AMD Mobile Sempron SI-42: specs and benchmarks

Price now 17.37$
Games supported 82%
AMD Mobile Sempron SI-42
AMD Mobile Sempron SI-42
  • Interface
  • Core clock speed
  • Max video memory
  • Memory type
  • Memory clock speed
  • Maximum resolution
Year of release 2009
Performance 4.64
Processor Technical data and tests
AMD Mobile Sempron SI-42
AMD Mobile Sempron SI-42 AMD Mobile Sempron SI-42


AMD started AMD Mobile Sempron SI-42 sales 1 September 2009. This is Sable architecture notebook processor primarily aimed at office systems. It has 1 core and 1 thread, and is based on 65 nm manufacturing technology, with a maximum frequency of 2100 MHz and a locked multiplier.

Compatibility-wise, this is S1g2 processor with a TDP of 25 Watt and a maximum temperature of °C.

It provides poor benchmark performance at


percent of a leader's which is AMD EPYC 7763.

General info

Of Mobile Sempron SI-42 processor market type (desktop or notebook), architecture, sales start time and pricing.

Place in performance rating1148
Value for money (0-100)15.68
Market segmentLaptop
SeriesAMD Mobile Sempron
Architecture codenameSable
Release date1 September 2009 (12 years ago)
Price now$17.37 of 16595 (Xeon E7-4850)
Value for money (0-100)

To get the index we compare the characteristics of the processors and their cost, taking into account the cost of other processors.

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Technical specs

Basic microprocessor parameters such as number of cores, number of threads, base frequency and turbo boost clock, lithography, cache size and multiplier lock state. These parameters can generally indicate CPU performance, but to be more precise you have to review its test results.

Physical cores1 (Single-Core)
Boost clock speed2.1 GHzof 5.3 (Core i9-10900KF)
Bus support1800 MHz
L1 cache128 KBof 896 (Atom C3950)
L2 cache512 KBof 12288 (Core 2 Quad Q9550)
Chip lithography65 nmof 5 (Apple M1)
Maximum core temperature100 °Cof 110 (Atom x7-E3950)
64 bit support+


Information on Mobile Sempron SI-42 compatibility with other computer components and devices: 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.

Thermal design power (TDP)25 Wattof 400 (Xeon Platinum 9282)

Technologies and extensions

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

Instruction set extensions65 nm1.075 - 1.125

Benchmark performance

Single-core and multi-core benchmark results of Mobile Sempron SI-42. Overall benchmark performance is measured in points in 0-100 range, higher is better.

Overall 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.

Mobile Sempron SI-42 4.64
  • 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.

Mobile Sempron SI-42 787

Game benchmarks

Let's see how good Mobile Sempron SI-42 is for a gaming PC, compared with system requirements of some popular titles. Remember that sometimes official hardware requirements may reflect real performance inaccurately.

Relative perfomance

Overall Mobile Sempron SI-42 performance compared to nearest competitors among notebook CPUs.

Intel equivalent

We believe that the nearest equivalent to Mobile Sempron SI-42 from Intel is Core i7-2720QM, which is nearly equal in speed and lower by 2 positions in our rating.

Intel Core i7-2720QM Core i7 2720QM

Similar processors

Intel Core i7-2720QM Core i7 2720QM
AMD Mobile Sempron SI-40 Mobile Sempron SI-40
Intel Core i7-2670QM Core i7 2670QM
Intel Celeron M U3400 Celeron M U3400
Intel Celeron Dual-Core T1400 Celeron Dual Core T1400
AMD Athlon 64 TF-20 Athlon 64 TF-20

User rating

Here is the rating given to the reviewed processor by our users. Let others know your opinion by rating it yourself.

Advices and comments

Here you can ask a question about Mobile Sempron SI-42, agree or disagree with our judgements, or report an error or mismatch.