i7-620LM vs i7-640M

Place in the ranking	2263	2542
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i7	Intel Core i7
Power efficiency	3.52	3.37
Architecture codename	Arrandale (2010−2011)	Arrandale (2010−2011)
Release date	1 September 2010 (14 years ago)	7 January 2010 (14 years ago)
Launch price (MSRP)	$346	$300

Detailed specifications

Core i7-640M and Core i7-620LM 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 GHz
Boost clock speed	3.46 GHz	2.8 GHz
Bus type	DMI 1.0	DMI 1.0
Bus rate	1 × 2.5 GT/s	1 × 2.5 GT/s
Multiplier	21	15
L1 cache	64K (per core)	64 KB (per core)
L2 cache	256K (per core)	256 KB (per core)
L3 cache	4 MB (shared)	4 MB (shared)
Chip lithography	32 nm	32 nm
Die size	81+114 mm²	81+144 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 i7-620LM 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 i7-620LM. 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 i7-620LM 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 i7-620LM 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 i7-620LM. 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 i7-620LM integrated GPUs.

Number of displays supported

Peripherals

Specifications and connection of peripherals supported by Core i7-640M and Core i7-620LM.

PCIe version	2.0	2.0
PCI Express lanes	16	16

Synthetic benchmark performance

Various benchmark results of the processors in comparison. Overall score is measured in points in 0-100 range, higher is better.

Combined synthetic benchmark score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

i7-640M 1.30
+46.1%

i7-620LM 0.89

Passmark

Passmark CPU Mark is a widespread benchmark, consisting of 8 different types of workload, including integer and floating point math, extended instructions, compression, encryption and physics calculation. There is also one separate single-threaded scenario measuring single-core performance.

i7-640M 2070
+47.2%

i7-620LM 1406

GeekBench 5 Single-Core

GeekBench 5 Single-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses only a single CPU core.

i7-640M 425
+4.7%

i7-620LM 406

GeekBench 5 Multi-Core

GeekBench 5 Multi-Core is a cross-platform application developed in the form of CPU tests that independently recreate certain real-world tasks with which to accurately measure performance. This version uses all available CPU cores.

i7-640M 805
+5.6%

i7-620LM 762

Cinebench 10 32-bit single-core

Cinebench R10 is an ancient ray tracing benchmark for processors by Maxon, authors of Cinema 4D. Its single core version uses just one CPU thread to render a futuristic looking motorcycle.

i7-640M 3708
+26.2%

i7-620LM 2937

Cinebench 10 32-bit multi-core

Cinebench Release 10 Multi Core is a variant of Cinebench R10 using all the processor threads. Possible number of threads is limited by 16 in this version.

i7-640M 7906
+40.2%

i7-620LM 5640

3DMark06 CPU

3DMark06 is a discontinued DirectX 9 benchmark suite from Futuremark. Its CPU part contains two scenarios, one dedicated to artificial intelligence pathfinding, another to game physics using PhysX package.

i7-640M 3307
+40.2%

i7-620LM 2358

wPrime 32

wPrime 32M is a math multi-thread processor test, which calculates square roots of first 32 million integer numbers. Its result is measured in seconds, so that the less is benchmark result, the faster the processor.

i7-640M 17.62
+50.5%

i7-620LM 26.52