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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core i7-840QM @ 1.87GHz vs Intel Core i7-640M @ 2.80GHz

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 i7-640M @ 2.80GHz+ ADD
Price$289.971$186.69
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Socket TypePGA988ABGA1288
CPU ClassLaptopLaptop
Clockspeed1.9 GHz3.5 GHz
Turbo SpeedUp to 3.2 GHzUp to 3.5 GHz
# of Physical Cores4 (Threads: 8)2 (Threads: 4)
Max TDP45W35W
Yearly Running Cost$8.21$6.39
First Seen on ChartQ2 2010Q4 2010
# of Samples210606
Cross-Platform Rating59764426
Single Thread Rating9741435
CPU Mark18512091
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 31st of May 2020 - Higher results represent better performance
Intel Core i7-840QM @ 1.87GHz
1,851
Intel Core i7-640M @ 2.80GHz
2,091
CPU Value (CPU Mark / $Price)
As of 31st of May 2020 - Higher results represent better value
Intel Core i7-840QM @ 1.87GHz
6.38
Intel Core i7-640M @ 2.80GHz
11.20
CPU Single Thread Rating
As of 31st of May 2020 - Higher results represent better performance
Intel Core i7-840QM @ 1.87GHz
974
Intel Core i7-640M @ 2.80GHz
1,435

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 i7-640M @ 2.80GHz
Max TDP45W35W
Power consumption per day (kWh)abcabc
Running cost per dayabcabc
Power consumption per year (kWh)abcabc
Running cost per yearabcabc
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.