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Intel Atom Z520 vs Celeron M 420

The Intel Atom Z520 @ 1.33GHz is newer than Intel Celeron M 420 @ 1.60GHz, while Intel Celeron M 420 @ 1.60GHz is around 12% faster in multi-threaded (CPU Mark) testing and is significantly faster in single-thread testing. However, Intel Atom Z520 @ 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 56 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 Z520 @ 1.33GHz×Intel Celeron M 420 @ 1.60GHz+ ADD
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Socket TypeBGA441PPGA478
CPU ClassLaptopLaptop
Clockspeed1.3 GHz1.6 GHz
Turbo SpeedNot SupportedNot Supported
# of Physical Cores1 (Threads: 2)1 (Threads: 1)
CacheL3: 0MBL1: 64KB, L2: 1.0MB, L3: 0MB
TDP2W27W
Yearly Running Cost$0.37$4.93
Other
First Seen on ChartQ2 2009Q1 2009
# of Samples2234
CPU Value0.00.0
Single Thread Rating(% diff. to max in group)1513(-61.5%)3913(0.0%)
CPU Mark(% diff. to max in group)122(-11.8%)139(0.0%)
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 24th of November 2024 - Higher results represent better performance
Intel Atom Z520 @ 1.33GHz
122
Intel Celeron M 420 @ 1.60GHz
139
PassMark Software © 2008-2024
CPU Single Thread Rating
As of 24th of November 2024 - Higher results represent better performance
Intel Atom Z520 @ 1.33GHz
151
Intel Celeron M 420 @ 1.60GHz
391
PassMark Software © 2008-2024
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 Z520 @ 1.33GHz Intel Celeron M 420 @ 1.60GHz
Max TDP2W27W
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.