Intel Atom Z3775 vs Intel Core i7-940XM

Comparative analysis of Intel Atom Z3775 and Intel Core i7-940XM processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Compatibility, Advanced Technologies, Virtualization, Peripherals, Security & Reliability. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - T-Rex (Fps).

Intel Atom Z3775

Intel Core i7-940XM

Differences

Reasons to consider the Intel Atom Z3775

A newer manufacturing process allows for a more powerful, yet cooler running processor: 22 nm vs 45 nm
2.1x better performance in Geekbench 4 - Single Core: 1072 vs 516
Around 75% better performance in Geekbench 4 - Multi-Core: 2997 vs 1709

Specifications (specs)
Manufacturing process technology	22 nm vs 45 nm
Benchmarks
Geekbench 4 - Single Core	1072 vs 516
Geekbench 4 - Multi-Core	2997 vs 1709

Reasons to consider the Intel Core i7-940XM

4 more threads: 8 vs 4
Around 39% higher clock speed: 3.33 GHz vs 2.39 GHz
2x more maximum memory size: 8 GB vs 4 GB
2.3x better performance in PassMark - Single thread mark: 1170 vs 505
3.2x better performance in PassMark - CPU mark: 2274 vs 704

Specifications (specs)
Number of threads	8 vs 4
Maximum frequency	3.33 GHz vs 2.39 GHz
Maximum memory size	8 GB vs 4 GB
Benchmarks
PassMark - Single thread mark	1170 vs 505
PassMark - CPU mark	2274 vs 704

Compare benchmarks

CPU 1: Intel Atom Z3775
CPU 2: Intel Core i7-940XM

PassMark - Single thread mark

CPU 1

CPU 2

505

1170

PassMark - CPU mark

CPU 1

CPU 2

704

2274

Geekbench 4 - Single Core

CPU 1

CPU 2

1072

516

Geekbench 4 - Multi-Core

CPU 1

CPU 2

2997

1709

Name	Intel Atom Z3775	Intel Core i7-940XM
PassMark - Single thread mark	505	1170
PassMark - CPU mark	704	2274
Geekbench 4 - Single Core	1072	516
Geekbench 4 - Multi-Core	2997	1709
GFXBench 4.0 - T-Rex (Frames)	1295
GFXBench 4.0 - T-Rex (Fps)	1295

Compare specifications (specs)

	Intel Atom Z3775	Intel Core i7-940XM
Essentials
Architecture codename	Bay Trail	Clarksfield
Launch date	Q1'14	1 June 2010
Place in performance rating	2373	2366
Processor Number	Z3775	i7-940XM
Series	Intel® Atom™ Processor Z Series	Legacy Intel® Core™ Processors
Status	Launched	Discontinued
Vertical segment	Mobile	Mobile
Launch price (MSRP)		$1,096
Performance
64 bit support
Base frequency	1.46 GHz	2.13 GHz
Manufacturing process technology	22 nm	45 nm
Maximum frequency	2.39 GHz	3.33 GHz
Number of cores	4	4
Number of threads	4	8
Bus Speed		2.5 GT/s DMI
Die size		296 mm2
Front-side bus (FSB)		2500 MHz
L1 cache		256 KB
L2 cache		1024 KB
L3 cache		8196 KB
Maximum core temperature		100°C
Transistor count		774 million
Memory
Max memory channels	2	2
Maximum memory bandwidth	17.1 GB/s	21 GB/s
Maximum memory size	4 GB	8 GB
Supported memory types	LPDDR3 1066	DDR3 1066/1333
Graphics
Graphics base frequency	311 MHz
Graphics max frequency	778 MHz
Processor graphics	Intel HD Graphics
Compatibility
Low Halogen Options Available
Package Size	17mm x 17mm	37.5mm x 37.5mm
Scenario Design Power (SDP)	2 W
Sockets supported	UTFCBGA1380	PGA988
Max number of CPUs in a configuration		1
Thermal Design Power (TDP)		55 Watt
Advanced Technologies
Intel 64
Intel® AES New Instructions
Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions		Intel® SSE4.2
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Physical Address Extensions (PAE)		36-bit
Thermal Monitoring
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)
Peripherals
Max number of PCIe lanes		16
PCI Express revision		2
PCIe configurations		1x16, 2x8
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)