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Intel i5-2540M vs Atom x5-Z8350

The Intel Atom x5-Z8350 @ 1.44GHz is newer than Intel Core i5-2540M @ 2.60GHz however is significantly slower in multi-threaded (CPU Mark) testing. However, it is significantly slower in single-thread testing. Also, Intel Atom x5-Z8350 @ 1.44GHz uses substantially less power. All the CPUs in this comparison belong in the Laptop CPU Class. The values below were tabulated from a combined 3442 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 i5-2540M @ 2.60GHz×Intel Atom x5-Z8350 @ 1.44GHz+ ADD
Price Search Online Search Online
Socket TypeBGA1023UTFCBGA592
CPU ClassLaptopLaptop
Clockspeed2.6 GHz1.4 GHz
Turbo SpeedUp to 3.3 GHzUp to 1.9 GHz
# of Physical Cores2 (Threads: 4)4 (Threads: 4)
CacheL1: 128KB, L2: 0.5MB, L3: 3MBL1: 224KB, L2: 2.0MB, L3: 0MB
TDP35W4W
Yearly Running Cost$6.39$0.73
Other
First Seen on ChartQ4 2010Q2 2016
# of Samples18991543
CPU Value36.242.6
Single Thread Rating(% diff. to max in group)1395(0.0%)471(-66.2%)
CPU Mark(% diff. to max in group)2355(0.0%)894(-62.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 13th of November 2025 - Higher results represent better performance
Intel Core i5-2540M @ 2.60GHz
2,355
Intel Atom x5-Z8350 @ 1.44GHz
894
PassMark Software © 2008-2025
CPU Value (CPU Mark / $Price)
As of 13th of November 2025 - Higher results represent better value
Intel Core i5-2540M @ 2.60GHz
36.2
Intel Atom x5-Z8350 @ 1.44GHz
42.6
PassMark Software © 2008-2025
CPU Single Thread Rating
As of 13th of November 2025 - Higher results represent better performance
Intel Core i5-2540M @ 2.60GHz
1,395
Intel Atom x5-Z8350 @ 1.44GHz
471
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 Core i5-2540M @ 2.60GHz Intel Atom x5-Z8350 @ 1.44GHz
Max TDP35W4W
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.