i7-8650U vs i7-4940MX

VS

Aggregate performance score

Core i7-4940MX
2014
4 cores / 8 threads, 57 Watt
4.30
+9.4%
Core i7-8650U
2017
4 cores / 8 threads, 15 Watt
3.93

Core i7-4940MX outperforms Core i7-8650U by a small 9% based on our aggregate benchmark results.

Primary details

Comparing Core i7-4940MX and Core i7-8650U processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking13681445
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
SeriesIntel Core i7Intel Core i7
Power efficiency7.1424.79
Architecture codenameHaswell (2013−2015)Kaby Lake Refresh (2017−2019)
Release date20 January 2014 (10 years ago)21 August 2017 (7 years ago)
Launch price (MSRP)$1,096$409

Detailed specifications

Core i7-4940MX and Core i7-8650U 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)
Threads88
Base clock speed3.1 GHz1.9 GHz
Boost clock speed4 GHz4.2 GHz
Bus typeno dataOPI
Bus rate5 GT/s4 GT/s
Multiplierno data19
L1 cache64K (per core)64K (per core)
L2 cache256K (per core)256K (per core)
L3 cache8 MB (shared)8 MB (shared)
Chip lithography22 nm14 nm
Die size177 mm2123 mm2
Maximum core temperature100 °C100 °C
Maximum case temperature (TCase)100 °C72 °C
Number of transistors1,400 millionno data
64 bit support++
Windows 11 compatibility-+
Unlocked multiplier+-

Compatibility

Information on Core i7-4940MX and Core i7-8650U 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 (Uniprocessor)
SocketFCPGA946FCBGA1356,FC-BGA1356
Power consumption (TDP)57 Watt15 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-4940MX and Core i7-8650U. 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+no data
Enhanced SpeedStep (EIST)++
Speed Shiftno data+
My WiFino data+
Turbo Boost Technology2.02.0
Hyper-Threading Technology++
TSX++
Idle States++
Thermal Monitoring++
Flex Memory Accessno data+
SIPP-+
Smart Responseno data+
FDI+no data

Security technologies

Core i7-4940MX and Core i7-8650U technologies aimed at improving security, for example, by protecting against hacks.

TXT++
EDB++
Secure Key++
Identity Protection++
SGXno dataYes with Intel® ME
OS Guardno data+
Anti-Theft+no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-4940MX and Core i7-8650U 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 i7-8650U. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3DDR4
Maximum memory size32 GB32 GB
Max memory channels22
Maximum memory bandwidth25.6 GB/s38.397 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card
Compare
Intel HD Graphics 4600Intel UHD Graphics 620
Max video memory1.7 GB32 GB
Quick Sync Video++
Clear Videono data+
Clear Video HD++
Graphics max frequency1.35 GHz1.15 GHz
InTru 3D+no data

Graphics interfaces

Available interfaces and connections of Core i7-4940MX and Core i7-8650U integrated GPUs.

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

Graphics image quality

Maximum display resolutions supported by Core i7-4940MX and Core i7-8650U integrated GPUs, including resolutions over different interfaces.

4K resolution supportno data+
Max resolution over HDMI 1.4no data4096 x 2304@24Hz
Max resolution over eDPno data4096 x 2304@60Hz
Max resolution over DisplayPortno data4096 x 2304@60Hz

Graphics API support

APIs supported by Core i7-4940MX and Core i7-8650U integrated GPUs, sometimes API versions are included.

DirectXno data12
OpenGLno data4.4

Peripherals

Specifications and connection of peripherals supported by Core i7-4940MX and Core i7-8650U.

PCIe version33.0
PCI Express lanes1612

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
+9.4%
i7-8650U 3.93

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
+9.4%
i7-8650U 6247

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 1239
+38.4%
i7-8650U 895

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 4003
+47.7%
i7-8650U 2710

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
i7-8650U 6629
+13.3%

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
+12.8%
i7-8650U 18635

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
+10.7%
i7-8650U 6936

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
+42%
i7-8650U 9.94

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
+12%
i7-8650U 7

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
+17%
i7-8650U 605

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
i7-8650U 169
+7.6%

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
i7-8650U 1.92
+8.5%

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
i7-8650U 4.3
+4.9%

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
+7.9%
i7-8650U 40

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
i7-8650U 170
+1.3%

Gaming performance

Pros & cons summary


Performance score 4.30 3.93
Integrated graphics card 1.84 2.67
Recency 20 January 2014 21 August 2017
Chip lithography 22 nm 14 nm
Power consumption (TDP) 57 Watt 15 Watt

i7-4940MX has a 9.4% higher aggregate performance score.

i7-8650U, on the other hand, has 45.1% faster integrated GPU, an age advantage of 3 years, a 57.1% more advanced lithography process, and 280% lower power consumption.

Given the minimal performance differences, no clear winner can be declared between Core i7-4940MX and Core i7-8650U.


Should you still have questions on choice between Core i7-4940MX and Core i7-8650U, ask them in Comments section, and we shall answer.

Vote for your favorite

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


Intel Core i7-4940MX
Core i7-4940MX
Intel Core i7-8650U
Core i7-8650U

Similar processor comparisons

We picked several similar comparisons of processors in the same market segment and performance relatively close to those reviewed on this page.

Community ratings

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


4.1 85 votes

Rate Core i7-4940MX on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5
3.7 458 votes

Rate Core i7-8650U on a scale of 1 to 5:

  • 1
  • 2
  • 3
  • 4
  • 5

Questions & comments

Here you can ask a question about Core i7-4940MX or Core i7-8650U, agree or disagree with our judgements, or report an error or mismatch.