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Intel Atom Z3745 vs Celeron B800

The Intel Atom Z3745 @ 1.33GHz is newer than Intel Celeron B800 @ 1.50GHz, while Intel Celeron B800 @ 1.50GHz is around 7% faster in multi-threaded (CPU Mark) testing, it is around 32% faster in single-thread testing. However, Intel Atom Z3745 @ 1.33GHz uses substantially less power. All the CPUs in this comparison belong in the Laptop CPU Class.The values below were tabulated from a combined 400 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 Atom Z3745 @ 1.33GHz×Intel Celeron B800 @ 1.50GHz+ ADD
Price Search Online Search Online
Socket TypeUTFCBGA1380PGA988B
CPU ClassLaptopLaptop
Clockspeed1.3 GHz1.5 GHz
Turbo SpeedUp to 1.9 GHzNot Supported
# of Physical Cores4 (Threads: 4)2 (Threads: 2)
CacheL1: 448KB, L2: 2.0MB, L3: 0MBL1: 128KB, L2: 0.5MB, L3: 2MB
TDP4W35W
Yearly Running Cost$0.73$6.39
OtherIntel HD Graphics for Intel Atom Processor Z3700 Series
First Seen on ChartQ1 2014Q3 2011
# of Samples98302
CPU Value20.724.7
Single Thread Rating(% diff. to max in group)435(-32.2%)642(0.0%)
CPU Mark(% diff. to max in group)621(-6.6%)666(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 1st of April 2025 - Higher results represent better performance
Intel Atom Z3745 @ 1.33GHz
621
Intel Celeron B800 @ 1.50GHz
666
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 1st of April 2025 - Higher results represent better value
Intel Atom Z3745 @ 1.33GHz
20.7
Intel Celeron B800 @ 1.50GHz
24.7
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 1st of April 2025 - Higher results represent better performance
Intel Atom Z3745 @ 1.33GHz
435
Intel Celeron B800 @ 1.50GHz
642
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 Atom Z3745 @ 1.33GHz Intel Celeron B800 @ 1.50GHz
Max TDP4W35W
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.