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Intel Pentium III Mobile 866MHz vs Mobile Celeron 1.80GHz

The Mobile Intel Celeron 1.80GHz is newer than Intel Pentium III Mobile 866MHz also around 18% faster in multi-threaded (CPU Mark) testing and is significantly faster in single-thread testing. All the CPUs in this comparison belong in the Laptop CPU Class.The values below were tabulated from a combined 4 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 Pentium III Mobile 866MHz×Mobile Intel Celeron 1.80GHz+ ADD
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Socket TypeNA2 PPGA478
CPU ClassLaptopLaptop
Clockspeed0.9 GHz1.8 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores1 (Threads: 1)1 (Threads: 1)
CacheL1: 2KB, L2: 0.0MB, L3: 0MBL1: 2KB, L2: 0.0MB, L3: 0MB
TDPNA266.1W
Yearly Running CostNA$12.05
Other
First Seen on ChartQ2 2009Q3 2009
# of Samples22
CPU Value9.90.0
Single Thread Rating(% diff. to max in group)1323(-53.1%)2803(0.0%)
CPU Mark(% diff. to max in group)99(-18.3%)121(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.
2 - Information not available. Do you know? Notify Us.
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 20th of February 2025 - Higher results represent better performance
Intel Pentium III Mobile 866MHz
99
Mobile Intel Celeron 1.80GHz
121
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 20th of February 2025 - Higher results represent better value
Intel Pentium III Mobile 866MHz
9.9
Mobile Intel Celeron 1.80GHz
NA
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 20th of February 2025 - Higher results represent better performance
Intel Pentium III Mobile 866MHz
132
Mobile Intel Celeron 1.80GHz
280
PassMark Software © 2008-2025
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 Pentium III Mobile 866MHz Mobile Intel Celeron 1.80GHz
Max TDPNA66.1W
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.