Intel Atom N455 vs Intel Atom Z520

Comparative analysis of Intel Atom N455 and Intel Atom Z520 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Compatibility, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core.

Intel Atom N455

Intel Atom Z520

Differences

Reasons to consider the Intel Atom N455

CPU is newer: launch date 2 year(s) 0 month(s) later
Around 25% higher clock speed: 1.66 GHz vs 1.33 GHz
Around 11% higher maximum core temperature: 100°C vs 90°C
Around 76% better performance in PassMark - Single thread mark: 266 vs 151
Around 58% better performance in PassMark - CPU mark: 193 vs 122

Specifications (specs)
Launch date	1 May 2010 vs April 2008
Maximum frequency	1.66 GHz vs 1.33 GHz
Maximum core temperature	100°C vs 90°C
Benchmarks
PassMark - Single thread mark	266 vs 151
PassMark - CPU mark	193 vs 122

Reasons to consider the Intel Atom Z520

3.5x lower typical power consumption: 2 Watt vs 6.5 Watt

Thermal Design Power (TDP)	2 Watt vs 6.5 Watt

Compare benchmarks

CPU 1: Intel Atom N455
CPU 2: Intel Atom Z520

PassMark - Single thread mark

CPU 1

CPU 2

266

151

PassMark - CPU mark

CPU 1

CPU 2

193

122

Name	Intel Atom N455	Intel Atom Z520
PassMark - Single thread mark	266	151
PassMark - CPU mark	193	122
Geekbench 4 - Single Core	62
Geekbench 4 - Multi-Core	94

Compare specifications (specs)

	Intel Atom N455	Intel Atom Z520
Essentials
Architecture codename	Pineview	Silverthorne
Launch date	1 May 2010	April 2008
Launch price (MSRP)	$64
Place in performance rating	3301	3306
Processor Number	N455	Z520
Series	Legacy Intel Atom® Processors	Legacy Intel Atom® Processors
Status	Discontinued	Discontinued
Vertical segment	Mobile	Mobile
Performance
64 bit support
Base frequency	1.66 GHz	1.33 GHz
Bus Speed	2.5 GT/s DMI	533 MHz FSB
Die size	66 mm2	26 mm2
Front-side bus (FSB)	533 MHz
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	512 KB	512 KB (per core)
Manufacturing process technology	45 nm	45 nm
Maximum core temperature	100°C	90°C
Maximum frequency	1.66 GHz	1.33 GHz
Number of cores	1	1
Number of threads	2
Transistor count	123 million	47 million
VID voltage range		0.75-1.1V
Memory
Max memory channels	1
Maximum memory size	2 GB
Supported memory types	DDR2/3
Graphics
Graphics base frequency	200 MHz
Processor graphics	Integrated
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	22mm x 22mm	13mm x 14mm
Sockets supported	FCBGA559	PBGA441
Thermal Design Power (TDP)	6.5 Watt	2 Watt
Scenario Design Power (SDP)		0.96 W
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
Instruction set extensions	Intel® SSE2, Intel® SSE3, Intel® SSSE3	Intel® SSE2, Intel® SSE3, Intel® SSSE3
Intel 64
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Thermal Monitoring
FSB parity
Idle States
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)