INTEL

Intel Core i7-3820

Intel processor specifications and benchmark scores

4
Cores
8
Threads
3.8
GHz Boost
130W
TDP
πŸ”“Unlocked

Intel Core i7-3820 Specifications

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Core i7-3820 Core Configuration

Processing cores and threading

The Intel Core i7-3820 features 4 physical cores and 8 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
8
SMP CPUs
1
⏱️

i7-3820 Clock Speeds

Base and boost frequencies

Clock speed is a critical factor in Core i7-3820 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 i7-3820 by Intel can dynamically adjust its frequency based on workload and thermal headroom.

Base Clock
3.6 GHz
Boost Clock
3.8 GHz
Multiplier
36x πŸ”“
πŸ’Ύ

Intel's Core i7-3820 Cache Hierarchy

L1, L2, L3 cache sizes

Cache memory is ultra-fast storage built directly into the i7-3820 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 i7-3820'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
10 MB (shared)
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Sandy Bridge Architecture & Process

Manufacturing and design details

The Intel Core i7-3820 is built on Intel's 32 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 i7-3820 incorporate advanced branch prediction and out-of-order execution for optimal performance.

Architecture
Sandy Bridge
Codename
Sandy Bridge-E
Process Node
32 nm
Foundry
Intel
Transistors
1,270 million
Die Size
294 mmΒ²
Generation
Core i7 (Sandy Bridge-E)
πŸ”’

Sandy Bridge Instruction Set Features

Supported CPU instructions and extensions

The Core i7-3820 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
AES-NI
Intel 64
VT-x
VT-d
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i7-3820 Power & Thermal

TDP and power specifications

The Intel Core i7-3820 has a TDP (Thermal Design Power) of 130W, 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
130W
πŸ”§

Intel Socket 2011 Platform & Socket

Compatibility information

The Core i7-3820 uses the Intel Socket 2011 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 2011
PCIe
Gen 2, 40 Lanes(CPU only)
Package
FC-LGA10
DDR5

Intel Socket 2011 Memory Support

RAM compatibility and speeds

Memory support specifications for the i7-3820 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 i7-3820 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
Memory Bus
Quad-channel
Memory Bandwidth
51.2 GB/s
πŸ“¦

Core i7-3820 Product Information

Release and pricing details

The Intel Core i7-3820 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 i7-3820 by Intel offers a specific balance of performance, features, and cost within Intel's product lineup.

Manufacturer
Intel
Release Date
Feb 2012
Launch Price
$305
Market
Desktop
Status
End-of-life
Part Number
SR0LD

Core i7-3820 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 i7-3820 performs in parallel rendering workloads.

cinebench_cinebench_r15_multicore #1110 of 1788
495
3%
Max: 14,978

cinebench_cinebench_r15_singlecoreSource

Cinebench R15 single-core measures the speed of one CPU thread rendering 3D geometry. This score indicates how Intel Core i7-3820 handles tasks that can't be parallelized.

cinebench_cinebench_r15_singlecore #1112 of 1245
69
3%
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 i7-3820. 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 #1110 of 1788
2,065
3%
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 i7-3820. 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 #1109 of 1784
291
3%
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 i7-3820 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 #1110 of 1788
4,918
3%
Max: 148,601
Compare with other CPUs

cinebench_cinebench_r23_singlecoreSource

Cinebench R23 single-core measures sustained single-thread performance over 10 minutes. This reveals how Intel Core i7-3820 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 #1110 of 1788
694
3%
Max: 20,979

About Intel Core i7-3820

The Intel Core i7-3820 CPU brings practical performance to both everyday computing and light professional workloads. Sporting four cores and eight threads with a base clock of 3.60 GHz, the i7-3820 ensures snappy multitasking for applications ranging from office suites to content streaming. When Turbo Boost is active, the i7-3820 processor can reach 3.80 GHz on select cores, providing additional headroom for demanding single-threaded tasks. Benchmark scores, such as 4,918 points in Cinebench R23 multicore and 694 points in singlecore, validate its capability to handle mixed workloads efficiently. This makes the Intel i7-3820 a reliable choice for users requiring consistent performance without compromise.

For workstation users, the Intel Core i7-3820 CPU shines in scenarios that leverage its 10 MB shared L3 cache and 32 nm process technology. It excels in applications like 3D rendering, video editing, and CAD software, with its Cinebench R20 multicore score of 2,065 points highlighting strong parallel performance. The i7-3820 processor’s quad-core design, paired with Hyper-Threading, makes it well-suited for multi-threaded professional tasks that demand both speed and stability. Furthermore, its 130W TDP ensures that it can maintain performance under sustained workloads, making the i7-3820 a dependable option for small to medium workstation builds looking for a balance of power and efficiency.

Considering its value proposition, the Intel Core i7-3820 CPU launched at $305 and remains an attractive option for those building on the Socket 2011 platform. Compared to newer generations, the i7-3820 offers competitive performance per dollar for users not requiring the latest instruction sets or power efficiencies. Platform requirements include an LGA 2011 motherboard, which supports quad-channel memory and multiple PCIe lanes ideal for enthusiasts or professionals looking to upgrade an existing system. For budget-conscious users needing a robust Sandy Bridge-E processor, the Intel i7-3820 delivers a compelling mix of performance, features, and legacy platform support.

The AMD Equivalent of Core i7-3820

Looking for a similar processor from AMD? The AMD Ryzen 7 1700 offers comparable performance and features in the AMD lineup.

AMD Ryzen 7 1700

AMD β€’ 8 Cores

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