i5-7640K vs i7-3820

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Primary details

Comparing Core i7-3820 and Core i5-7640K processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking1486not rated
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation2.32no data
Market segmentDesktop processorDesktop processor
Power efficiency2.64no data
Architecture codenameSandy Bridge-E (2011−2013)Kaby Lake-X (2017)
Release dateFebruary 2012 (12 years ago)no data (2024 years ago)
Launch price (MSRP)$400no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i7-3820 and Core i5-7640K basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores4 (Quad-Core)4 (Quad-Core)
Threads8no data
Base clock speed3.6 GHzno data
Boost clock speed3.8 GHz3.9 GHz
Bus rate5 GT/sno data
L1 cache64 KB (per core)64 KB (per core)
L2 cache256 KB (per core)256 KB (per core)
L3 cache10240 KB (shared)6144 KB (shared)
Chip lithography32 nm14 nm
Die size294 mm2no data
Maximum case temperature (TCase)67 °C72 °C
Number of transistors1270 millionno data
64 bit support++
Windows 11 compatibility--
Unlocked multiplier-+

Compatibility

Information on Core i7-3820 and Core i5-7640K compatibility with other computer components: 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 configuration11
SocketFCLGA20111151
Power consumption (TDP)130 Watt112 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-3820 and Core i5-7640K. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.2, Intel® AVXno data
AES-NI++
AVX++
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.0no data
Hyper-Threading Technology+no data
Idle States+no data
Thermal Monitoring+-
Smart Response+no data
Demand Based Switching-no data

Security technologies

Core i7-3820 and Core i5-7640K technologies aimed at improving security, for example, by protecting against hacks.

TXT-no data
EDB+no data
Identity Protection+-

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-3820 and Core i5-7640K are enumerated here.

VT-d+no data
VT-x++
EPT+no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-3820 and Core i5-7640K. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR4
Maximum memory size64.23 GBno data
Max memory channels4no data
Maximum memory bandwidth51.2 GB/sno data

Peripherals

Specifications and connection of peripherals supported by Core i7-3820 and Core i5-7640K.

PCIe version2.0no data
PCI Express lanes40no data

Pros & cons summary


Chip lithography 32 nm 14 nm
Power consumption (TDP) 130 Watt 112 Watt

i5-7640K has a 128.6% more advanced lithography process, and 16.1% lower power consumption.

We couldn't decide between Core i7-3820 and Core i5-7640K. We've got no test results to judge.


Should you still have questions on choice between Core i7-3820 and Core i5-7640K, ask them in Comments section, and we shall answer.

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Intel Core i7-3820
Core i7-3820
Intel Core i5-7640K
Core i5-7640K

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Community ratings

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