Mobile Sempron SI-40 vs Core 2 Duo T9550

Place in the ranking	2380	3216
Place by popularity	not in top-100	not in top-100
Market segment	Laptop	Laptop
Series	Intel Core 2 Duo	AMD Mobile Sempron
Power efficiency	3.08	0.76
Architecture codename	Penryn (2008−2011)	Sable (2008−2009)
Release date	1 January 2009 (15 years ago)	4 July 2008 (16 years ago)
Launch price (MSRP)	$316	no data

Detailed specifications

Core 2 Duo T9550 and Mobile Sempron SI-40 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
Base clock speed	2.66 GHz	no data
Boost clock speed	2.66 GHz	2 GHz
Bus rate	1066 MHz	1800 MHz
L1 cache	128 KB	no data
L2 cache	6 MB	512 KB
L3 cache	6 MB L2 Cache	no data
Chip lithography	45 nm	65 nm
Die size	107 mm²	no data
Maximum core temperature	105 °C	100 °C
Number of transistors	410 Million	no data
64 bit support	+	+
Windows 11 compatibility	-	-
VID voltage range	1.05V-1.212V	no data

Compatibility

Information on Core 2 Duo T9550 and Mobile Sempron SI-40 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	BGA479,PGA478	S1g2
Power consumption (TDP)	35 Watt	25 Watt

Technologies and extensions

Technological solutions and additional instructions supported by Core 2 Duo T9550 and Mobile Sempron SI-40. You'll probably need this information if you require some particular technology.

Instruction set extensions	no data	65 nm, 1.075 - 1.125V
Enhanced SpeedStep (EIST)	+	no data
Turbo Boost Technology	-	no data
Hyper-Threading Technology	-	no data
Demand Based Switching	-	no data
FSB parity	-	no data

Security technologies

Core 2 Duo T9550 and Mobile Sempron SI-40 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 2 Duo T9550 and Mobile Sempron SI-40 are enumerated here.

VT-x

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.

Core 2 Duo T9550 1.14
+470%

Mobile Sempron SI-40 0.20

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.

Core 2 Duo T9550 2385
+209%

Mobile Sempron SI-40 772

Gaming performance

Pros & cons summary

Performance score	1.14	0.20
Recency	1 January 2009	4 July 2008
Physical cores	2	1
Threads	2	1
Chip lithography	45 nm	65 nm
Power consumption (TDP)	35 Watt	25 Watt

Core 2 Duo T9550 has a 470% higher aggregate performance score, an age advantage of 5 months, 100% more physical cores and 100% more threads, and a 44.4% more advanced lithography process.

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

The Core 2 Duo T9550 is our recommended choice as it beats the Mobile Sempron SI-40 in performance tests.

Should you still have questions on choice between Core 2 Duo T9550 and Mobile Sempron SI-40, ask them in Comments section, and we shall answer.