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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core i7-6660U @ 2.40GHz vs Intel Core i3-8121U @ 2.20GHz

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


×Intel Core i7-6660U @ 2.40GHz×Intel Core i3-8121U @ 2.20GHz+ ADD
Price$4151$2901
Socket TypeFCBGA1356NA2
CPU ClassLaptopLaptop
Clockspeed2.4 GHz2.2 GHz
Turbo SpeedUp to 3.4 GHzUp to 3.2 GHz
# of Physical Cores2 (Threads: 4)2 (Threads: 4)
Max TDP15W15W
Yearly Running Cost$2.74$2.74
OtherIntel Iris Graphics 540
First Seen on ChartQ3 2018Q4 2018
# of Samples1226
Single Thread Rating(% diff. to max in group)1967(0.0%)1930(-1.9%)
CPU Mark(% diff. to max in group)3853(-12.1%)4382(0.0%)
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 16th of August 2022 - Higher results represent better performance
Intel Core i7-6660U @ 2.40GHz
 3,853
Intel Core i3-8121U @ 2.20GHz
 4,382
PassMark Software © 2008-2022
CPU Value (CPU Mark / $Price)
As of 16th of August 2022 - Higher results represent better value
Intel Core i7-6660U @ 2.40GHz
 9.28
Intel Core i3-8121U @ 2.20GHz
 15.11
PassMark Software © 2008-2022
CPU Single Thread Rating
As of 16th of August 2022 - Higher results represent better performance
Intel Core i7-6660U @ 2.40GHz
 1,967
Intel Core i3-8121U @ 2.20GHz
 1,930
PassMark Software © 2008-2022

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 i7-6660U @ 2.40GHzIntel Core i3-8121U @ 2.20GHz
Max TDP15W15W
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.