Intel Core i7-3555LE vs Intel Core i7-940XM

Comparative analysis of Intel Core i7-3555LE and Intel Core i7-940XM processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Graphics interfaces, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, 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), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps), Geekbench 4 - Single Core, Geekbench 4 - Multi-Core.

Intel Core i7-3555LE

Intel Core i7-940XM

Differences

Reasons to consider the Intel Core i7-3555LE

CPU is newer: launch date 2 year(s) 0 month(s) later
Around 5% higher maximum core temperature: 105°C vs 100°C
A newer manufacturing process allows for a more powerful, yet cooler running processor: 22 nm vs 45 nm
2x more maximum memory size: 16 GB vs 8 GB
2.2x lower typical power consumption: 25 Watt vs 55 Watt
Around 17% better performance in PassMark - Single thread mark: 1336 vs 1139
Around 1% better performance in PassMark - CPU mark: 2238 vs 2209

Specifications (specs)
Launch date	June 2012 vs 1 June 2010
Maximum core temperature	105°C vs 100°C
Manufacturing process technology	22 nm vs 45 nm
Maximum memory size	16 GB vs 8 GB
Thermal Design Power (TDP)	25 Watt vs 55 Watt
Benchmarks
PassMark - Single thread mark	1336 vs 1139
PassMark - CPU mark	2238 vs 2209

Reasons to consider the Intel Core i7-940XM

2 more cores, run more applications at once: 4 vs 2
4 more threads: 8 vs 4
Around 4% higher clock speed: 3.33 GHz vs 3.20 GHz
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

Number of cores	4 vs 2
Number of threads	8 vs 4
Maximum frequency	3.33 GHz vs 3.20 GHz
L1 cache	256 KB vs 64 KB (per core)
L2 cache	1024 KB vs 256 KB (per core)
L3 cache	8196 KB vs 4096 KB (shared)

Compare benchmarks

CPU 1: Intel Core i7-3555LE
CPU 2: Intel Core i7-940XM

PassMark - Single thread mark

CPU 1

CPU 2

1336

1139

PassMark - CPU mark

CPU 1

CPU 2

2238

2209

Name	Intel Core i7-3555LE	Intel Core i7-940XM
PassMark - Single thread mark	1336	1139
PassMark - CPU mark	2238	2209
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	3.857
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	5.584
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.274
CompuBench 1.5 Desktop - Video Composition (Frames/s)	1.253
GFXBench 4.0 - T-Rex (Frames)	2328
GFXBench 4.0 - T-Rex (Fps)	2328
Geekbench 4 - Single Core		516
Geekbench 4 - Multi-Core		1709

Compare specifications (specs)

	Intel Core i7-3555LE	Intel Core i7-940XM
Essentials
Architecture codename	Ivy Bridge	Clarksfield
Launch date	June 2012	1 June 2010
Place in performance rating	2388	2391
Processor Number	i7-3555LE	i7-940XM
Series	Legacy Intel® Core™ Processors	Legacy Intel® Core™ Processors
Status	Launched	Discontinued
Vertical segment	Embedded	Mobile
Launch price (MSRP)		$1,096
Performance
64 bit support
Base frequency	2.50 GHz	2.13 GHz
Bus Speed	5 GT/s DMI	2.5 GT/s DMI
Die size	118 mm	296 mm2
L1 cache	64 KB (per core)	256 KB
L2 cache	256 KB (per core)	1024 KB
L3 cache	4096 KB (shared)	8196 KB
Manufacturing process technology	22 nm	45 nm
Maximum core temperature	105°C	100°C
Maximum frequency	3.20 GHz	3.33 GHz
Number of cores	2	4
Number of threads	4	8
Front-side bus (FSB)		2500 MHz
Transistor count		774 million
Memory
ECC memory support
Max memory channels	2	2
Maximum memory bandwidth	25.6 GB/s	21 GB/s
Maximum memory size	16 GB	8 GB
Supported memory types	DDR3/DDR3L 1333/1600	DDR3 1066/1333
Graphics
Graphics base frequency	550 MHz
Graphics max dynamic frequency	1.00 GHz
Graphics max frequency	1 GHz
Intel® Clear Video HD technology
Intel® Clear Video technology
Intel® Flexible Display Interface (Intel® FDI)
Intel® InTru™ 3D technology
Intel® Quick Sync Video
Processor graphics	Intel® HD Graphics 4000
Graphics interfaces
CRT
DisplayPort
eDP
HDMI
Number of displays supported	3
SDVO
Wireless Display (WiDi) support
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	31.0mm x 24.0mm	37.5mm x 37.5mm
Sockets supported	FCBGA1023	PGA988
Thermal Design Power (TDP)	25 Watt	55 Watt
Peripherals
Max number of PCIe lanes	16	16
PCI Express revision	3.0	2
PCIe configurations	1x16, 2x8, 1x8 2x4	1x16, 2x8
Security & Reliability
Anti-Theft technology
Execute Disable Bit (EDB)
Intel® Identity Protection technology
Intel® Trusted Execution technology (TXT)
Advanced Technologies
4G WiMAX Wireless
Enhanced Intel SpeedStep® technology
Flexible Display interface (FDI)
Idle States
Instruction set extensions	Intel® AVX	Intel® SSE4.2
Intel 64
Intel® Advanced Vector Extensions (AVX)
Intel® AES New Instructions
Intel® Demand Based Switching
Intel® Fast Memory Access
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® My WiFi technology
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Thermal Monitoring
Physical Address Extensions (PAE)		36-bit
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)