Intel Atom E660 vs Intel Atom Z550

Comparative analysis of Intel Atom E660 and Intel Atom Z550 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark.

Intel Atom E660

Intel Atom Z550

Differences

Reasons to consider the Intel Atom E660

CPU is newer: launch date 1 year(s) 5 month(s) later

Launch date	September 2010 vs April 2009

Reasons to consider the Intel Atom Z550

Around 54% higher clock speed: 2 GHz vs 1.3 GHz
2x lower typical power consumption: 2.4 Watt vs 3.6 Watt
Around 41% better performance in PassMark - CPU mark: 381 vs 271

Specifications (specs)
Maximum frequency	2 GHz vs 1.3 GHz
Thermal Design Power (TDP)	2.4 Watt vs 3.6 Watt
Benchmarks
PassMark - CPU mark	381 vs 271

Compare benchmarks

CPU 1: Intel Atom E660
CPU 2: Intel Atom Z550

PassMark - CPU mark

CPU 1

CPU 2

271

381

Name	Intel Atom E660	Intel Atom Z550
PassMark - Single thread mark	0	0
PassMark - CPU mark	271	381

Compare specifications (specs)

	Intel Atom E660	Intel Atom Z550
Essentials
Architecture codename	Tunnel Creek	Silverthorne
Launch date	September 2010	April 2009
Launch price (MSRP)	$54
Place in performance rating	3334	3337
Price now	$54
Processor Number	E660	Z550
Series	Legacy Intel Atom® Processors	Legacy Intel Atom® Processors
Status	Launched	Discontinued
Value for money (0-100)	1.48
Vertical segment	Embedded	Mobile
Performance
Base frequency	1.30 GHz	2.00 GHz
Bus Speed	2500 MHz PCIE	533 MHz FSB
Die size	26 mm	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	1.3 GHz	2 GHz
Number of cores	1	1
Number of threads	2
Transistor count	47 million	47 million
VID voltage range	VCC (0.75 - 0.9V), VNN (0.75 - 1.1V)
Memory
Max memory channels	1
Maximum memory size	2 GB
Supported memory types	DDR2 800
Graphics
Graphics base frequency	400 MHz
Processor graphics	Integrated
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	22mmx22mm	13mm x 14mm
Sockets supported	FCBGA676	PBGA441
Thermal Design Power (TDP)	3.6 Watt	2.4 Watt
Peripherals
Max number of PCIe lanes	4
PCI Express revision	1.0a
PCIe configurations	x1, root complex only
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
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)