Mobile Sempron SI-42 vs i7-940XM

Primary details

Comparing Core i7-940XM and Mobile Sempron SI-42 processor market type (desktop or notebook), architecture, sales start time and price.

Place in the ranking	2215	not rated
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core i7	AMD Mobile Sempron
Power efficiency	2.39	no data
Architecture codename	Clarksfield (2009−2010)	Sable (2008−2009)
Release date	20 June 2010 (14 years ago)	1 September 2009 (15 years ago)
Launch price (MSRP)	$1,096	no data

Detailed specifications

Core i7-940XM and Mobile Sempron SI-42 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	4 (Quad-Core)	1 (Single-Core)
Threads	8	1
Base clock speed	2.13 GHz	no data
Boost clock speed	3.33 GHz	2.1 GHz
Bus rate	2500 MHz	1800 MHz
L1 cache	64 KB (per core)	128 KB
L2 cache	256 KB (per core)	512 KB
L3 cache	8 MB (shared)	no data
Chip lithography	45 nm	65 nm
Die size	296 mm2	no data
Maximum core temperature	100 °C	100 °C
Number of transistors	774 million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
Unlocked multiplier	+	-

Compatibility

Information on Core i7-940XM and Mobile Sempron SI-42 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	no data
Socket	FCPGA988,PGA988	S1g2
Power consumption (TDP)	55 Watt	25 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-940XM and Mobile Sempron SI-42. You'll probably need this information if you require some particular technology.

Instruction set extensions	Intel® SSE4.2	65 nm, 1.075 - 1.125
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	+	no data
Hyper-Threading Technology	+	no data
Idle States	+	no data
Thermal Monitoring	+	-
Demand Based Switching	-	no data
PAE	36 Bit	no data

Security technologies

Core i7-940XM and Mobile Sempron SI-42 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 i7-940XM and Mobile Sempron SI-42 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 i7-940XM and Mobile Sempron SI-42. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types	DDR3-1066, DDR3-1333	no data
Maximum memory size	8 GB	no data
Max memory channels	2	no data
Maximum memory bandwidth	21 GB/s	no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics card

None

no data

Peripherals

Specifications and connection of peripherals supported by Core i7-940XM and Mobile Sempron SI-42.

PCIe version	2	no data
PCI Express lanes	16	no data

Synthetic benchmark performance

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

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Pros & cons summary

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Recency	20 June 2010	1 September 2009
Physical cores	4	1
Threads	8	1
Chip lithography	45 nm	65 nm
Power consumption (TDP)	55 Watt	25 Watt

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Should you still have questions on choice between Core i7-940XM and Mobile Sempron SI-42, ask them in Comments section, and we shall answer.

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