PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.

Overview

The Mobile Sempron SI-42 is manufactured by AMD. It was released in 1 September 2009 (16 years ago). It is based on the Sable (2008−2009) architecture. It features 1 cores and 1 threads. Max frequency: 2.1 GHz. L2 cache: 512 kB. Built on 65 nm process technology. Socket: S1g2. Thermal design power (TDP): 512 kB. Passmark benchmark score: 332 points. Launch price was $69.

Value Upgrade Path

This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. The Mobile Sempron SI-42 is positioned at rank #1175 in our cost-efficiency ranking, representing a Lower cost-benefit for your build. Components placed above yours deliver better value for money.

MSRP is the manufacturer's suggested retail price.•
Avg price is the current average price collected from markets across the web.

Performance Per Dollar Mobile Sempron SI-42

#1163

Atom x5-Z8300

MSRP: $20|Avg: N/A

4419%

#1164

Atom Z3735G

MSRP: $17|Avg: N/A

4354%

#1165

Core i5-480M

MSRP: $81|Avg: $77

3997%

#1166

Core i5-460M

MSRP: $80|Avg: $129

3979%

#1167

Core i5-2540M

MSRP: $266|Avg: $10

3942%

#1169

Core i5-450M

MSRP: $32|Avg: $31

3807%

#1170

Core i3-380M

MSRP: $49|Avg: $25

3651%

#1171

Core i5-430M

MSRP: N/A|Avg: $33

3645%

#1172

Core 2 Duo T6600

MSRP: N/A|Avg: $4

3547%

#1175

Mobile Sempron SI-42

MSRP: N/A|Avg: N/A

100%

#1176

Core i7-2637M

MSRP: $289|Avg: N/A

98%

#1177

Athlon PRO 3045B

MSRP: $426|Avg: $180

98%

#1178

Core 2 Duo SL9600

MSRP: $316|Avg: N/A

98%

#1179

Core 2 Duo T5600

MSRP: $241|Avg: N/A

97%

#1180

Pentium N3510

MSRP: $161|Avg: $161

97%

#1181

Core i7-7Y75

MSRP: $393|Avg: $285

97%

#1183

Core i7-4500U

MSRP: $398|Avg: N/A

94%

#1185

Athlon Neo X2 L325

MSRP: $100|Avg: $5

93%

#1186

Core i3-2370M

MSRP: $225|Avg: N/A

92%

#1187

Core i3-3217UE

MSRP: $225|Avg: $35

91%

#1188

Celeron T3000

MSRP: $150|Avg: $54

91%

#1189

Core m7-6Y75

MSRP: $393|Avg: $393

91%

#1190

Core M-5Y10

MSRP: $281|Avg: $20

88%

Based on actual market prices and performance synthetic scores.

Technical Analysis

Detailed breakdown of Mobile Sempron SI-42 specifications and capabilities.

⚡

Processing Power

The Mobile Sempron SI-42 is a 1-core / 1-thread processor based on the Sable (2008−2009) architecture, manufactured on a 65 nm process node. It reaches a maximum boost clock of 2.1 GHz— higher boost clocks directly translate to better single-threaded performance and responsiveness in gaming. In the PassMark benchmark (a comprehensive multi-threaded test), it scores 332, placing it in the Entry Level performance tier as a Legacy generation product.

Specification	Mobile Sempron SI-42
Cores / ThreadsPhysical/logical processing units	1C / 1T
Max Boost ClockPeak single-core speed under boost	2.1 GHz
ArchitectureCPU microarchitecture design	Sable (2008−2009)
Process NodeFabrication technology — smaller = more efficient	65 nm
L2 CachePer-core fast cache for frequently accessed data	512 kB
L1 CacheUltra-fast per-core cache	128 kB
Bus SpeedData bus frequency	1800 MHz
Max TemperatureMaximum safe operating temperature (Tjmax)	100 °C
64-bit Support	Yes
Windows 11 Compatible	No
PassMark ScoreOverall multi-threaded benchmark score	332

🧠

Memory & Platform

The Mobile Sempron SI-42 fits into the S1g2 socket and supports PCIe 2.0.

Specification	Mobile Sempron SI-42
TypeDesktop or Laptop processor	Laptop
SeriesProduct family	AMD Mobile Sempron
SocketMotherboard socket required	S1g2
PCIe GenerationPeripheral interconnect speed — affects GPU and SSD bandwidth	PCIe 2.0

🌡️

Power & Cooling

The Mobile Sempron SI-42 has a rated TDP (Thermal Design Power) of 512 kB — this indicates the amount of heat generated under sustained load and determines what cooling solution is needed.

Specification	Mobile Sempron SI-42
TDPThermal Design Power — heat output under sustained workload	512 kB
Max TemperatureMaximum safe junction temperature (Tjmax)	100 °C

💰

Value Analysis

It currently holds Rank #1175 in the overall cost-benefit ranking — this ranking factors in performance-per-dollar relative to all available processors. Performance ranking position: #3497 out of all indexed processors.

Specification	Mobile Sempron SI-42
Launch PriceOriginal retail price at launch	$69
Cost-Benefit RankPosition in overall value ranking	#1175
Performance RankPosition in overall performance ranking	#3497
Release DateLaunch date	1 September 2009 (16 years ago)
Release Year	2009
DesignerArchitecture designer (e.g. Intel, AMD)	AMD