i3-4005U vs i7-5820K

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Aggregate performance score

Core i7-5820K
2014
6 cores / 12 threads, 140 Watt
6.20
+490%
Core i3-4005U
2013
2 cores / 4 threads, 15 Watt
1.05

Core i7-5820K outperforms Core i3-4005U by a whopping 490% based on our aggregate benchmark results.

Primary details

Comparing Core i7-5820K and Core i3-4005U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking10872440
Place by popularitynot in top-100not in top-100
Cost-effectiveness evaluation1.19no data
Market segmentDesktop processorLaptop
Seriesno dataIntel Core i3
Power efficiency4.196.62
Architecture codenameHaswell-E (2014)Haswell (2013−2015)
Release date1 September 2014 (10 years ago)4 September 2013 (11 years ago)
Launch price (MSRP)$410no data

Cost-effectiveness evaluation

Performance per price, higher is better.

no data

Detailed specifications

Core i7-5820K and Core i3-4005U 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 cores6 (Hexa-Core)2 (Dual-core)
Threads124
Base clock speed3.3 GHz1.7 GHz
Boost clock speed3.6 GHz1.7 GHz
Bus rate0 GT/s5 GT/s
L1 cache64 KB (per core)64K (per core)
L2 cache256 KB (per core)256K (per core)
L3 cache15 MB (shared)3 MB (shared)
Chip lithography22 nm22 nm
Die size356 mm2118 mm2
Maximum core temperature67 °C100 °C
Number of transistors2,600 million1,400 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier+-

Compatibility

Information on Core i7-5820K and Core i3-4005U 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
SocketFCLGA2011FCBGA1168
Power consumption (TDP)140 Watt15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-5820K and Core i3-4005U. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.2, Intel® AVX2Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI++
AVX++
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.0-
Hyper-Threading Technology++
TSX+-
Idle States++
Thermal Monitoring++
Smart Response+-
Demand Based Switching-no data
GPIOno data+
Smart Connectno data+
FDIno data-
AMTno data9.5
Matrix Storageno data-
HD Audiono data+
RSTno data+

Security technologies

Core i7-5820K and Core i3-4005U technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDB++
Secure Keyno data+
Identity Protection++
Anti-Theftno data+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-5820K and Core i3-4005U are enumerated here.

AMD-V-+
VT-d++
VT-x++
EPT++

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-5820K and Core i3-4005U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR4DDR3
Maximum memory size64 GB16 GB
Max memory channels42
Maximum memory bandwidth68 GB/s25.6 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardno dataIntel HD Graphics 4400
Max video memoryno data2 GB
Quick Sync Video-+
Clear Video HDno data+
Graphics max frequencyno data950 MHz
InTru 3Dno data+

Graphics interfaces

Available interfaces and connections of Core i7-5820K and Core i3-4005U integrated GPUs.

Number of displays supportedno data3
eDPno data+
DisplayPort-+
HDMI-+

Graphics image quality

Maximum display resolutions supported by Core i7-5820K and Core i3-4005U integrated GPUs, including resolutions over different interfaces.

Max resolution over HDMI 1.4no data3200x2000@60Hz
Max resolution over DisplayPortno data3200x2000@60Hz
Max resolution over VGAno dataN/A

Graphics API support

APIs supported by Core i7-5820K and Core i3-4005U integrated GPUs, sometimes API versions are included.

DirectXno data11.2/12
OpenGLno data4.3

Peripherals

Specifications and connection of peripherals supported by Core i7-5820K and Core i3-4005U.

PCIe version3.02.0
PCI Express lanes2810
PCI supportno data-
USB revisionno data3.0
Total number of SATA portsno data2
Max number of SATA 6 Gb/s Portsno data2
Integrated IDEno data-
Number of USB portsno data4
Integrated LANno data-
UARTno data+

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score 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.

i7-5820K 6.20
+490%
i3-4005U 1.05

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.

i7-5820K 9841
+492%
i3-4005U 1661

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.

i7-5820K 1171
+127%
i3-4005U 515

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.

i7-5820K 5454
+426%
i3-4005U 1037

Gaming performance

Pros & cons summary


Performance score 6.20 1.05
Recency 1 September 2014 4 September 2013
Physical cores 6 2
Threads 12 4
Power consumption (TDP) 140 Watt 15 Watt

i7-5820K has a 490.5% higher aggregate performance score, an age advantage of 11 months, and 200% more physical cores and 200% more threads.

i3-4005U, on the other hand, has 833.3% lower power consumption.

The Core i7-5820K is our recommended choice as it beats the Core i3-4005U in performance tests.

Note that Core i7-5820K is a desktop processor while Core i3-4005U is a notebook one.


Should you still have questions on choice between Core i7-5820K and Core i3-4005U, ask them in Comments section, and we shall answer.

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Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core i7-5820K
Core i7-5820K
Intel Core i3-4005U
Core i3-4005U

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Community ratings

Here you can see how users rate the processors, as well as rate them yourself.


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Questions & comments

Here you can ask a question about Core i7-5820K or Core i3-4005U, agree or disagree with our judgements, or report an error or mismatch.