Core i7-3820: specs and benchmarks

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Aggregate performance score

Core i7-3820
2012
4 cores / 8 threads, 130 Watt
3.63

Core i7-3820 provides poor benchmark performance at 3.63% of a leader's which is a 96-core EPYC 9655P.

Summary

Intel started Core i7-3820 sales on February 2012 at a recommended price of $400. This is a Sandy Bridge-E architecture desktop processor primarily aimed at office systems. It has 4 cores and 8 threads, and is based on 32 nm manufacturing technology, with a maximum frequency of 3800 MHz and a locked multiplier.

Compatibility-wise, this is FCLGA2011 processor with a TDP of 130 Watt and a maximum temperature of 67 °C. It supports DDR3 memory.

Primary details

Core i7-3820 processor market type (desktop or notebook), architecture, sales start time and pricing.

Place in the ranking1502
Place by popularitynot in top-100
Cost-effectiveness evaluation2.32
Market segmentDesktop processor
Power efficiency2.64of 100.00 (Ryzen Z1 Extreme)
Architecture codenameSandy Bridge-E (2011−2013)
Release dateFebruary 2012 (12 years ago)
Launch price (MSRP)$400of 17,906 (Xeon Platinum 8280L)

Cost-effectiveness evaluation

Performance per price, higher is better.

Detailed specifications

Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.

Physical cores4 (Quad-Core)
Threads8
Base clock speed3.6 GHzof 4.7 GHz (FX-9590)
Boost clock speed3.8 GHzof 6.2 GHz (Core i9-14900KS)
Bus rate5 GT/s
L1 cache64 KB (per core)of 80 KB (EPYC 9965)
L2 cache256 KB (per core)
L3 cache10240 KB (shared)of 1152 MB (EPYC 9684X)
Chip lithography32 nmof 3 nm (Apple M3 Max 16-Core)
Die size294 mm2
Maximum case temperature (TCase)67 °Cof 105 °C (Core i7-5950HQ)
Number of transistors1270 millionof 135,240 million (EPYC 9684X)
64 bit support+
Windows 11 compatibility-

Compatibility

Information on Core i7-3820 compatibility with other computer components and devices: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration1of 8 (Opteron 842)
SocketFCLGA2011
Power consumption (TDP)130 Wattof 500 Watt (Xeon 6960P)

Technologies and extensions

Technological capabilities and additional instructions supported by Core i7-3820. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.2, Intel® AVX
AES-NI+
AVX+
Enhanced SpeedStep (EIST)+
Turbo Boost Technology2.0
Hyper-Threading Technology+
Idle States+
Thermal Monitoring+
Smart Response+
Demand Based Switching-

Security technologies

Processor technologies aimed at improving security, for example, by protecting against hacks.

TXT-
EDB+
Identity Protection+

Virtualization technologies

Supported virtual machine optimization technologies. Some are specific to Intel only, some to AMD.

VT-d+
VT-x+
EPT+

Memory specs

Types, maximum amount and channel number of RAM supported by Core i7-3820's memory controller. Depending on the motherboard, higher memory frequency may be supported.

Supported memory typesDDR3
Maximum memory size64.23 GBof 6 TiB (EPYC 9124)
Max memory channels4of 12 (Xeon Platinum 9221)
Maximum memory bandwidth51.2 GB/sof 460.8 GB/s (EPYC 9124)

Peripherals

Specifications and connection types of supported peripherals.

PCIe version2.0of 5.0 (Core i9-12900K)
PCI Express lanes40of 128 (EPYC 7551P)

Benchmark performance

Single-core and multi-core benchmark results of Core i7-3820. Overall benchmark performance is measured in points in 0-100 range, higher is better.


Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

i7-3820 3.63

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

i7-3820 5773

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

i7-3820 622

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

i7-3820 2289

3DMark Fire Strike Physics

i7-3820 6240

Gaming performance

Closest competitors

Core i7-3820's performance relative to its closest rivals among desktop CPUs.


FX-8350 103.03
Core i7-4770T 102.75
Core i5-7600T 102.48
Core i7-3820 100

AMD equivalent

According to our data, the closest AMD alternative to Core i7-3820 is Phenom II X6 1100T BE, which is nearly equal in speed and lower by 4 positions in our ranking.

Here are some closest AMD rivals to Core i7-3820:

FX-8350 103.03
Core i7-3820 100
FX-8320 94.49
FX-8300 92.56

Similar processors

Here is our recommendation of several processors that are more or less close in performance to the one reviewed.

Recommended GPUs

People consider these graphics cards to be good for Core i7-3820, according to our PC configuration statistics.

These are the fastest graphics cards for Core i7-3820 in our user configuration statistics. There is a total of 1531 configurations using Core i7-3820 in our database.

RTX 4090 GeForce RTX 4090
0.9% (14/1531)
RTX 4070 Ti GeForce RTX 4070 Ti
0.1% (2/1531)
RX 7900 XTX Radeon RX 7900 XTX
0.07% (1/1531)
RTX 3090 Ti GeForce RTX 3090 Ti
0.3% (4/1531)
RX 7900 XT Radeon RX 7900 XT
0.07% (1/1531)
RTX 3080 Ti GeForce RTX 3080 Ti
0.3% (4/1531)
RX 6900 Radeon RX 6900
0.07% (1/1531)
RTX 3090 GeForce RTX 3090
0.1% (2/1531)
RTX 3080 GeForce RTX 3080
0.2% (3/1531)
RX 7800 XT Radeon RX 7800 XT
0.07% (1/1531)

All comparisons with Core i7-3820

Community ratings

Here is the rating given to the reviewed processor by our users. Let others know your opinion by rating it yourself.


3.7 326 votes

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Questions & comments

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