i7-660LM vs i7-640M

Primary details

Comparing Core i7-640M and Core i7-660LM processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2277	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i7	Intel Core i7
Power efficiency	3.54	no data
Architecture codename	Arrandale (2010−2011)	Arrandale (2010−2011)
Release date	1 September 2010 (14 years ago)	13 September 2010 (14 years ago)
Launch price (MSRP)	$346	$346

Detailed specifications

Core i7-640M and Core i7-660LM basic parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters indirectly say of CPU speed, though for more precise assessment you have to consider their test results.

Physical cores	2 (Dual-core)	2 (Dual-core)
Threads	4	4
Base clock speed	2.8 GHz	2.26 GHz
Boost clock speed	3.46 GHz	3.06 GHz
Bus type	DMI 1.0	DMI 1.0
Bus rate	1 × 2.5 GT/s	1 × 2.5 GT/s
Multiplier	21	17
L1 cache	64K (per core)	128 KB
L2 cache	256K (per core)	512 KB
L3 cache	4 MB (shared)	4 MB
Chip lithography	32 nm	32 nm
Die size	81+114 mm2	81+177 mm2
Maximum core temperature	105 °C	105 °C
Number of transistors	384 million	382+177 Million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i7-640M and Core i7-660LM compatibility with other computer components: motherboard (look for socket type), power supply unit (look for power consumption) etc. Useful when planning a future computer configuration or upgrading an existing one. Note that power consumption of some processors can well exceed their nominal TDP, even without overclocking. Some can even double their declared thermals given that the motherboard allows to tune the CPU power parameters.

Number of CPUs in a configuration	1 (Uniprocessor)	1 (Uniprocessor)
Socket	BGA1288, PGA988	BGA1288
Power consumption (TDP)	35 Watt	25 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-640M and Core i7-660LM. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	Intel® SSE4.1, Intel® SSE4.2
AES-NI	+	+
FMA	+	+
vPro	+	+
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	+	+
Hyper-Threading Technology	+	+
Idle States	+	+
Thermal Monitoring	+	+
Flex Memory Access	+	+
PAE	36 Bit	36 Bit
FDI	+	+
Fast Memory Access	+	+

Security technologies

Core i7-640M and Core i7-660LM technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	+
EDB	+	+

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-640M and Core i7-660LM are enumerated here.

VT-d	+	+
VT-x	+	+
EPT	+	+

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-640M and Core i7-660LM. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR3-800, DDR3-1066
Maximum memory size	8 GB	8 GB
Max memory channels	2	2
Maximum memory bandwidth	17.051 GB/s	17.051 GB/s

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel HD Graphics for Previous Generation Intel Processors	Intel HD Graphics for Previous Generation Intel Processors
Clear Video	+	+
Clear Video HD	+	+
Graphics max frequency	766 MHz	566 MHz

Graphics interfaces

Available interfaces and connections of Core i7-640M and Core i7-660LM integrated GPUs.

Number of displays supported

2

2

Peripherals

Specifications and connection of peripherals supported by Core i7-640M and Core i7-660LM.

PCIe version	2.0	2.0
PCI Express lanes	16	16

Pros & cons summary

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Power consumption (TDP)

35 Watt

25 Watt

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Should you still have questions on choice between Core i7-640M and Core i7-660LM, ask them in Comments section, and we shall answer.

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