AMD Mobile Sempron SI-42 vs Intel Core i7-820QM

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General info

Comparing Core i7-820QM and Mobile Sempron SI-42 processor market type (desktop or notebook), architecture, sales start time and price.

Place in performance ranking2233not rated
Place by popularitynot in top-100not in top-100
Market segmentLaptopLaptop
SeriesIntel Core i7AMD Mobile Sempron
Architecture codenameClarksfield (2009−2010)Sable (2008−2009)
Release date23 September 2009 (14 years old)1 September 2009 (14 years old)
Launch price (MSRP)$546no data
Current price$529 (1x MSRP)$17.37

Technical specs

Core i7-820QM 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 cores4 (Quad-Core)1 (Single-Core)
Threads81
Base clock speed1.73 GHzno data
Boost clock speed3.06 GHz2.1 GHz
Bus support2500 MHz1800 MHz
L1 cache64 KB (per core)128 KB
L2 cache256 KB (per core)512 KB
L3 cache8 MB (shared)no data
Chip lithography45 nm65 nm
Die size296 mm2no data
Maximum core temperature100 °C100 °C
Number of transistors774 millionno data
64 bit support++
Windows 11 compatibility--
Unlocked multiplierNoNo

Compatibility

Information on Core i7-820QM 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 configuration1no data
SocketFCPGA988,PGA988S1g2
Power consumption (TDP)45 Watt25 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core i7-820QM and Mobile Sempron SI-42. You'll probably need this information if you require some particular technology.

Instruction set extensionsIntel® SSE4.265 nm, 1.075 - 1.125
AES-NI-no data
vPro+no data
Enhanced SpeedStep (EIST)+no data
Turbo Boost Technology1.0no data
Hyper-Threading Technology+no data
Idle States+no data
Thermal Monitoring+no data
PAE36 Bitno data
StatusDiscontinuedno data

Security technologies

Core i7-820QM 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 i7-820QM 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 i7-820QM and Mobile Sempron SI-42. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory typesDDR3-1066, DDR3-1333no data
Maximum memory size8 GBno data
Max memory channels2no data
Maximum memory bandwidth21 GB/sno data
ECC memory support-no data

Graphics specifications

General parameters of integrated GPUs, if any.

Integrated graphics cardNoneno data

Peripherals

Specifications and connection of peripherals supported by Core i7-820QM and Mobile Sempron SI-42.

PCIe version2no data
PCI Express lanes16no 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.


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.

Benchmark coverage: 19%

i7-820QM 3149
+300%
Mobile Sempron SI-42 787

Core i7-820QM outperforms Mobile Sempron SI-42 by 300% in 3DMark06 CPU.

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.

Benchmark coverage: 18%

i7-820QM 42.04
+80.8%
Mobile Sempron SI-42 76

Mobile Sempron SI-42 outperforms Core i7-820QM by 81% in wPrime 32.

Advantages and disadvantages


Physical cores 4 1
Threads 8 1
Chip lithography 45 nm 65 nm
Power consumption (TDP) 45 Watt 25 Watt

We couldn't decide between Core i7-820QM and Mobile Sempron SI-42. We've got no test results to judge.


Should you still have questions on choice between Core i7-820QM and Mobile Sempron SI-42, ask them in Comments section, and we shall answer.

User ratings

Do you think we are right or mistaken in our choice? Vote by clicking "Like" button near your favorite CPU.


Intel Core i7-820QM
Core i7-820QM
AMD Mobile Sempron SI-42
Mobile Sempron SI-42

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User ratings: view and submit

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4.2 33 votes

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3.1 14 votes

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Questions and comments

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