Mobile Sempron SI-42 vs Athlon II M300

Place in the ranking	2984	3219
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	AMD Athlon II	AMD Mobile Sempron
Power efficiency	1.14	0.80
Architecture codename	Caspian (2009)	Sable (2008−2009)
Release date	10 September 2009 (15 years ago)	1 September 2009 (15 years ago)

Detailed specifications

Athlon II M300 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	2 (Dual-core)	1 (Single-Core)
Threads	2	1
Boost clock speed	2 GHz	2.1 GHz
Bus rate	3200 MHz	1800 MHz
L1 cache	128 KB	128 KB
L2 cache	1 MB	512 KB
Chip lithography	45 nm	65 nm
Maximum core temperature	no data	100 °C
64 bit support	+	+
Windows 11 compatibility	-	-

Compatibility

Information on Athlon II M300 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.

Socket	Socket S1 (S1g3)	S1g2
Power consumption (TDP)	35 Watt	25 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Athlon II M300 and Mobile Sempron SI-42. You'll probably need this information if you require some particular technology.

Instruction set extensions	MMX, SSE, SSE2, SSE3, Enhanced 3DNow!, NX bit, AMD64, PowerNow!, AMD Virtualization	65 nm, 1.075 - 1.125
PowerNow	+	-

Memory specs

Types, maximum amount and channel quantity of RAM supported by Athlon II M300 and Mobile Sempron SI-42. Depending on the motherboard, higher memory frequencies may be supported.

Supported memory types

DDR2

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.

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.

Athlon II M300 0.42
+100%

Mobile Sempron SI-42 0.21

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.

Athlon II M300 1552
+97.1%

Mobile Sempron SI-42 787

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.

Athlon II M300 39.24
+93.7%

Mobile Sempron SI-42 76

Gaming performance

Pros & cons summary

Performance score	0.42	0.21
Physical cores	2	1
Threads	2	1
Chip lithography	45 nm	65 nm
Power consumption (TDP)	35 Watt	25 Watt

Athlon II M300 has a 100% higher aggregate performance score, 100% more physical cores and 100% more threads, and a 44.4% more advanced lithography process.

Mobile Sempron SI-42, on the other hand, has 40% lower power consumption.

The Athlon II M300 is our recommended choice as it beats the Mobile Sempron SI-42 in performance tests.

Should you still have questions on choice between Athlon II M300 and Mobile Sempron SI-42, ask them in Comments section, and we shall answer.