Intel Atom Z3775D vs Intel Core 2 Extreme X7900

Comparative analysis of Intel Atom Z3775D and Intel Core 2 Extreme X7900 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Compatibility, Advanced Technologies, Virtualization, Security & Reliability. 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 - Bitcoin Mining (mHash/s), CompuBench 1.5 Desktop - Video Composition (Frames/s).

Intel Atom Z3775D

Intel Core 2 Extreme X7900

Differences

Reasons to consider the Intel Atom Z3775D

2 more cores, run more applications at once: 4 vs 2
2 more threads: 4 vs 2
A newer manufacturing process allows for a more powerful, yet cooler running processor: 22 nm vs 65 nm

Number of cores	4 vs 2
Number of threads	4 vs 2
Manufacturing process technology	22 nm vs 65 nm

Reasons to consider the Intel Core 2 Extreme X7900

Around 16% higher clock speed: 2.8 GHz vs 2.41 GHz
Around 68% better performance in PassMark - Single thread mark: 1085 vs 646
Around 39% better performance in PassMark - CPU mark: 1104 vs 794

Specifications (specs)
Maximum frequency	2.8 GHz vs 2.41 GHz
Benchmarks
PassMark - Single thread mark	1085 vs 646
PassMark - CPU mark	1104 vs 794

Compare benchmarks

CPU 1: Intel Atom Z3775D
CPU 2: Intel Core 2 Extreme X7900

PassMark - Single thread mark

CPU 1

CPU 2

646

1085

PassMark - CPU mark

CPU 1

CPU 2

794

1104

Name	Intel Atom Z3775D	Intel Core 2 Extreme X7900
PassMark - Single thread mark	646	1085
PassMark - CPU mark	794	1104
Geekbench 4 - Single Core		1485
Geekbench 4 - Multi-Core		2396
CompuBench 1.5 Desktop - Face Detection (mPixels/s)		0.308
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)		20.342
CompuBench 1.5 Desktop - T-Rex (Frames/s)		0.082
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)		2.227
CompuBench 1.5 Desktop - Video Composition (Frames/s)		0.436

Compare specifications (specs)

	Intel Atom Z3775D	Intel Core 2 Extreme X7900
Essentials
Architecture codename	Bay Trail	Merom
Launch date	Q1'14	1 September 2007
Place in performance rating	2756	2746
Processor Number	Z3775D	X7900
Series	Intel® Atom™ Processor Z Series	Legacy Intel® Core™ Processors
Status	Launched	Discontinued
Vertical segment	Mobile	Mobile
Launch price (MSRP)		$851
Performance
64 bit support
Base frequency	1.49 GHz	2.80 GHz
Manufacturing process technology	22 nm	65 nm
Maximum frequency	2.41 GHz	2.8 GHz
Number of cores	4	2
Number of threads	4	2
Bus Speed		800 MHz FSB
Die size		143 mm2
Front-side bus (FSB)		800 MHz
L1 cache		128 KB
L2 cache		4 MB
Maximum core temperature		100°C
Transistor count		291 million
VID voltage range		1.100V-1.375V
Memory
Max memory channels	1
Maximum memory bandwidth	10.6 GB/s
Maximum memory size	2 GB
Supported memory types	DDR3L-RS 1333	DDR1
Graphics
Graphics base frequency	311 MHz
Graphics max frequency	792 MHz
Processor graphics	Intel HD Graphics
Compatibility
Low Halogen Options Available
Package Size	17mm x 17mm	35mm x 35mm
Scenario Design Power (SDP)	2.2 W
Sockets supported	UTFCBGA1380	PPGA478
Max number of CPUs in a configuration		1
Thermal Design Power (TDP)		44 Watt
Advanced Technologies
Intel 64
Intel® AES New Instructions
Enhanced Intel SpeedStep® technology
FSB parity
Idle States
Intel® Active Management technology (AMT)
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Virtualization
Intel® Virtualization Technology (VT-x)
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)