Intel Atom Z520 vs Intel Atom N270

Comparative analysis of Intel Atom Z520 and Intel Atom N270 processors for all known characteristics in the following categories: Essentials, Performance, Compatibility, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark.

Intel Atom Z520

Intel Atom N270

Differences

Reasons to consider the Intel Atom Z520

CPU is newer: launch date 1 month(s) later
Around 14% more L1 cache; more data can be stored in the L1 cache for quick access later
Around 50% lower typical power consumption: 2 Watt vs 2.5 Watt

Launch date	April 2008 vs 1 March 2008
L1 cache	64 KB (per core) vs 56 KB
Thermal Design Power (TDP)	2 Watt vs 2.5 Watt

Reasons to consider the Intel Atom N270

Around 20% higher clock speed: 1.6 GHz vs 1.33 GHz
Around 15% better performance in PassMark - Single thread mark: 174 vs 151
Around 11% better performance in PassMark - CPU mark: 136 vs 122

Specifications (specs)
Maximum frequency	1.6 GHz vs 1.33 GHz
Benchmarks
PassMark - Single thread mark	174 vs 151
PassMark - CPU mark	136 vs 122

Compare benchmarks

CPU 1: Intel Atom Z520
CPU 2: Intel Atom N270

PassMark - Single thread mark

CPU 1

CPU 2

151

174

PassMark - CPU mark

CPU 1

CPU 2

122

136

Name	Intel Atom Z520	Intel Atom N270
PassMark - Single thread mark	151	174
PassMark - CPU mark	122	136

Compare specifications (specs)

	Intel Atom Z520	Intel Atom N270
Essentials
Architecture codename	Silverthorne	Diamondville
Launch date	April 2008	1 March 2008
Place in performance rating	3306	3302
Processor Number	Z520	N270
Series	Legacy Intel Atom® Processors	Legacy Intel Atom® Processors
Status	Discontinued	Discontinued
Vertical segment	Mobile	Mobile
Launch price (MSRP)		$44
Performance
Base frequency	1.33 GHz	1.60 GHz
Bus Speed	533 MHz FSB	533 MHz FSB
Die size	26 mm2	26 mm2
L1 cache	64 KB (per core)	56 KB
L2 cache	512 KB (per core)	512 KB
Manufacturing process technology	45 nm	45 nm
Maximum core temperature	90°C	90°C
Maximum frequency	1.33 GHz	1.6 GHz
Number of cores	1	1
Transistor count	47 million	47 million
VID voltage range	0.75-1.1V	0.9V-1.1625V
64 bit support
Front-side bus (FSB)		533 MHz
Number of threads		2
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	13mm x 14mm	22mm x 22mm
Scenario Design Power (SDP)	0.96 W
Sockets supported	PBGA441	PBGA437
Thermal Design Power (TDP)	2 Watt	2.5 Watt
Security & Reliability
Execute Disable Bit (EDB)
Intel® Trusted Execution technology (TXT)
Advanced Technologies
Enhanced Intel SpeedStep® technology
FSB parity
Idle States
Instruction set extensions	Intel® SSE2, Intel® SSE3, Intel® SSSE3	Intel® SSE, Intel® SSE2, Intel® SSE3, Intel® SSSE3
Intel 64
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Thermal Monitoring
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)