Intel Atom E640 vs Intel Atom E660

Comparative analysis of Intel Atom E640 and Intel Atom E660 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 E640

Intel Atom E660

Differences

Reasons to consider the Intel Atom E660

Around 30% higher clock speed: 1.3 GHz vs 1 GHz

Maximum frequency	1.3 GHz vs 1 GHz

Compare benchmarks

CPU 1: Intel Atom E640
CPU 2: Intel Atom E660

Name	Intel Atom E640	Intel Atom E660
PassMark - Single thread mark		0
PassMark - CPU mark		271

Compare specifications (specs)

	Intel Atom E640	Intel Atom E660
Essentials
Architecture codename	Tunnel Creek	Tunnel Creek
Launch date	September 2010	September 2010
Place in performance rating	not rated	3334
Processor Number	E640	E660
Series	Legacy Intel Atom® Processors	Legacy Intel Atom® Processors
Status	Launched	Launched
Vertical segment	Embedded	Embedded
Launch price (MSRP)		$54
Price now		$54
Value for money (0-100)		1.48
Performance
Base frequency	1.00 GHz	1.30 GHz
Bus Speed	2500 MHz PCIE	2500 MHz PCIE
Die size	26 mm	26 mm
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 GHz	1.3 GHz
Number of cores	1	1
Number of threads	2	2
Transistor count	47 million	47 million
VID voltage range	VCC (0.75 - 0.9V), VNN (0.75 - 1.1V)	VCC (0.75 - 0.9V), VNN (0.75 - 1.1V)
Memory
Max memory channels	1	1
Maximum memory size	2 GB	2 GB
Supported memory types	DDR2 800	DDR2 800
Graphics
Graphics base frequency	320 MHz	400 MHz
Processor graphics	Integrated	Integrated
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	22mmx22mm	22mmx22mm
Sockets supported	FCBGA676	FCBGA676
Thermal Design Power (TDP)	3.6 Watt	3.6 Watt
Peripherals
Max number of PCIe lanes	4	4
PCI Express revision	1.0a	1.0a
PCIe configurations	x1, root complex only	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)