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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core i7-840QM @ 1.87GHz vs Intel Core i5-520M @ 2.40GHz

The values for the CPUs below are determined from thousands of PerformanceTest benchmark results and are updated daily.


×Intel Core i7-840QM @ 1.87GHz×Intel Core i5-520M @ 2.40GHz+ ADD
Price$289.971$40.51
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Socket TypePGA988ABGA1288
CPU ClassLaptopLaptop
Clockspeed1.9 GHz2.9 GHz
Turbo SpeedUp to 3.2 GHzUp to 2.9 GHz
# of Physical Cores4 (Threads: 8)2 (Threads: 4)
Max TDP45W35W
Yearly Running Cost$8.21$6.39
First Seen on ChartQ2 2010Q1 2010
# of Samples2172755
Cross-Platform Rating63053611
Single Thread Rating10961095
CPU Mark18871706
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 25th of January 2021 - Higher results represent better performance
Intel Core i7-840QM @ 1.87GHz
 1,887
Intel Core i5-520M @ 2.40GHz
 1,706
PassMark Software © 2008-2021
CPU Value (CPU Mark / $Price)
As of 25th of January 2021 - Higher results represent better value
Intel Core i7-840QM @ 1.87GHz
 6.51
Intel Core i5-520M @ 2.40GHz
 42.11
PassMark Software © 2008-2021
CPU Single Thread Rating
As of 25th of January 2021 - Higher results represent better performance
Intel Core i7-840QM @ 1.87GHz
 1,096
Intel Core i5-520M @ 2.40GHz
 1,095
PassMark Software © 2008-2021

Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per dayAverage CPU Utilization (0-100%)1Power cost, $ per kWh2
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 i7-840QM @ 1.87GHzIntel Core i5-520M @ 2.40GHz
Max TDP45W35W
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Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.