i3-4005U vs i7-4940MX

VS

Aggregate performance score

Core i7-4940MX
2014
4 cores / 8 threads, 57 Watt
4.30
+310%
Core i3-4005U
2013
2 cores / 4 threads, 15 Watt
1.05

Core i7-4940MX outperforms Core i3-4005U by a whopping 310% based on our aggregate benchmark results.

Primary details

Comparing Core i7-4940MX and Core i3-4005U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking13682440
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
SeriesIntel Core i7Intel Core i3
Power efficiency7.146.62
Architecture codenameHaswell (2013−2015)Haswell (2013−2015)
Release date20 January 2014 (10 years ago)4 September 2013 (11 years ago)
Launch price (MSRP)$1,096no data

Detailed specifications

Core i7-4940MX 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 cores4 (Quad-Core)2 (Dual-core)
Threads84
Base clock speed3.1 GHz1.7 GHz
Boost clock speed4 GHz1.7 GHz
Bus rate5 GT/s5 GT/s
L1 cache64K (per core)64K (per core)
L2 cache256K (per core)256K (per core)
L3 cache8 MB (shared)3 MB (shared)
Chip lithography22 nm22 nm
Die size177 mm2118 mm2
Maximum core temperature100 °C100 °C
Maximum case temperature (TCase)100 °Cno data
Number of transistors1,400 million1,400 million
64 bit support++
Windows 11 compatibility--
Unlocked multiplier+-

Compatibility

Information on Core i7-4940MX 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
SocketFCPGA946FCBGA1168
Power consumption (TDP)57 Watt15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-4940MX and Core i3-4005U. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.1, Intel® SSE4.2, Intel® AVX2Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2
AES-NI++
AVX++
vPro+-
Enhanced SpeedStep (EIST)++
Turbo Boost Technology2.0-
Hyper-Threading Technology++
TSX+-
Idle States++
Thermal Monitoring++
Smart Responseno data-
GPIOno data+
Smart Connectno data+
FDI+-
AMTno data9.5
Matrix Storageno data-
HD Audiono data+
RSTno data+

Security technologies

Core i7-4940MX and Core i3-4005U technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDB++
Secure Key++
Identity Protection++
Anti-Theft++

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-4940MX 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 i7-4940MX and Core i3-4005U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR3
Maximum memory size32 GB16 GB
Max memory channels22
Maximum memory bandwidth25.6 GB/s25.6 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare
Intel HD Graphics 4600Intel HD Graphics 4400
Max video memory1.7 GB2 GB
Quick Sync Video++
Clear Video HD++
Graphics max frequency1.35 GHz950 MHz
InTru 3D++

Graphics interfaces

Available interfaces and connections of Core i7-4940MX and Core i3-4005U integrated GPUs.

Number of displays supported33
eDP++
DisplayPort++
HDMI++
VGA+no data

Graphics image quality

Maximum display resolutions supported by Core i7-4940MX 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 i7-4940MX 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 i7-4940MX and Core i3-4005U.

PCIe version32.0
PCI Express lanes1610
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.

i7-4940MX 4.30
+310%
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.

i7-4940MX 6832
+311%
i3-4005U 1662

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.

i7-4940MX 1241
+141%
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.

i7-4940MX 4016
+287%
i3-4005U 1037

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

i7-4940MX 5853
+133%
i3-4005U 2514

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

i7-4940MX 21022
+268%
i3-4005U 5706

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

i7-4940MX 7678
+247%
i3-4005U 2211

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

i7-4940MX 7
+317%
i3-4005U 29.2

Cinebench 11.5 64-bit multi-core

Cinebench Release 11.5 Multi Core is a variant of Cinebench R11.5 which uses all the processor threads. A maximum of 64 threads is supported in this version.

i7-4940MX 8
+313%
i3-4005U 2

Cinebench 15 64-bit multi-core

Cinebench Release 15 Multi Core is a variant of Cinebench R15 which uses all the processor threads.

i7-4940MX 708
+312%
i3-4005U 172

Cinebench 15 64-bit single-core

Cinebench R15 (standing for Release 15) is a benchmark made by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version (sometimes called Single-Thread) only uses a single processor thread to render a room full of reflective spheres and light sources.

i7-4940MX 157
+131%
i3-4005U 68

Cinebench 11.5 64-bit single-core

Cinebench R11.5 is an old benchmark by Maxon, authors of Cinema 4D. It was superseded by later versions of Cinebench, which use more modern variants of Cinema 4D engine. The Single Core version loads a single thread with ray tracing to render a glossy room full of crystal spheres and light sources.

i7-4940MX 1.77
+133%
i3-4005U 0.76

TrueCrypt AES

TrueCrypt is a discontinued piece of software that was widely used for on-the-fly-encryption of disk partitions, now superseded by VeraCrypt. It contains several embedded performance tests, one of them being TrueCrypt AES, which measures data encryption speed using AES algorithm. Result is encryption speed in gigabytes per second.

i7-4940MX 4.1
+310%
i3-4005U 1

x264 encoding pass 2

x264 Pass 2 is a slower variant of x264 video compression that produces a variable bit rate output file, which results in better quality since the higher bit rate is used when it is needed more. Benchmark result is still measured in frames per second.  

i7-4940MX 43
+292%
i3-4005U 11

x264 encoding pass 1

x264 version 4.0 is a video encoding benchmark uses MPEG 4 x264 compression method to compress a sample HD (720p) video. Pass 1 is a faster variant that produces a constant bit rate output file. Its result is measured in frames per second, which means how many frames of the source video file were encoded per second.  

i7-4940MX 167
+190%
i3-4005U 58

Gaming performance

Pros & cons summary


Performance score 4.30 1.05
Integrated graphics card 1.84 1.36
Recency 20 January 2014 4 September 2013
Physical cores 4 2
Threads 8 4
Power consumption (TDP) 57 Watt 15 Watt

i7-4940MX has a 309.5% higher aggregate performance score, 35.3% faster integrated GPU, an age advantage of 4 months, and 100% more physical cores and 100% more threads.

i3-4005U, on the other hand, has 280% lower power consumption.

The Core i7-4940MX is our recommended choice as it beats the Core i3-4005U in performance tests.


Should you still have questions on choice between Core i7-4940MX and Core i3-4005U, ask them in Comments section, and we shall answer.

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Intel Core i7-4940MX
Core i7-4940MX
Intel Core i3-4005U
Core i3-4005U

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Community ratings

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Questions & comments

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