Intel Core i7-4600U vs Intel Core i7-3940XM

Comparative analysis of Intel Core i7-4600U and Intel Core i7-3940XM processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Graphics interfaces, Graphics image quality, Graphics API support, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps), 3DMark Fire Strike - Physics Score.

Intel Core i7-4600U

Intel Core i7-3940XM

Differences

Reasons to consider the Intel Core i7-4600U

CPU is newer: launch date 11 month(s) later
3.7x lower typical power consumption: 15 Watt vs 55 Watt
Around 83% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 30.46 vs 16.624
Around 83% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 10.252 vs 5.598

Specifications (specs)
Launch date	1 September 2013 vs 30 September 2012
Thermal Design Power (TDP)	15 Watt vs 55 Watt
Benchmarks
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	30.46 vs 16.624
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	10.252 vs 5.598

Reasons to consider the Intel Core i7-3940XM

Processor is unlocked, an unlocked multiplier allows for easier overclocking
2 more cores, run more applications at once: 4 vs 2
4 more threads: 8 vs 4
Around 18% higher clock speed: 3.90 GHz vs 3.30 GHz
Around 5% higher maximum core temperature: 105 °C vs 100°C
2x more L1 cache, more data can be stored in the L1 cache for quick access later
2x more L2 cache, more data can be stored in the L2 cache for quick access later
2x more L3 cache, more data can be stored in the L3 cache for quick access later
2x more maximum memory size: 32 GB vs 16 GB
Around 16% better performance in PassMark - Single thread mark: 1911 vs 1654
2.1x better performance in PassMark - CPU mark: 5840 vs 2719
Around 10% better performance in Geekbench 4 - Single Core: 741 vs 672
2.1x better performance in Geekbench 4 - Multi-Core: 2890 vs 1363
2.3x better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 14.555 vs 6.333
2.2x better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.613 vs 0.276
2x better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 2.454 vs 1.202
Around 2% better performance in GFXBench 4.0 - T-Rex (Frames): 2709 vs 2654
Around 2% better performance in GFXBench 4.0 - T-Rex (Fps): 2709 vs 2654

Specifications (specs)
Unlocked	Unlocked vs Locked
Number of cores	4 vs 2
Number of threads	8 vs 4
Maximum frequency	3.90 GHz vs 3.30 GHz
Maximum core temperature	105 °C vs 100°C
L1 cache	256 KB vs 128 KB
L2 cache	1024 KB vs 512 KB
L3 cache	8192 KB vs 4 MB
Maximum memory size	32 GB vs 16 GB
Benchmarks
PassMark - Single thread mark	1911 vs 1654
PassMark - CPU mark	5840 vs 2719
Geekbench 4 - Single Core	741 vs 672
Geekbench 4 - Multi-Core	2890 vs 1363
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	14.555 vs 6.333
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.613 vs 0.276
CompuBench 1.5 Desktop - Video Composition (Frames/s)	2.454 vs 1.202
GFXBench 4.0 - T-Rex (Frames)	2709 vs 2654
GFXBench 4.0 - T-Rex (Fps)	2709 vs 2654

Compare benchmarks

CPU 1: Intel Core i7-4600U
CPU 2: Intel Core i7-3940XM

PassMark - Single thread mark

CPU 1

CPU 2

1654

1911

PassMark - CPU mark

CPU 1

CPU 2

2719

5840

Geekbench 4 - Single Core

CPU 1

CPU 2

672

741

Geekbench 4 - Multi-Core

CPU 1

CPU 2

1363

2890

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

6.333

14.555

CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)

CPU 1

CPU 2

30.46

16.624

CompuBench 1.5 Desktop - T-Rex (Frames/s)

CPU 1

CPU 2

0.276

0.613

CompuBench 1.5 Desktop - Video Composition (Frames/s)

CPU 1

CPU 2

1.202

2.454

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

10.252

5.598

GFXBench 4.0 - T-Rex (Frames)

CPU 1

CPU 2

2654

2709

GFXBench 4.0 - T-Rex (Fps)

