Intel Atom E645C vs Intel Atom E665C

Comparative analysis of Intel Atom E645C and Intel Atom E665C processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Compatibility, Peripherals, Advanced Technologies, Virtualization.

Intel Atom E645C

Intel Atom E665C

Differences

Reasons to consider the Intel Atom E665C

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

Maximum frequency	1.3 GHz vs 1 GHz

Compare specifications (specs)

	Intel Atom E645C	Intel Atom E665C
Essentials
Architecture codename	Stellarton	Stellarton
Launch date	November 2010	November 2010
Place in performance rating	not rated	not rated
Processor Number	E645C	E665C
Series	Legacy Intel Atom® Processors	Legacy Intel Atom® Processors
Status	Discontinued	Discontinued
Vertical segment	Embedded	Embedded
Performance
Base frequency	1.00 GHz	1.30 GHz
Bus Speed	2.5 GT/s PCIE	2.5 GT/s 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 frequency	1 GHz	1.3 GHz
Number of cores	1	1
Number of threads	2	2
Transistor count	47 million	47 million
Memory
Max memory channels	1	1
Maximum memory size	2.93 GB	2.93 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	37.5mm x 37.5mm	37.5mm x 37.5mm
Sockets supported	FCBGA1466	FCBGA1466
Thermal Design Power (TDP)	7 Watt	7 Watt
Peripherals
Max number of PCIe lanes	2	2
PCIe configurations	x1, root complex only	x1, root complex only
Advanced Technologies
Enhanced Intel SpeedStep® technology
Intel® Hyper-Threading technology
Intel® Turbo Boost technology
Virtualization
Intel® Virtualization Technology (VT-x)