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Intel Duo U2400 vs AMD Sempron SI-42

The AMD Sempron SI-42 is newer than Intel Core Duo U2400 @ 1.06GHz is significantly faster in single-thread testing. Also, Intel Core Duo U2400 @ 1.06GHz uses substantially less power. All the CPUs in this comparison belong in the Laptop CPU Class. The values below were tabulated from a combined 132 benchmarks submitted from our PerformanceTest software and results and are updated daily to include new submissions.

  • The first section will show basic information for each CPU selected.
  • The additional graphs shows the CPU Mark and Single Thread values of each CPU selected.
  • An accompany graph, if price data is available, will shows the value for money, in terms of the CPU Mark/Thread Rating per dollar.
  • The last section will show approximate yearly running costs for the CPUs.

×Intel Core Duo U2400 @ 1.06GHz×AMD Sempron SI-42+ ADD
Price Search Online Search Online
Socket TypeBGA479S1
CPU ClassLaptopLaptop
Clockspeed1.1 GHz2.1 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores2 (Threads: 2)1 (Threads: 1)
CacheL1: 128KB, L2: 2.0MB, L3: 0MBL1: 128KB, L2: 0.5MB,
TDP9W25W
Yearly Running Cost$1.64$4.56
Other
First Seen on ChartQ1 2009Q1 2009
# of Samples6126
CPU Rank54615480
CPU Value0.08.2
Single Thread Rating(% diff. to max in group)3423(-46.3%)6373(0.0%)
CPU Mark(% diff. to max in group)255(0.0%)245(-3.9%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.
3 - Single thread rating may be higher than the overall rating, thread performance is just one component of the CPU Mark.

CPU Mark Rating
As of 10th of February 2026 - Higher results represent better performance
Intel Core Duo U2400 @ 1.06GHz
255
AMD Sempron SI-42
245
PassMark Software © 2008-2026
CPU Value (CPU Mark / $Price)
As of 10th of February 2026 - Higher results represent better value
Intel Core Duo U2400 @ 1.06GHz
NA
AMD Sempron SI-42
8.2
PassMark Software © 2008-2026
CPU Single Thread Rating
As of 10th of February 2026 - Higher results represent better performance
Intel Core Duo U2400 @ 1.06GHz
342
AMD Sempron SI-42
637
PassMark Software © 2008-2026
Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per day Average CPU Utilization (0-100%)1 Power cost, $ per kWh2
8
25
1Average user usage is typically low and can vary from task to task. An estimate load 25% is nominal.
2Typical power costs vary around the world. Check your last power bill for details. Values of $0.15 to $0.45 per kWh are typical.
Intel Core Duo U2400 @ 1.06GHz AMD Sempron SI-42
Max TDP9W25W
Power consumption per day (kWh)NANA
Running cost per dayNANA
Power consumption per year (kWh)NANA
Running cost per yearNANA
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.