Intel Core i7-5820K
Intel processor specifications and benchmark scores
Intel Core i7-5820K Specifications
Core i7-5820K Core Configuration
Processing cores and threading
The Intel Core i7-5820K features 6 physical cores and 12 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.
i7-5820K Clock Speeds
Base and boost frequencies
Clock speed is a critical factor in Core i7-5820K 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 i7-5820K by Intel can dynamically adjust its frequency based on workload and thermal headroom.
Intel's Core i7-5820K Cache Hierarchy
L1, L2, L3 cache sizes
Cache memory is ultra-fast storage built directly into the i7-5820K 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 i7-5820K's cache configuration is optimized for both gaming performance and productivity workloads, minimizing data fetch delays during intensive computations.
Haswell Architecture & Process
Manufacturing and design details
The Intel Core i7-5820K is built on Intel's 22 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 i7-5820K incorporate advanced branch prediction and out-of-order execution for optimal performance.
Haswell Instruction Set Features
Supported CPU instructions and extensions
The Core i7-5820K 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.
i7-5820K Power & Thermal
TDP and power specifications
The Intel Core i7-5820K has a TDP (Thermal Design Power) of 140W, 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.
Intel Socket 2011-3 Platform & Socket
Compatibility information
The Core i7-5820K uses the Intel Socket 2011-3 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.
Intel Socket 2011-3 Memory Support
RAM compatibility and speeds
Memory support specifications for the i7-5820K 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 i7-5820K 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.
Core i7-5820K Product Information
Release and pricing details
The Intel Core i7-5820K 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 i7-5820K by Intel offers a specific balance of performance, features, and cost within Intel's product lineup.
Core i7-5820K 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 i7-5820K performs in parallel rendering workloads like video production and 3D animation. The R15 version remains useful for comparing against older hardware benchmarks. Higher scores directly correlate with faster render times in Cinema 4D and similar 3D applications.
cinebench_cinebench_r15_singlecoreSource
Cinebench R15 single-core measures the speed of one CPU thread rendering 3D geometry. This score indicates how Intel Core i7-5820K handles tasks that can't be parallelized across multiple cores. Games and many desktop applications still rely heavily on single-thread performance. A higher single-core score means snappier system responsiveness in everyday use.
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 i7-5820K. The more demanding workload provides better differentiation between current-generation processors.
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 i7-5820K. The increased complexity provides more accurate performance differentiation between modern CPUs.
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 i7-5820K after thermal limits kick in. The longer duration exposes cooling limitations that shorter benchmarks miss.
cinebench_cinebench_r23_singlecoreSource
Cinebench R23 single-core measures sustained single-thread performance over 10 minutes. This reveals how Intel Core i7-5820K maintains boost clocks under continuous load. The extended runtime shows whether thermal throttling affects single-core performance.
geekbench_multicoreSource
Geekbench multi-core tests Intel Core i7-5820K 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.
geekbench_singlecoreSource
Geekbench single-core measures how fast one thread of Intel Core i7-5820K 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.
About Intel Core i7-5820K
The Intel Core i7-5820K, part of Intel's Haswell-E lineup, represents a high-end desktop processor built on a 22nm manufacturing process. Featuring six cores and twelve threads, it balances multi-threaded performance with a base clock speed of 3.30 GHz and a turbo boost up to 3.60 GHz, all within a 140W TDP envelope. The chip integrates 15MB of shared L3 cache and utilizes the Socket 2011-3 platform, enabling compatibility with X99 chipsets for expanded PCIe lanes and DDR4 memory support. Despite its age, the i7-5820K remains a testament to Intel's chip design philosophy, prioritizing scalability and overclocking flexibility for enthusiasts. Its six-core architecture, paired with robust thermal design, positions it as a durable option for workstations and legacy performance builds. The processor's release in September 2014 marked a shift toward mainstreaming multi-core efficiency in consumer-grade hardware. While newer architectures have since surpassed it, the i7-5820K's design principles continue to influence modern high-core-count CPUs.
Performance benchmarks underscore the i7-5820K's prowess in multi-threaded workloads, scoring 8,347 points in Cinebench R23 and 5,464 points in Geekbench 5 Multi-Core. These metrics highlight its capability to handle demanding tasks like video rendering and 3D modeling, though single-core performance evidenced by 1,178 points in Cinebench R23 Single-Core and 1,174 in Geekbench reflects architectural limitations compared to contemporary processors. The Intel Core i7-5820K excels in parallel processing scenarios, making it a historical benchmark for mid-tier multi-core performance. While its single-threaded metrics lag behind modern CPUs, its multi-core efficiency remains relevant in scenarios prioritizing throughput over latency. This dichotomy makes the i7-5820K a case study in balancing core count and clock speeds, offering insights into pre-Rocket Lake architectural trade-offs. Enthusiasts benchmarking this chip often note its sustained viability in compute-heavy applications despite its aging microarchitecture.
Targeted at enthusiasts and prosumers during its release, the Intel Core i7-5820K occupies a niche market segment bridging consumer and workstation-grade hardware. For contemporary builds, pairing it with an X99 motherboard, DDR4 memory, and a mid-tier GPU like the RTX 3060 offers a balanced legacy setup for budget-conscious users seeking multi-threaded headroom. Cooling solutions should prioritize air or AIO liquid options to manage its 140W TDP, while overclocking potential remains a key draw for performance tuners. The Intel Core i7-5820K's Socket 2011-3 compatibility also allows for multi-GPU configurations, appealing to users requiring expandable PCIe bandwidth. Though unsuitable for cutting-edge gaming, its cost-effective performance profile suits virtualization hosts, media servers, or retroactive gaming rigs. As a relic of Intel's pre-10nm transition, the i7-5820K's market positioning now leans toward value-oriented builds where modern software demands aren't strictly tied to the latest architectures.
The AMD Equivalent of Core i7-5820K
Looking for a similar processor from AMD? The AMD Ryzen 7 1700 offers comparable performance and features in the AMD lineup.
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