Pentium D 955 vs i7-640M

Primary details

Comparing Core i7-640M and Pentium D 955 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2265	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Desktop processor
Series	Intel Core i7	no data
Power efficiency	3.52	no data
Architecture codename	Arrandale (2010−2011)	Presler (2005−2007)
Release date	1 September 2010 (14 years ago)	January 2006 (18 years ago)
Launch price (MSRP)	$346	no data

Detailed specifications

Core i7-640M and Pentium D 955 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	no data
Base clock speed	2.8 GHz	no data
Boost clock speed	3.46 GHz	3.46 GHz
Bus type	DMI 1.0	no data
Bus rate	1 × 2.5 GT/s	no data
Multiplier	21	no data
L1 cache	64K (per core)	28 KB
L2 cache	256K (per core)	4096 KB
L3 cache	4 MB (shared)	0 KB
Chip lithography	32 nm	65 nm
Die size	81+114 mm2	140 mm2
Maximum core temperature	105 °C	no data
Number of transistors	384 million	376 million
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Core i7-640M and Pentium D 955 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)	2
Socket	BGA1288,PGA988	775
Power consumption (TDP)	35 Watt	130 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-640M and Pentium D 955. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.1, Intel® SSE4.2	no data
AES-NI	+	-
FMA	+	-
vPro	+	no data
Enhanced SpeedStep (EIST)	+	+
Turbo Boost Technology	+	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	-
Flex Memory Access	+	no data
PAE	36 Bit	no data
FDI	+	no data
Fast Memory Access	+	no data

Security technologies

Core i7-640M and Pentium D 955 technologies aimed at improving security, for example, by protecting against hacks.

TXT	+	no data
EDB	+	no data

Virtualization technologies

Virtual machine speed-up technologies supported by Core i7-640M and Pentium D 955 are enumerated here.

VT-d	+	no data
VT-x	+	no data
EPT	+	no data

Memory specs

Types, maximum amount and channel quantity of RAM supported by Core i7-640M and Pentium D 955. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3	DDR1, DDR2, DDR3
Maximum memory size	8 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	17.051 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card	Intel® HD Graphics for Previous Generation Intel® Processors	no data
Clear Video	+	no data
Clear Video HD	+	no data
Graphics max frequency	766 MHz	no data

Graphics interfaces

Available interfaces and connections of Core i7-640M and Pentium D 955 integrated GPUs.

Number of displays supported

2

no data

Peripherals

Specifications and connection of peripherals supported by Core i7-640M and Pentium D 955.

PCIe version	2.0	no data
PCI Express lanes	16	no data

Pros & cons summary

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Chip lithography	32 nm	65 nm
Power consumption (TDP)	35 Watt	130 Watt

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