Intel Atom Z540 vs Intel Celeron M 540

Comparative analysis of Intel Atom Z540 and Intel Celeron M 540 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 Z540

Intel Celeron M 540

Differences

Reasons to consider the Intel Atom Z540

CPU is newer: launch date 6 month(s) later
A newer manufacturing process allows for a more powerful, yet cooler running processor: 45 nm vs 65 nm
15x lower typical power consumption: 2.4 Watt vs 30 Watt

Launch date	April 2008 vs 1 October 2007
Manufacturing process technology	45 nm vs 65 nm
Thermal Design Power (TDP)	2.4 Watt vs 30 Watt

Reasons to consider the Intel Celeron M 540

Around 11% higher maximum core temperature: 100°C vs 90°C
2x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 56% better performance in PassMark - CPU mark: 542 vs 348

Specifications (specs)
Maximum core temperature	100°C vs 90°C
L2 cache	1 MB vs 512 KB (per core)
Benchmarks
PassMark - CPU mark	542 vs 348

Compare benchmarks

CPU 1: Intel Atom Z540
CPU 2: Intel Celeron M 540

PassMark - CPU mark

CPU 1

CPU 2

348

542

Name	Intel Atom Z540	Intel Celeron M 540
PassMark - Single thread mark	0	0
PassMark - CPU mark	348	542

Compare specifications (specs)

	Intel Atom Z540	Intel Celeron M 540
Essentials
Architecture codename	Silverthorne	Merom
Launch date	April 2008	1 October 2007
Place in performance rating	3345	3346
Processor Number	Z540	540
Series	Legacy Intel Atom® Processors	Legacy Intel® Celeron® Processor
Status	Discontinued	Discontinued
Vertical segment	Mobile	Mobile
Performance
Base frequency	1.86 GHz	1.86 GHz
Bus Speed	533 MHz FSB	533 MHz FSB
Die size	26 mm2	143 mm2
L1 cache	64 KB (per core)
L2 cache	512 KB (per core)	1 MB
Manufacturing process technology	45 nm	65 nm
Maximum core temperature	90°C	100°C
Maximum frequency	1.86 GHz	1.86 GHz
Number of cores	1	1
Transistor count	47 million	291 million
VID voltage range	0.75 -1.1V	0.95V-1.30V
64 bit support
Front-side bus (FSB)		533 MHz
Number of threads		1
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1
Package Size	13mm x 14mm	35mm x 35mm
Scenario Design Power (SDP)	0.96 W
Sockets supported	PBGA441	PPGA478
Thermal Design Power (TDP)	2.4 Watt	30 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 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)