CPU 1

CPU 2

2654

2709

Name	Intel Core i7-4600U	Intel Core i7-3940XM
PassMark - Single thread mark	1654	1911
PassMark - CPU mark	2719	5840
Geekbench 4 - Single Core	672	741
Geekbench 4 - Multi-Core	1363	2890
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	6.333	14.555
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	30.46	16.624
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.276	0.613
CompuBench 1.5 Desktop - Video Composition (Frames/s)	1.202	2.454
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	10.252	5.598
GFXBench 4.0 - Car Chase Offscreen (Frames)	815
GFXBench 4.0 - Manhattan (Frames)	1667
GFXBench 4.0 - T-Rex (Frames)	2654	2709
GFXBench 4.0 - Car Chase Offscreen (Fps)	815
GFXBench 4.0 - Manhattan (Fps)	1667
GFXBench 4.0 - T-Rex (Fps)	2654	2709
3DMark Fire Strike - Physics Score		0

Compare specifications (specs)

	Intel Core i7-4600U	Intel Core i7-3940XM
Essentials
Architecture codename	Haswell	Ivy Bridge
Launch date	1 September 2013	30 September 2012
Launch price (MSRP)	$398	$1,096
Place in performance rating	2131	2137
Processor Number	i7-4600U	i7-3940XM
Series	4th Generation Intel® Core™ i7 Processors	Intel® Core™ X-series Processors
Status	Launched	Launched
Vertical segment	Mobile	Mobile
Price now		$539
Value for money (0-100)		5.08
Performance
64 bit support
Base frequency	2.10 GHz	3.00 GHz
Bus Speed	5 GT/s DMI2	5 GT/s DMI
Die size	181 mm	160 mm
L1 cache	128 KB	256 KB
L2 cache	512 KB	1024 KB
L3 cache	4 MB	8192 KB
Manufacturing process technology	22 nm	22 nm
Maximum core temperature	100°C	105 °C
Maximum frequency	3.30 GHz	3.90 GHz
Number of cores	2	4
Number of threads	4	8
Transistor count	1300 Million	1400 Million
Unlocked
Memory
Max memory channels	2	2
Maximum memory bandwidth	25.6 GB/s	25.6 GB/s
Maximum memory size	16 GB	32 GB
Supported memory types	DDR3L 1333/1600, LPDDR3 1333/1600	DDR3/L/-RS 1333/1600
Graphics
Device ID	0xA16
Graphics base frequency	200 MHz	650 MHz
Graphics max dynamic frequency	1.10 GHz	1.35 GHz
Graphics max frequency	1.1 GHz	1.35 GHz
Intel® Clear Video HD technology
Intel® Flexible Display Interface (Intel® FDI)
Intel® InTru™ 3D technology
Intel® Quick Sync Video
Max video memory	2 GB
Processor graphics	Intel® HD Graphics 4400	Intel® HD Graphics 4000
Graphics interfaces
DisplayPort
eDP
HDMI
Number of displays supported	3	3
VGA
Wireless Display (WiDi) support
CRT
SDVO
Graphics image quality
Max resolution over DisplayPort	3200x2000@60Hz
Max resolution over HDMI 1.4	3200x2000@60Hz
Max resolution over VGA	N / A
Graphics API support
DirectX	11.2/12
OpenGL	4.3
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	40mm x 24mm x 1.5mm	37.5 x 37.5mm (rPGA988B)
Sockets supported	FCBGA1168	FCPGA988
Thermal Design Power (TDP)	15 Watt	55 Watt
Peripherals
Integrated IDE
Integrated LAN
Max number of PCIe lanes	12	16
Max number of SATA 6 Gb/s Ports	4
Number of USB ports	4
PCI Express revision	2.0	3.0
PCI support
PCIe configurations	4x1, 2x4	1x16, 2x8, 1x8 2x4
Total number of SATA ports	4
UART
USB revision	3.0
Security & Reliability
Anti-Theft technology
Execute Disable Bit (EDB)
Intel® Identity Protection technology
Intel® Secure Key technology
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Flexible Display interface (FDI)
General-Purpose Input/Output (GPIO)
HD Audio
Idle States
Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2, Intel® AVX2	Intel® AVX
Intel 64
Intel® Active Management technology (AMT)
Intel® Advanced Vector Extensions (AVX)
Intel® AES New Instructions
Intel® Hyper-Threading technology
Intel® ME Firmware Version	9.5
Intel® Rapid Storage technology (RST)
Intel® Smart Response technology
Intel® Stable Image Platform Program (SIPP)
Intel® TSX-NI
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Smart Connect
Thermal Monitoring
4G WiMAX Wireless
Intel® Demand Based Switching
Intel® Fast Memory Access
Intel® Flex Memory Access
Intel® My WiFi technology
Virtualization
AMD Virtualization (AMD-V™)
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)