Intel Atom E620T vs Intel Atom E640

Comparative analysis of Intel Atom E620T and Intel Atom E640 processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization.

Intel Atom E620T

Intel Atom E640

Differences

Reasons to consider the Intel Atom E620T

Around 22% higher maximum core temperature: 110°C vs 90°C
Around 33% lower typical power consumption: 3.3 Watt vs 3.6 Watt

Maximum core temperature	110°C vs 90°C
Thermal Design Power (TDP)	3.3 Watt vs 3.6 Watt

Compare specifications (specs)

	Intel Atom E620T	Intel Atom E640
Essentials
Architecture codename	Tunnel Creek	Tunnel Creek
Launch date	September 2010	September 2010
Place in performance rating	not rated	not rated
Processor Number	E620T	E640
Series	Legacy Intel Atom® Processors	Legacy Intel Atom® Processors
Status	Launched	Launched
Vertical segment	Embedded	Embedded
Performance
Base frequency	600 MHz	1.00 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	110°C	90°C
Maximum frequency	0 GHz	1 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	320 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)	3.3 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)