Intel Atom Z550 vs Intel Atom Z540

Comparative analysis of Intel Atom Z550 and Intel Atom Z540 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 Z550

Intel Atom Z540

Differences

Reasons to consider the Intel Atom Z550

CPU is newer: launch date 1 year(s) 0 month(s) later
Around 8% higher clock speed: 2 GHz vs 1.86 GHz
Around 9% better performance in PassMark - CPU mark: 381 vs 348

Specifications (specs)
Launch date	April 2009 vs April 2008
Maximum frequency	2 GHz vs 1.86 GHz
Benchmarks
PassMark - CPU mark	381 vs 348

Compare benchmarks

CPU 1: Intel Atom Z550
CPU 2: Intel Atom Z540

PassMark - CPU mark

CPU 1

CPU 2

381

348

Name	Intel Atom Z550	Intel Atom Z540
PassMark - Single thread mark	0	0
PassMark - CPU mark	381	348

Compare specifications (specs)

	Intel Atom Z550	Intel Atom Z540
Essentials
Architecture codename	Silverthorne	Silverthorne
Launch date	April 2009	April 2008
Place in performance rating	3337	3339
Processor Number	Z550	Z540
Series	Legacy Intel Atom® Processors	Legacy Intel Atom® Processors
Status	Discontinued	Discontinued
Vertical segment	Mobile	Mobile
Performance
Base frequency	2.00 GHz	1.86 GHz
Bus Speed	533 MHz FSB	533 MHz FSB
Die size	26 mm2	26 mm2
L1 cache	64 KB (per core)	64 KB (per core)
L2 cache	512 KB (per core)	512 KB (per core)
Manufacturing process technology	45 nm	45 nm
Maximum core temperature	90°C	90°C
Maximum frequency	2 GHz	1.86 GHz
Number of cores	1	1
Transistor count	47 million	47 million
VID voltage range		0.75 -1.1V
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	13mm x 14mm	13mm x 14mm
Sockets supported	PBGA441	PBGA441
Thermal Design Power (TDP)	2.4 Watt	2.4 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
FSB parity
Idle States
Intel 64
Intel® Demand Based Switching
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Thermal Monitoring
Instruction set extensions		Intel® SSE2, Intel® SSE3, Intel® SSSE3
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)