Intel Atom Z540 vs Intel Pentium 4-M 2.50

Comparative analysis of Intel Atom Z540 and Intel Pentium 4-M 2.50 processors for all known characteristics in the following categories: Essentials, Performance, Compatibility, Security & Reliability, Advanced Technologies, Virtualization, Memory. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark.

Intel Atom Z540

Intel Pentium 4-M 2.50

Differences

Reasons to consider the Intel Atom Z540

CPU is newer: launch date 5 year(s) 0 month(s) later
A newer manufacturing process allows for a more powerful, yet cooler running processor: 45 nm vs 130 nm
8x more L1 cache, more data can be stored in the L1 cache for quick access later
17.5x lower typical power consumption: 2.4 Watt vs 35 Watt
Around 36% better performance in PassMark - CPU mark: 348 vs 256

Specifications (specs)
Launch date	April 2008 vs April 2003
Manufacturing process technology	45 nm vs 130 nm
L1 cache	64 KB (per core) vs 8 KB
Thermal Design Power (TDP)	2.4 Watt vs 35 Watt
Benchmarks
PassMark - CPU mark	348 vs 256

Reasons to consider the Intel Pentium 4-M 2.50

Around 34% higher clock speed: 2.5 GHz vs 1.86 GHz
Around 11% higher maximum core temperature: 100°C vs 90°C

Maximum frequency	2.5 GHz vs 1.86 GHz
Maximum core temperature	100°C vs 90°C

Compare benchmarks

CPU 1: Intel Atom Z540
CPU 2: Intel Pentium 4-M 2.50

PassMark - CPU mark

CPU 1

CPU 2

348

256

Name	Intel Atom Z540	Intel Pentium 4-M 2.50
PassMark - Single thread mark	0	0
PassMark - CPU mark	348	256

Compare specifications (specs)

	Intel Atom Z540	Intel Pentium 4-M 2.50
Essentials
Architecture codename	Silverthorne	Northwood
Launch date	April 2008	April 2003
Place in performance rating	3339	3347
Processor Number	Z540
Series	Legacy Intel Atom® Processors	Legacy Intel® Pentium® Processor
Status	Discontinued	Discontinued
Vertical segment	Mobile	Mobile
Performance
Base frequency	1.86 GHz	2.50 GHz
Bus Speed	533 MHz FSB	400 MHz FSB
Die size	26 mm2	131 mm2
L1 cache	64 KB (per core)	8 KB
L2 cache	512 KB (per core)	512 KB
Manufacturing process technology	45 nm	130 nm
Maximum core temperature	90°C	100°C
Maximum frequency	1.86 GHz	2.5 GHz
Number of cores	1	1
Transistor count	47 million	55 million
VID voltage range	0.75 -1.1V	1.3V
64 bit support
Maximum case temperature (TCase)		100 °C
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	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	35 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)
Memory
Supported memory types		DDR1, DDR2