, the Core i5-6600K by Intel offers a specific balance of performance, features, and cost within Intel's product lineup.

Manufacturer
Intel
Release Date
Aug 2015
Launch Price
$242
Market
Desktop
Status
End-of-life
Part Number
SR2L4

Core i5-6600K Benchmark Scores

cinebench_cinebench_r15_multicoreSource

Cinebench R15 multi-core renders a complex 3D scene using all CPU threads simultaneously. This test reveals how Intel Core i5-6600K performs in parallel rendering workloads.

cinebench_cinebench_r15_multicore #1073 of 1788
540
4%
Max: 14,978
Compare with other CPUs

cinebench_cinebench_r15_singlecoreSource

Cinebench R15 single-core measures the speed of one CPU thread rendering 3D geometry. This score indicates how Intel Core i5-6600K handles tasks that can't be parallelized.

cinebench_cinebench_r15_singlecore #1071 of 1245
76
4%
Max: 2,114

cinebench_cinebench_r20_multicoreSource

Cinebench R20 multi-core uses a scene requiring 4x more computational power than R15. This test better reflects modern CPU capabilities for professional rendering on Intel Core i5-6600K. The more demanding workload provides better differentiation between current-generation processors. Content creators and 3D artists use this benchmark to estimate real-world render performance.

cinebench_cinebench_r20_multicore #1073 of 1788
2,250
4%
Max: 62,412
Compare with other CPUs

cinebench_cinebench_r20_singlecoreSource

Cinebench R20 single-core tests one thread against a more demanding scene than R15. This reveals the true single-thread rendering capability of Intel Core i5-6600K. The increased complexity provides more accurate performance differentiation between modern CPUs. Single-thread performance remains critical for gaming and applications with serial bottlenecks.

cinebench_cinebench_r20_singlecore #1072 of 1784
317
4%
Max: 8,811

cinebench_cinebench_r23_multicoreSource

Cinebench R23 multi-core is the current standard for CPU rendering benchmarks with a 10-minute minimum runtime. This extended test reveals sustained performance of Intel Core i5-6600K after thermal limits kick in. The longer duration exposes cooling limitations that shorter benchmarks miss. Professional users rely on R23 scores to predict real-world rendering performance under sustained workloads.

cinebench_cinebench_r23_multicore #1073 of 1788
5,358
4%
Max: 148,601
Compare with other CPUs

πŸ† Top 5 Performers

cinebench_cinebench_r23_singlecoreSource

Cinebench R23 single-core measures sustained single-thread performance over 10 minutes. This reveals how Intel Core i5-6600K maintains boost clocks under continuous load. The extended runtime shows whether thermal throttling affects single-core performance. This score is particularly important for understanding real-world responsiveness beyond initial boost behavior.

cinebench_cinebench_r23_singlecore #1074 of 1788
756
4%
Max: 20,979

geekbench_multicoreSource

Geekbench multi-core tests Intel Core i5-6600K across real-world workloads including image processing, machine learning, and data compression. All available threads are utilized to measure parallel performance. Higher scores indicate better capability in multitasking and content creation. The cross-platform nature of Geekbench allows direct comparison with systems running different operating systems.

geekbench_multicore #378 of 711
4,037
18%
Max: 22,515
Compare with other CPUs

geekbench_singlecoreSource

Geekbench single-core measures how fast one thread of Intel Core i5-6600K can process tasks like web browsing and document editing. This score correlates with how snappy the system feels during normal use. Many applications still depend primarily on single-thread performance. Gaming performance is also heavily influenced by single-core speed in CPU-limited scenarios.

geekbench_singlecore #311 of 711
1,428
42%
Max: 3,401
Compare with other CPUs

About Intel Core i5-6600K

Intel's I5-6600K, launched in August 2015 as part of the Skylake generation, carves a niche for itself with its 4-core, 4-thread architecture, eschewing hyper-threading in favor of raw clock speed potential. Its base clock of 3.50 GHz and turbo boost of 3.90 GHz offer a compelling mix of responsiveness and peak performance, making it a standout for gamers prioritizing high frame rates in titles that don’t fully tax multi-threaded workloads. The chip’s 14 nm process and 6 MB shared L3 cache contribute to efficient data handling, reducing latency in real-time scenarios like competitive gaming or streaming. While not a powerhouse for multi-threaded tasks, the I5-6600K’s design caters to users who balance gaming with lighter productivity, avoiding the overhead of additional threads. Its 91W TDP strikes a reasonable balance between performance and thermals, ensuring it remains a viable option for mid-tower builds even years after release. The I5-6600K’s Socket 1151 compatibility and $242 launch price positioned it as a budget-friendly alternative to higher-tier processors in its era, though modern benchmarks reveal its limitations. Scores like 5,358 points in Cinebench R23 multi-core and 1,428 points in Geekbench single-core highlight its mid-range capabilities, sufficient for gaming but lagging behind newer architectures in heavy workloads. Gamers leveraging this chip today would benefit most from titles that scale well with clock speed, such as AAA titles with single-threaded bottlenecks, while productivity tasks like video editing might feel constrained. Despite its age, the I5-6600K remains a testament to Intel’s focus on gaming-friendly tuning in the Skylake lineup, offering a reliable foundation for enthusiasts who pair it with a capable GPU. Its legacy endures in systems where cost, power efficiency, and gaming performance intersect.

The AMD Equivalent of Core i5-6600K

Looking for a similar processor from AMD? The AMD Ryzen 5 1400 offers comparable performance and features in the AMD lineup.

AMD Ryzen 5 1400

AMD β€’ 4 Cores

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